D. Kostopoulos, Ayla SEVİM EROL, A. Yavuz, Serdar Mayda
Abstract. We describe here five new bovid crania from the Corakyerler fossil site (Tuglu Formation, Cankiri Basin, north-central Anatolia, Turkey), the fauna of which is dated by magneto- and biostratigraphy to the late Miocene, around the Vallesian–Turolian boundary. The material is assigned to a new bovid taxon of medium-to-large size, Gangraia anatolica gen. and sp. nov., characterized by horn cores that are long, keelless, compressed, obliquely inserted on the frontals, transversally ridged, moderately diverging from each other, slightly twisted homonymously, and sigmoidally curved in lateral view with long, fairly straight tips. The horn core features, along with the presence of a single large sinus occupying the pedicle and the base of the horn core, a strong cranial flexion, a short braincase, the presence of a distinct dorsal parietal boss, wide-apart temporal crests, and a widened anteriorly basioccipital, indicate a mixture of caprine-like and alcelaphine-like features that relate Gangraia anatolica gen. and sp. nov. to the Alcelaphini–Caprini–Hippotragini clade.
{"title":"A new late Miocene bovid (Mammalia: Artiodactyla: Bovidae) from Çorakyerler (Turkey)","authors":"D. Kostopoulos, Ayla SEVİM EROL, A. Yavuz, Serdar Mayda","doi":"10.5194/FR-24-9-2021","DOIUrl":"https://doi.org/10.5194/FR-24-9-2021","url":null,"abstract":"Abstract. We describe here five new bovid crania from the\u0000Corakyerler fossil site (Tuglu Formation, Cankiri Basin,\u0000north-central Anatolia, Turkey), the fauna of which is dated by magneto- and\u0000biostratigraphy to the late Miocene, around the Vallesian–Turolian boundary.\u0000The material is assigned to a new bovid taxon of medium-to-large size,\u0000Gangraia anatolica gen. and sp. nov., characterized by horn cores that are long, keelless, compressed, obliquely\u0000inserted on the frontals, transversally ridged, moderately\u0000diverging from each other, slightly twisted homonymously, and sigmoidally curved in\u0000lateral view with long, fairly straight tips. The horn core features, along\u0000with the presence of a single large sinus occupying the pedicle and the base\u0000of the horn core, a strong cranial flexion, a short braincase, the\u0000presence of a distinct dorsal parietal boss, wide-apart temporal crests,\u0000and a widened anteriorly basioccipital, indicate a mixture of caprine-like and\u0000alcelaphine-like features that relate Gangraia anatolica gen. and sp. nov. to the\u0000Alcelaphini–Caprini–Hippotragini clade.","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"24 1","pages":"9-18"},"PeriodicalIF":1.4,"publicationDate":"2021-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43687537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. A new fungus weevil, Glaesotropis (Electranthribus) rohdendorfi sp. nov. (Coleoptera: Anthribidae), is described from Priabonian Rovno amber. It is similar to G . ( E .) zherikhini (Legalov, 2013a) but differs in the transverse carina extending to the scutellum, shorter antennomere 2, wider antennal club, more convex eyes, and larger body size. It is the first record of the subgenus Electranthribus Legalov, 2013a from Rovno amber, the first named beetle from the Olevsk amber locality, and the sixth amber species reported from the Zhytomyr region. An aggregation of glaesacarid mites Glaesacarus rhombeus (Koch and Berendt, 1854) as a syninclusion with the fungus weevil is reported for the first time (41 specimens); the possibility of the glaesacarids feeding on fungi is discussed.
{"title":"A new species of the genus Glaesotropis Gratshev and Zherikhin, 1995 (Coleoptera, Anthribidae) from Rovno amber","authors":"A. Legalov, V. Nazarenko, E. Perkovsky","doi":"10.5194/FR-24-1-2021","DOIUrl":"https://doi.org/10.5194/FR-24-1-2021","url":null,"abstract":"Abstract. A new fungus weevil, Glaesotropis (Electranthribus) rohdendorfi sp. nov. (Coleoptera: Anthribidae), is described\u0000from Priabonian Rovno amber. It is similar to G . ( E .) zherikhini (Legalov, 2013a) but\u0000differs in the transverse carina extending to the scutellum, shorter\u0000antennomere 2, wider antennal club, more convex eyