Pub Date : 2023-03-06DOI: 10.1080/03115518.2023.2175034
K. Travouillon
Abstract The first fossil record of the Liverpool Plains striped bandicoot, Perameles fasciata, is presented. Since this species was split from its west coast counterpart, Perameles bougainville, no fossil record had been reported. Perameles fasciata is found in five fossil sites in Queensland and New South Wales, all Pleistocene in age. Perameles sobbei, described from the Darling Downs in Queensland, is found to be a junior synonym of P. fasciata, based on morphometrics and diagnostic morphological features. A morphological phylogeny finds that P. fasciata is more closely related to Perameles nasuta, Perameles pallescens and Perameles gunnii than P. bougainville. Perameles fasciata was likely more widespread in the Pleistocene, but by the Holocene had only survived on the Liverpool Plains in New South Wales until its extinction in the 1860s, probably as a result of land clearing and the introduction of foxes. While P. bougainville has been translocated in New South Wales, P. gunnii, which co-occurred with P. fasciata, is a better ecological analogue because of it is similar size, morphology and phylogenetic affinity. Kenny J. Travouillon [ Kenny.Travouillon@museum.wa.gov.au ], Collections and Research Centre, Western Australian Museum, 49 Kew Street, Welshpool, WA 6106, Australia.
{"title":"First fossil record of Perameles fasciata from New South Wales and Queensland: reassessment of Perameles sobbei","authors":"K. Travouillon","doi":"10.1080/03115518.2023.2175034","DOIUrl":"https://doi.org/10.1080/03115518.2023.2175034","url":null,"abstract":"Abstract The first fossil record of the Liverpool Plains striped bandicoot, Perameles fasciata, is presented. Since this species was split from its west coast counterpart, Perameles bougainville, no fossil record had been reported. Perameles fasciata is found in five fossil sites in Queensland and New South Wales, all Pleistocene in age. Perameles sobbei, described from the Darling Downs in Queensland, is found to be a junior synonym of P. fasciata, based on morphometrics and diagnostic morphological features. A morphological phylogeny finds that P. fasciata is more closely related to Perameles nasuta, Perameles pallescens and Perameles gunnii than P. bougainville. Perameles fasciata was likely more widespread in the Pleistocene, but by the Holocene had only survived on the Liverpool Plains in New South Wales until its extinction in the 1860s, probably as a result of land clearing and the introduction of foxes. While P. bougainville has been translocated in New South Wales, P. gunnii, which co-occurred with P. fasciata, is a better ecological analogue because of it is similar size, morphology and phylogenetic affinity. Kenny J. Travouillon [ Kenny.Travouillon@museum.wa.gov.au ], Collections and Research Centre, Western Australian Museum, 49 Kew Street, Welshpool, WA 6106, Australia.","PeriodicalId":272731,"journal":{"name":"Alcheringa: An Australasian Journal of Palaeontology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124564042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-29DOI: 10.1080/03115518.2022.2153268
N. Giannini, F. Abdala, David A. Flores, L. A. Wilson
Abstract Ontogenetic allometry, the covariation of shape with size over the course of development, represents a fundamental component of morphological diversification that can vary across species and in association with ecological factors. Ontogenetic allometry patterns for the skull have been described for species from several marsupial lineages, associated with common dietary niches, e.g., carnivory. We here conduct a novel detailed examination of cranial ontogeny in the numbat (Myrmecobius fasciatus), unique among marsupials in being myrmecophagous and adopting a strictly diurnal habit. We investigated ontogenetic allometry using multivariate analyses in a postnatal series (n = 28) of complete numbat skulls to estimate the rate of growth of its major constituent elements, described by 15 measurements. We find positive allometry for length of the nasals and palate, which relates directly to the remarkable rostral elongation in the species relative to other marsupials, in addition to several other ontogenetic changes. These comprise negative allometry of palate breadth, elongation of upper and lower toothrows that produces diastemata between weakly developed teeth, and decreasing muzzle height, all of which contribute to the development of a long, tapering, narrow rostrum, with limited mastication ability, as seen in the small temporal space and poor development of crests and processes associated with jaw musculature. Our specific allometric results and comparisons, together with qualitative observations, reveal a distinct imprint of myrmecophagy on skull ontogeny in the numbat and help explain the development and evolution of specialized feeding function of this species. Norberto P. Giannini [ngiannini@amnh.org ], CONICET Fundacion Miguel Lillo, Unidad Ejecutora Lillo, UEL, Tucumán, Argentina, Facultad de Ciencias Naturales, Instituto Miguel Lillo, Universidad Nacional de Tucumán, Tucumán, Argentina, Department of Mammalogy, American Museum of Natural History, New York, NY, USA; Fernando Abdala [nestor.abdala@wits.ac.za ], CONICET Fundacion Miguel Lillo, Unidad Ejecutora Lillo, UEL, Tucumán, Argentina, Evolutionary Studies Institute, University of the Witwatersrand, Johannesburg, South Africa; David A. Flores [dflores@macn.gov.ar ], CONICET Fundacion Miguel Lillo, Unidad Ejecutora Lillo, UEL, Tucumán, Argentina, Instituto de Vertebrados, Fundación Miguel Lillo, Tucumán, Argentina; Laura A. B. Wilson [laura.wilson@anu.edu.au], School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia, School of Archaeology and Anthropology, The Australian National University, Canberra, ACT 2601, Australia.
{"title":"Ontogenetic allometry reveals the imprint of myrmecophagy in the skull of the numbat, Myrmecobius fasciatus Waterhouse, 1836 (Marsupialia: Myrmecobiidae)","authors":"N. Giannini, F. Abdala, David A. Flores, L. A. Wilson","doi":"10.1080/03115518.2022.2153268","DOIUrl":"https://doi.org/10.1080/03115518.2022.2153268","url":null,"abstract":"Abstract Ontogenetic allometry, the covariation of shape with size over the course of development, represents a fundamental component of morphological diversification that can vary across species and in association with ecological factors. Ontogenetic allometry patterns for the skull have been described for species from several marsupial lineages, associated with common dietary niches, e.g., carnivory. We here conduct a novel detailed examination of cranial ontogeny in the numbat (Myrmecobius fasciatus), unique among marsupials in being myrmecophagous and adopting a strictly diurnal habit. We investigated ontogenetic allometry using multivariate analyses in a postnatal series (n = 28) of complete numbat skulls to estimate the rate of growth of its major constituent elements, described by 15 measurements. We find positive allometry for length of the nasals and palate, which relates directly to the remarkable rostral elongation in the species relative to other marsupials, in addition to several other ontogenetic changes. These comprise negative allometry of palate breadth, elongation of upper and lower toothrows that produces diastemata between weakly developed teeth, and decreasing muzzle height, all of which contribute to the development of a long, tapering, narrow rostrum, with limited mastication ability, as seen in the small temporal space and poor development of crests and processes associated with jaw musculature. Our specific allometric results and comparisons, together with qualitative observations, reveal a distinct imprint of myrmecophagy on skull ontogeny in the numbat and help explain the development and evolution of specialized feeding function of this species. Norberto P. Giannini [ngiannini@amnh.org ], CONICET Fundacion Miguel Lillo, Unidad Ejecutora Lillo, UEL, Tucumán, Argentina, Facultad de Ciencias Naturales, Instituto Miguel Lillo, Universidad Nacional de Tucumán, Tucumán, Argentina, Department of Mammalogy, American Museum of Natural History, New York, NY, USA; Fernando Abdala [nestor.abdala@wits.ac.za ], CONICET Fundacion Miguel Lillo, Unidad Ejecutora Lillo, UEL, Tucumán, Argentina, Evolutionary Studies Institute, University of the Witwatersrand, Johannesburg, South Africa; David A. Flores [dflores@macn.gov.ar ], CONICET Fundacion Miguel Lillo, Unidad Ejecutora Lillo, UEL, Tucumán, Argentina, Instituto de Vertebrados, Fundación Miguel Lillo, Tucumán, Argentina; Laura A. B. Wilson [laura.wilson@anu.edu.au], School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia, School of Archaeology and Anthropology, The Australian National University, Canberra, ACT 2601, Australia.","PeriodicalId":272731,"journal":{"name":"Alcheringa: An Australasian Journal of Palaeontology","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114590783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-29DOI: 10.1080/03115518.2022.2157486
Julien Louys, Jonathan Cramb, Kyle J. Ferguson, J. Kemp, R. Wood, J. Miszkiewicz, Nathalia R. Dias Guimarães, Pennilyn Higgins, K. Travouillon, S. Hocknull, G. Webb, G. Price
Abstract Late Pleistocene to Holocene-aged microfaunal assemblages are rarely reported in Australia despite their critical importance for palaeoecological studies, as well as their bearing on the megafaunal extinction debate. Capricorn Caves, central-eastern Queensland, hosts three Late Pleistocene to Holocene deposits containing significant faunal records. Excavations were conducted on these deposits over several seasons, with analyses of recovered material ongoing. Here, we report interim results and explore their implications for our understanding of the microfaunal record of central eastern Queensland. Fern Chamber was previously dated using U-series to the Holocene (>7.6 ± 0.2 ka). Honeymoon Suite was dated to >6.4 ± 0.2 ka using U-series. However, new charcoal dates from the deposit span approximately 7.5–15.5 ka, although the association between charcoal and fauna is unresolved. The fauna is likely Holocene. Colosseum Chamber is the oldest of the deposits, and new single-grain luminescence ages and age-depth modelling suggest that the deposit likely spans MIS 1–4. We use abundant fragmentary rodent remains to examine palaeoenvironmental change over this period. Carbon and oxygen isotope analyses of rodent incisor fragments reveal broad diets within the rodent community, and significant differences in precipitation between glacial and interglacial conditions. Rodent long bone histological analyses indicate significant differences in bone metabolism at the family level between the MIS 3 and 2 samples, but not MIS 1. We suggest that these data support evidence for a mid-Holocene arid anomaly in the region, and increased aridity through the Holocene relative to the terminal Pleistocene. The sites contain at least 10 small mammal species either globally extinct or locally extirpated, including the Capricorn rabbit-rat (Conilurus capricornensis), the white-footed rabbit-rat (Conilurus albipes), the plains mouse (Pseudomys australis), Gould’s mouse (Pseudomys gouldii), Forrest’s mouse (Leggadina forresti), the long-tailed hopping mouse (Notomys longicaudatus), swamp rat (Rattus lutreolus), the white-tailed rat (Uromys caudimaculatus), the narrow-nosed planigale (Planigale tenuirostris), the Liverpool Plains striped bandicoot (Perameles fasciata), the Cape York brown bandicoot (Isoodon peninsulae), and the southern brown bandicoot (Isoodon obesulus). We also record significant range contractions for frogs (Philoria sp., Neobatrachus sp.) and earless dragons (Tympanocryptis sp.). This study demonstrates that significant changes in the microfaunal community of tropical Queensland occurred between the Late Pleistocene and the late Holocene. It also reinforces how poorly recorded native faunas are from the late Holocene through the historical period, to today. Such records underpin and are thus vital for modern biodiversity conservation efforts. Julien Louys [j.louys@griffith.edu.au ], Australian Research Centre for Human Evolution, Griffith Universit
{"title":"Interim report on the vertebrate deposits recovered from the Capricorn Caves, Rockhampton, Queensland","authors":"Julien Louys, Jonathan Cramb, Kyle J. Ferguson, J. Kemp, R. Wood, J. Miszkiewicz, Nathalia R. Dias Guimarães, Pennilyn Higgins, K. Travouillon, S. Hocknull, G. Webb, G. Price","doi":"10.1080/03115518.2022.2157486","DOIUrl":"https://doi.org/10.1080/03115518.2022.2157486","url":null,"abstract":"Abstract Late Pleistocene to Holocene-aged microfaunal assemblages are rarely reported in Australia despite their critical importance for palaeoecological studies, as well as their bearing on the megafaunal extinction debate. Capricorn Caves, central-eastern Queensland, hosts three Late Pleistocene to Holocene deposits containing significant faunal records. Excavations were conducted on these deposits over several seasons, with analyses of recovered material ongoing. Here, we report interim results and explore their implications for our understanding of the microfaunal record of central eastern Queensland. Fern Chamber was previously dated using U-series to the Holocene (>7.6 ± 0.2 ka). Honeymoon Suite was dated to >6.4 ± 0.2 ka using U-series. However, new charcoal dates from the deposit span approximately 7.5–15.5 ka, although the association between charcoal and fauna is unresolved. The fauna is likely Holocene. Colosseum Chamber is the oldest of the deposits, and new single-grain luminescence ages and age-depth modelling suggest that the deposit likely spans MIS 1–4. We use abundant fragmentary rodent remains to examine palaeoenvironmental change over this period. Carbon and oxygen isotope analyses of rodent incisor fragments reveal broad diets within the rodent community, and significant differences in precipitation between glacial and interglacial conditions. Rodent long bone histological analyses indicate significant differences in bone metabolism at the family level between the MIS 3 and 2 samples, but not MIS 1. We suggest that these data support evidence for a mid-Holocene arid anomaly in the region, and increased aridity through the Holocene relative to the terminal Pleistocene. The sites contain at least 10 small mammal species either globally extinct or locally extirpated, including the Capricorn rabbit-rat (Conilurus capricornensis), the white-footed rabbit-rat (Conilurus albipes), the plains mouse (Pseudomys australis), Gould’s mouse (Pseudomys gouldii), Forrest’s mouse (Leggadina forresti), the long-tailed hopping mouse (Notomys longicaudatus), swamp rat (Rattus lutreolus), the white-tailed rat (Uromys caudimaculatus), the narrow-nosed planigale (Planigale tenuirostris), the Liverpool Plains striped bandicoot (Perameles fasciata), the Cape York brown bandicoot (Isoodon peninsulae), and the southern brown bandicoot (Isoodon obesulus). We also record significant range contractions for frogs (Philoria sp., Neobatrachus sp.) and earless dragons (Tympanocryptis sp.). This study demonstrates that significant changes in the microfaunal community of tropical Queensland occurred between the Late Pleistocene and the late Holocene. It also reinforces how poorly recorded native faunas are from the late Holocene through the historical period, to today. Such records underpin and are thus vital for modern biodiversity conservation efforts. Julien Louys [j.louys@griffith.edu.au ], Australian Research Centre for Human Evolution, Griffith Universit","PeriodicalId":272731,"journal":{"name":"Alcheringa: An Australasian Journal of Palaeontology","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132959160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-16DOI: 10.1080/03115518.2022.2152096
A. Gillespie
Abstract Five species of marsupial lions (Thylacoleonidae) have been documented from the Oligo-Miocene freshwater limestone deposits of the Riversleigh World Heritage Area in northwestern Queensland, significantly altering understanding of the evolution of this extinct family. This paper presents a further two new thylacoleonid taxa from this fossil-rich region: Lekaneleo myersi sp. nov., from middle Miocene deposits, and Enigmaleo archeri gen. et sp. nov., from early Miocene deposits. Lekaneleo myersi is described from a dentary, partial maxilla and isolated teeth. It is approximately 10% larger in most linear dental dimensions than its sister taxon L. roskellyae. In this feature, it echoes the morphological cline shown by members of the Wakaleo lineage of marsupial lions, which increase their size through the Miocene. Although the first upper molar of L. myersi exhibits a tall metacone, a feature normally characteristic of species of Wakaleo, other features of its upper and lower molars support its attribution to Lekaneleo. Enigmaleo archeri gen. et sp. nov. is described from an isolated upper third premolar. This species is smaller than those of Lekaneleo, but larger than Microleo attenboroughi, the smallest known thylacoleonid. This premolar exhibits an intriguing combination of features, some of which are seen in Microleo and others in Lekaneleo, and on this basis is attributed to a new genus. It is the fourth thylacoleonid taxon from early Miocene deposits, making this time the most diverse period in thylacoleonid evolution. Phylogenetic analysis of 53 dental and 16 cranial characters recovers Enigmaleo as the sister taxon to Microleo, with this clade forming the sister group to the rest of the thylacoleonid family; however, the relationships among species of Lekaneleo was not resolved in this analysis. Comparisons of the morphology of the upper third premolars of all thylacoleonid taxa indicate that the evolution of the Thylacoleo form is more likely to have been derived from a Microleo or Enigmaleo form, and on this basis it is postulated that one of these groups may have provided the ancestor of the Thylacoleo lineage. Anna Gillespie [a.gillespie@unsw.edu.au], Earth and Sustainability Science Research Centre, School of Biological Earth and Environmental Science. University of New South Wales 2052, Sydney, Australia.
{"title":"Two new marsupial lion taxa (Marsupialia, Thylacoleonidae) from the early and Middle Miocene of Australia","authors":"A. Gillespie","doi":"10.1080/03115518.2022.2152096","DOIUrl":"https://doi.org/10.1080/03115518.2022.2152096","url":null,"abstract":"Abstract Five species of marsupial lions (Thylacoleonidae) have been documented from the Oligo-Miocene freshwater limestone deposits of the Riversleigh World Heritage Area in northwestern Queensland, significantly altering understanding of the evolution of this extinct family. This paper presents a further two new thylacoleonid taxa from this fossil-rich region: Lekaneleo myersi sp. nov., from middle Miocene deposits, and Enigmaleo archeri gen. et sp. nov., from early Miocene deposits. Lekaneleo myersi is described from a dentary, partial maxilla and isolated teeth. It is approximately 10% larger in most linear dental dimensions than its sister taxon L. roskellyae. In this feature, it echoes the morphological cline shown by members of the Wakaleo lineage of marsupial lions, which increase their size through the Miocene. Although the first upper molar of L. myersi exhibits a tall metacone, a feature normally characteristic of species of Wakaleo, other features of its upper and lower molars support its attribution to Lekaneleo. Enigmaleo archeri gen. et sp. nov. is described from an isolated upper third premolar. This species is smaller than those of Lekaneleo, but larger than Microleo attenboroughi, the smallest known thylacoleonid. This premolar exhibits an intriguing combination of features, some of which are seen in Microleo and others in Lekaneleo, and on this basis is attributed to a new genus. It is the fourth thylacoleonid taxon from early Miocene deposits, making this time the most diverse period in thylacoleonid evolution. Phylogenetic analysis of 53 dental and 16 cranial characters recovers Enigmaleo as the sister taxon to Microleo, with this clade forming the sister group to the rest of the thylacoleonid family; however, the relationships among species of Lekaneleo was not resolved in this analysis. Comparisons of the morphology of the upper third premolars of all thylacoleonid taxa indicate that the evolution of the Thylacoleo form is more likely to have been derived from a Microleo or Enigmaleo form, and on this basis it is postulated that one of these groups may have provided the ancestor of the Thylacoleo lineage. Anna Gillespie [a.gillespie@unsw.edu.au], Earth and Sustainability Science Research Centre, School of Biological Earth and Environmental Science. University of New South Wales 2052, Sydney, Australia.","PeriodicalId":272731,"journal":{"name":"Alcheringa: An Australasian Journal of Palaeontology","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114814342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-02DOI: 10.1080/03115518.2023.2185679
R. Bicknell, Patrick M. Smith, J. Kimmig
Abstract Evidence of successful predation or scavenging in the fossil record represents important palaeobiological data to more thoroughly understanding extinct ecosystems. Shelly coprolites are particularly useful indications of durophagous predation in deposits, as they can have a higher preservational potential than their producers. Here we present a new shelly coprolite from the Silurian (Přídolí) Wallace Shale of New South Wales, Australia. This specimen contains abundant fragments of the trilobite Denckmannites rutherfordi Sherwin, 1968 that show limited disarticulation across exoskeletal sections. We propose that a pterygotid eurypterid was the most likely producer of this coprolite, although trilobites and fishes are not completely excluded as possible trace-makers. In documenting this specimen, we highlight that the Wallace Shale likely preserves a more complex palaeoecosystem than previously thought and renewed efforts to understand this deposit are needed in light of this new insight. R.D.C. Bicknell [rdcbicknell@gmail.com], Palaeoscience Research Centre, School of Environmental and Rural Science, University of New England, Armidale, New South Wales, 2351, Australia; P.M. Smith [Patrick.Smith@austmus.gov.au], Palaeontology Department, Australian Museum Research Institute, Sydney, New South Wales, 2010, Australia; Department of Biological Sciences, Macquarie University, Sydney, New South Wales, 2109, Australia; J. Kimmig [julien.kimmig@smnk.de], Abteilung Geowissenschaften, Staatliches Museum für Naturkunde Karlsruhe, Karlsruhe, 76133, Germany.
{"title":"Novel coprolitic records from the Silurian (Přídolí) Wallace Shale of New South Wales","authors":"R. Bicknell, Patrick M. Smith, J. Kimmig","doi":"10.1080/03115518.2023.2185679","DOIUrl":"https://doi.org/10.1080/03115518.2023.2185679","url":null,"abstract":"Abstract Evidence of successful predation or scavenging in the fossil record represents important palaeobiological data to more thoroughly understanding extinct ecosystems. Shelly coprolites are particularly useful indications of durophagous predation in deposits, as they can have a higher preservational potential than their producers. Here we present a new shelly coprolite from the Silurian (Přídolí) Wallace Shale of New South Wales, Australia. This specimen contains abundant fragments of the trilobite Denckmannites rutherfordi Sherwin, 1968 that show limited disarticulation across exoskeletal sections. We propose that a pterygotid eurypterid was the most likely producer of this coprolite, although trilobites and fishes are not completely excluded as possible trace-makers. In documenting this specimen, we highlight that the Wallace Shale likely preserves a more complex palaeoecosystem than previously thought and renewed efforts to understand this deposit are needed in light of this new insight. R.D.C. Bicknell [rdcbicknell@gmail.com], Palaeoscience Research Centre, School of Environmental and Rural Science, University of New England, Armidale, New South Wales, 2351, Australia; P.M. Smith [Patrick.Smith@austmus.gov.au], Palaeontology Department, Australian Museum Research Institute, Sydney, New South Wales, 2010, Australia; Department of Biological Sciences, Macquarie University, Sydney, New South Wales, 2109, Australia; J. Kimmig [julien.kimmig@smnk.de], Abteilung Geowissenschaften, Staatliches Museum für Naturkunde Karlsruhe, Karlsruhe, 76133, Germany.","PeriodicalId":272731,"journal":{"name":"Alcheringa: An Australasian Journal of Palaeontology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125666139","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-02DOI: 10.1080/03115518.2022.2157047
Zhengjiang Luo, Rui Wang, A. Amuti, Yonglin Deng, Yucong Sun, Wenkun Qie, Junjun Song
Abstract Late Carboniferous (Pennsylvanian) ostracods are described from East Junggar in Xinjiang Uygur Autonomous Region (referred here as Xinjiang) of northwestern China. Twenty-one species belonging to 11 genera are recognized. Among them, two are new, Acratia xinjiangensis sp. nov. and Healdianella shiqianensis sp. nov. These species can be referred to the Ostracod Assemblage‐3 (OA-3) of the Shiqiantan Formation, and together with zircon U-P dating suggest a probable Moscovian–Kasimovian (middle–late Pennsylvanian) age for the unit. The OA-3 found in the limestones of the Shiqiantan Formation inhabited in open oceanic island arc context that is ecologically equivalent to the Eifelian Mega-Assemblage, and incorporated smooth-podocopid associations. The Shiqiantan Formation OA-3 thus implies a foreshore to offshore environmental transition within a post-collision rift basin. Zhengjiang Luo [luozj@petrochina.com.cn], Rui Wang [Wangrui@petrochina.com.cn], Aliya Amuti [alya@petrochina.com.cn] and Yong Deng [dengyong@petrochina.com.cn], PetroChina Xinjiang Oilfield Company Research Institute of Experiment and Detection and Joint Laboratory of Stratigraphy and Palaeontology, Xinjiang Oilfield Company, Nanjing Institute of Geology and Palaeontology, CAS, Karamay, Xinjiang 834000, PR China Yucong Sun [18635935938@163.com], Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, PR China; University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China; Wenkun Qie [wkqie@nigpas.ac.cn] and Junjun Song [jjsong@nigpas.ac.cn] State Key Laboratory of Paleobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing 210008, PR China; University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China.
{"title":"Late Carboniferous (Pennsylvanian) ostracods from East Junggar in Xinjiang, northwestern China","authors":"Zhengjiang Luo, Rui Wang, A. Amuti, Yonglin Deng, Yucong Sun, Wenkun Qie, Junjun Song","doi":"10.1080/03115518.2022.2157047","DOIUrl":"https://doi.org/10.1080/03115518.2022.2157047","url":null,"abstract":"Abstract Late Carboniferous (Pennsylvanian) ostracods are described from East Junggar in Xinjiang Uygur Autonomous Region (referred here as Xinjiang) of northwestern China. Twenty-one species belonging to 11 genera are recognized. Among them, two are new, Acratia xinjiangensis sp. nov. and Healdianella shiqianensis sp. nov. These species can be referred to the Ostracod Assemblage‐3 (OA-3) of the Shiqiantan Formation, and together with zircon U-P dating suggest a probable Moscovian–Kasimovian (middle–late Pennsylvanian) age for the unit. The OA-3 found in the limestones of the Shiqiantan Formation inhabited in open oceanic island arc context that is ecologically equivalent to the Eifelian Mega-Assemblage, and incorporated smooth-podocopid associations. The Shiqiantan Formation OA-3 thus implies a foreshore to offshore environmental transition within a post-collision rift basin. Zhengjiang Luo [luozj@petrochina.com.cn], Rui Wang [Wangrui@petrochina.com.cn], Aliya Amuti [alya@petrochina.com.cn] and Yong Deng [dengyong@petrochina.com.cn], PetroChina Xinjiang Oilfield Company Research Institute of Experiment and Detection and Joint Laboratory of Stratigraphy and Palaeontology, Xinjiang Oilfield Company, Nanjing Institute of Geology and Palaeontology, CAS, Karamay, Xinjiang 834000, PR China Yucong Sun [18635935938@163.com], Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, PR China; University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China; Wenkun Qie [wkqie@nigpas.ac.cn] and Junjun Song [jjsong@nigpas.ac.cn] State Key Laboratory of Paleobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing 210008, PR China; University of Chinese Academy of Sciences (UCAS), Beijing 100049, PR China.","PeriodicalId":272731,"journal":{"name":"Alcheringa: An Australasian Journal of Palaeontology","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132502457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-02DOI: 10.1080/03115518.2023.2181396
Cristian Pardo, C. A. Taboada, A. Taboada, M. A. Pagani
Abstract While some Upper Paleozoic basins in central-western Argentina have been extensively studied, others have poorly understood biostratigraphy. The current biozone heterogeneity between basins could be an artefact of incompletely sampled invertebrate fossil assemblages preventing precise correlations. Here, we therefore provide a taxonomic assessment of brachiopods recovered from fossil-bearing beds of the El Imperial Formation at Arroyo del Imperial, Quebrada de La Horqueta, and Cañón del Atuel. Two distinct biozones are identified: (1) a conspicuous Moscovian Tivertonia jachalensis–Streptorhynchus inaequiornatus Biozone (TS) from the Cañón del Atuel section; (2) a new early late Bashkirian Saltospirifer guevarai–Pericospira sanjuanensis Biozone (SP) from the Arroyo del Imperial and Quebrada de La Horqueta sections. The TS assemblage includes Argentiella stappenbecki, Oehlertella annae, Orbiculoidea saltensis, Coolkilella aredesi, Calytrixia piersoni, Costatumulus sp. and Septosyringothyris? sp. The SP assemblage comprises cf. Buxtonia riojana, Streptorhynchus inaequiornatus, cf. Septosyringothyris (Precosyringothyris) feruglioi, cf. Septosyringothyris (Precosyringothyris) jaguelensis, ?Spiriferellina sp., Saltospirifer guevarai and cf. Pericospira sanjuanensis. The El Imperial Formation brachiopod biozones provide a basis for accurate biocorrelation between regional lithostratigraphical units, and clarify the Upper Paleozoic biochronostratigraphical scheme for central-western Argentina during the Pennsylvanian. Cristian Adrián Pardo [pardocr22@gmail.com], Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP) CONICET-UNPSJB, Roca 780, Esquel (U9200), Chubut, Argentina. Laboratorio de Investigaciones en Evolución y Biodiversidad (LIEB), Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS), Sede Esquel, Edificio de Aulas, km 16.5, Esquel, Chubut, U9200, Argentina; César Augusto Taboada [ctaboada@mef.org.ar], Museo Paleontológico Egidio Feruglio (MEF)-CONICET, Avenida Fontana N°140, Trelew, Chubut, U9100GYO, Argentina; Arturo César Taboada [taboadaart@gmail.com], Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP) CONICET-UNPSJB, Roca 780, Esquel (U9200), Chubut, Argentina. Laboratorio de Investigaciones en Evolución y Biodiversidad (LIEB), Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS), Sede Esquel, Edificio de Aulas, km 16.5, Esquel, Chubut, U9200, Argentina; María Alejandra Pagani [apagani@mef.org.ar], Museo Paleontológico Egidio Feruglio (MEF)-CONICET, Avenida Fontana N°140, Trelew, Chubut, U9100GYO, Argentina.
虽然阿根廷中西部一些上古生界盆地已经被广泛研究，但其他盆地对生物地层学知之甚少。目前盆地间生物带的不均匀性可能是采样不完全的无脊椎动物化石组合的人工产物，妨碍了精确的相关性。因此，我们对在Arroyo del Imperial、Quebrada de La Horqueta和Cañón del Atuel的El Imperial组含化石层中发现的腕足动物进行了分类评估。发现了两个不同的生物带:(1)在Cañón del Atuel剖面发现了一个明显的莫斯科雅卡伦蒂夫托尼亚- inaequiornatus生物带(TS);(2)在Arroyo del Imperial和Quebrada de La Horqueta剖面中发现一个新的巴什基早期晚期saltospiri虫guevarae - periospira sanjuanensis生物带。TS菌群包括阿根廷菌stappenbecki, Oehlertella annae, Orbiculoidea saltensis, Coolkilella aredesi, Calytrixia piersoni, Costatumulus sp.和Septosyringothyris?sp组合包括Buxtonia riojana、Streptorhynchus inaequiornatus、septosyringgothyris (precosyringgothyris) feruglioi、septosyringgothyris (precosyringgothyris) jaguelensis、Spiriferellina sp.、Saltospirifer guevarai和sanjuanpericospira。El Imperial组腕足动物生物带为区域岩石地层单元间的精确生物对比提供了基础，并阐明了阿根廷中西部宾夕法尼亚纪上古生界的生物年代地层方案。Cristian Adrián Pardo [pardocr22@gmail.com]， Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP) CONICET-UNPSJB, Roca 780, Esquel (U9200)，阿根廷Chubut。生物多样性研究实验室(LIEB)，自然科学与科学学院(FCNyCS)， esde Esquel, Aulas大厦，km 16.5, Esquel, chuut, U9200，阿根廷;c·奥古斯托·塔博达[ctaboada@mef.org.ar]， Paleontológico Egidio Feruglio (MEF)-CONICET博物馆，阿根廷丘布丘市特雷卢丰塔纳大街140号;Arturo csamar Taboada [taboadaart@gmail.com]， Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP) CONICET-UNPSJB, Roca 780, Esquel (U9200)， Chubut，阿根廷。生物多样性研究实验室(LIEB)，自然科学与科学学院(FCNyCS)， esde Esquel, Aulas大厦，km 16.5, Esquel, chuut, U9200，阿根廷;María Alejandra Pagani [apagani@mef.org.ar]， Museo Paleontológico Egidio Feruglio (MEF)-CONICET, Avenida Fontana N°140,Trelew, Chubut, U9100GYO，阿根廷。
{"title":"Pennsylvanian brachiopod faunas from the El Imperial Formation (San Rafael Basin) of central-western Argentina","authors":"Cristian Pardo, C. A. Taboada, A. Taboada, M. A. Pagani","doi":"10.1080/03115518.2023.2181396","DOIUrl":"https://doi.org/10.1080/03115518.2023.2181396","url":null,"abstract":"Abstract While some Upper Paleozoic basins in central-western Argentina have been extensively studied, others have poorly understood biostratigraphy. The current biozone heterogeneity between basins could be an artefact of incompletely sampled invertebrate fossil assemblages preventing precise correlations. Here, we therefore provide a taxonomic assessment of brachiopods recovered from fossil-bearing beds of the El Imperial Formation at Arroyo del Imperial, Quebrada de La Horqueta, and Cañón del Atuel. Two distinct biozones are identified: (1) a conspicuous Moscovian Tivertonia jachalensis–Streptorhynchus inaequiornatus Biozone (TS) from the Cañón del Atuel section; (2) a new early late Bashkirian Saltospirifer guevarai–Pericospira sanjuanensis Biozone (SP) from the Arroyo del Imperial and Quebrada de La Horqueta sections. The TS assemblage includes Argentiella stappenbecki, Oehlertella annae, Orbiculoidea saltensis, Coolkilella aredesi, Calytrixia piersoni, Costatumulus sp. and Septosyringothyris? sp. The SP assemblage comprises cf. Buxtonia riojana, Streptorhynchus inaequiornatus, cf. Septosyringothyris (Precosyringothyris) feruglioi, cf. Septosyringothyris (Precosyringothyris) jaguelensis, ?Spiriferellina sp., Saltospirifer guevarai and cf. Pericospira sanjuanensis. The El Imperial Formation brachiopod biozones provide a basis for accurate biocorrelation between regional lithostratigraphical units, and clarify the Upper Paleozoic biochronostratigraphical scheme for central-western Argentina during the Pennsylvanian. Cristian Adrián Pardo [pardocr22@gmail.com], Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP) CONICET-UNPSJB, Roca 780, Esquel (U9200), Chubut, Argentina. Laboratorio de Investigaciones en Evolución y Biodiversidad (LIEB), Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS), Sede Esquel, Edificio de Aulas, km 16.5, Esquel, Chubut, U9200, Argentina; César Augusto Taboada [ctaboada@mef.org.ar], Museo Paleontológico Egidio Feruglio (MEF)-CONICET, Avenida Fontana N°140, Trelew, Chubut, U9100GYO, Argentina; Arturo César Taboada [taboadaart@gmail.com], Centro de Investigación Esquel de Montaña y Estepa Patagónica (CIEMEP) CONICET-UNPSJB, Roca 780, Esquel (U9200), Chubut, Argentina. Laboratorio de Investigaciones en Evolución y Biodiversidad (LIEB), Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS), Sede Esquel, Edificio de Aulas, km 16.5, Esquel, Chubut, U9200, Argentina; María Alejandra Pagani [apagani@mef.org.ar], Museo Paleontológico Egidio Feruglio (MEF)-CONICET, Avenida Fontana N°140, Trelew, Chubut, U9100GYO, Argentina.","PeriodicalId":272731,"journal":{"name":"Alcheringa: An Australasian Journal of Palaeontology","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124833451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-02DOI: 10.1080/03115518.2023.2171125
Qianping Lei, Q. Liu, S. Peng
Abstract The North China type Cambrian System is well developed in northern Anhui Province. A large number of specimens of the trilobite Pseudoblackwelderia lubrica were collected from the Guzhangian (later Cambrian) Changhia Formation at Fenghuangshan in northern Anhui, China, prompting a redefinition of the species. Our emended diagnosis includes: a cone-shaped glabella that is broadly to acutely rounded anteriorly; three pairs of glabellar furrows; the preglabellar field being absent or very short; the librigena with a narrow lateral border, a broad general field and long genal spine; the pygidium with four rings and a terminal piece on the axis; six or seven pairs of pygidial spines with the anterior five pairs being short, the posterolateral pair being long and stout, the seventh pair being small or absent. The new specimens suggest that Neimengguasps is a junior synonym of Pseudoblackwelderia. Moreover, the presence or absence of paired spines on the posterior margin of pygidium is attributed to potential sexual dimorphism. Qianping Lei [cicelyapple@126.com], Nature Department, Changzhou Museum, Changzhou, Jiangsu Province, 213022, PR China Qing Liu [qingliu1029@yeah.net], Room 104, Unit A, Building Six, Fenghuanghu No. 1, Xinbei District, Changzhou 213125, PR China Shanchi Peng [scpeng@nigpas.ac.cn], State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing 210008, China; Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, PR China.
{"title":"The trilobite Pseudoblackwelderia lubrica (Damesellidae) from the Cambrian (Guzhangian) Changhia Formation of Northern Anhui, China, and its potential sexual dimorphism","authors":"Qianping Lei, Q. Liu, S. Peng","doi":"10.1080/03115518.2023.2171125","DOIUrl":"https://doi.org/10.1080/03115518.2023.2171125","url":null,"abstract":"Abstract The North China type Cambrian System is well developed in northern Anhui Province. A large number of specimens of the trilobite Pseudoblackwelderia lubrica were collected from the Guzhangian (later Cambrian) Changhia Formation at Fenghuangshan in northern Anhui, China, prompting a redefinition of the species. Our emended diagnosis includes: a cone-shaped glabella that is broadly to acutely rounded anteriorly; three pairs of glabellar furrows; the preglabellar field being absent or very short; the librigena with a narrow lateral border, a broad general field and long genal spine; the pygidium with four rings and a terminal piece on the axis; six or seven pairs of pygidial spines with the anterior five pairs being short, the posterolateral pair being long and stout, the seventh pair being small or absent. The new specimens suggest that Neimengguasps is a junior synonym of Pseudoblackwelderia. Moreover, the presence or absence of paired spines on the posterior margin of pygidium is attributed to potential sexual dimorphism. Qianping Lei [cicelyapple@126.com], Nature Department, Changzhou Museum, Changzhou, Jiangsu Province, 213022, PR China Qing Liu [qingliu1029@yeah.net], Room 104, Unit A, Building Six, Fenghuanghu No. 1, Xinbei District, Changzhou 213125, PR China Shanchi Peng [scpeng@nigpas.ac.cn], State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing 210008, China; Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, PR China.","PeriodicalId":272731,"journal":{"name":"Alcheringa: An Australasian Journal of Palaeontology","volume":"418 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131356561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-02DOI: 10.1080/03115518.2023.2172210
Y. Zhen
Abstract Fahraeusodus adentatus, the type species of Fahraeusodus, is revised based on the re-examination of the original types and a large collection of topotype specimens from the Emanuel Formation (Lower Ordovician) of the Canning Basin in Western Australia. Confirmation of a modified pastinate Pa element in the septimembrate ramiform-pectiniform apparatus of this conodont species has resulted in a redefined generic definition for Fahraeusodus. Based on this newly defined diagnosis of Fahraeusodus and its type species, all other species previously assigned to Fahraeusodus and Texania are reviewed and now placed in Pohlerodus gen. nov., which is erected herein to substitute Texania, which is a junior homonym. Yong Yi Zhen [ yong-yi.zhen@regional.nsw.gov.au ], Geological Survey of New South Wales, W.B. Clarke Geoscience Centre, 947–953 Londonderry Road, Londonderry NSW 2753, Australia.
摘要通过对西澳大利亚Canning盆地Emanuel组(下奥陶统)大量形态标本的重新鉴定，对Fahraeusodus的模式种法氏蛇(Fahraeusodus adentatus)进行了修正。在该牙形石物种的九瓣形-果胶形器官中证实了一个修饰的pastinate Pa元素，从而重新定义了Fahraeusodus的一般定义。基于这一新定义的Fahraeusodus及其模式种，对以前归属于Fahraeusodus和Texania的所有其他物种进行了回顾，现在将其置于Pohlerodus gen. nov.中，以取代低级同音异义种Texania。Yong Yi Zhen [yong-yi.zhen@regional.nsw.gov.au]，新南威尔士州地质调查局，W.B. Clarke地球科学中心，伦敦德里路947-953号，新南威尔士州伦敦德里2753，澳大利亚。
{"title":"Revision of the Ordovician conodont species Fahraeusodus adentatus and the new genus Pohlerodus","authors":"Y. Zhen","doi":"10.1080/03115518.2023.2172210","DOIUrl":"https://doi.org/10.1080/03115518.2023.2172210","url":null,"abstract":"Abstract Fahraeusodus adentatus, the type species of Fahraeusodus, is revised based on the re-examination of the original types and a large collection of topotype specimens from the Emanuel Formation (Lower Ordovician) of the Canning Basin in Western Australia. Confirmation of a modified pastinate Pa element in the septimembrate ramiform-pectiniform apparatus of this conodont species has resulted in a redefined generic definition for Fahraeusodus. Based on this newly defined diagnosis of Fahraeusodus and its type species, all other species previously assigned to Fahraeusodus and Texania are reviewed and now placed in Pohlerodus gen. nov., which is erected herein to substitute Texania, which is a junior homonym. Yong Yi Zhen [ yong-yi.zhen@regional.nsw.gov.au ], Geological Survey of New South Wales, W.B. Clarke Geoscience Centre, 947–953 Londonderry Road, Londonderry NSW 2753, Australia.","PeriodicalId":272731,"journal":{"name":"Alcheringa: An Australasian Journal of Palaeontology","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122732861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-02DOI: 10.1080/03115518.2023.2184493
C. Watts, Howard Hamon
Abstract The well-preserved fossils of larval Scirtidae (Coleoptera) from the Lower Cretaceous (middle to upper Aptian) Koonwarra Fossil Bed of South Gippsland in Victoria, Australia, were examined and compared with larvae of modern species. The discernible diagnostic features of the fossils conform to the extant genus Nektriscyphon. This is the earliest known evidence for scirtids in the fossil record, and suggests that little morphological change has taken place in these still water-dwelling (lentic) larvae over the last ca 120 million years. Key character states of the fossil Nektriscyphon are compared and the palaeoecological implications discussed. Chris H. S. Watts [chrisw@samuseum.sa.au] and Howard Hamon [howard@hamon.id.au], Entomology Section, South Australian Museum, Adelaide, 5000, Australia.
摘要对澳大利亚维多利亚州南吉普斯兰(South Gippsland) Koonwarra化石床下白垩世(Aptian中上)保存完好的鞘翅目Scirtidae幼虫化石进行了研究，并与现代种幼虫进行了比较。化石的可识别诊断特征符合现存的Nektriscyphon属。这是化石记录中已知最早的关于香虫的证据，并表明在过去的大约1.2亿年里，这些静止的水栖(非水生)幼虫的形态几乎没有发生变化。比较了Nektriscyphon化石的主要特征状态，并讨论了其古生态学意义。Chris H. S. Watts [chrisw@samuseum.sa.au]和Howard Hamon [howard@hamon.id.au]，昆虫科，南澳大利亚博物馆，阿德莱德，5000，澳大利亚。
{"title":"Fossil marsh beetle larvae (Scirtidae: Coleoptera) from the Lower Cretaceous (Aptian) Koonwarra Fossil Bed of Victoria, Australia","authors":"C. Watts, Howard Hamon","doi":"10.1080/03115518.2023.2184493","DOIUrl":"https://doi.org/10.1080/03115518.2023.2184493","url":null,"abstract":"Abstract The well-preserved fossils of larval Scirtidae (Coleoptera) from the Lower Cretaceous (middle to upper Aptian) Koonwarra Fossil Bed of South Gippsland in Victoria, Australia, were examined and compared with larvae of modern species. The discernible diagnostic features of the fossils conform to the extant genus Nektriscyphon. This is the earliest known evidence for scirtids in the fossil record, and suggests that little morphological change has taken place in these still water-dwelling (lentic) larvae over the last ca 120 million years. Key character states of the fossil Nektriscyphon are compared and the palaeoecological implications discussed. Chris H. S. Watts [chrisw@samuseum.sa.au] and Howard Hamon [howard@hamon.id.au], Entomology Section, South Australian Museum, Adelaide, 5000, Australia.","PeriodicalId":272731,"journal":{"name":"Alcheringa: An Australasian Journal of Palaeontology","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133357616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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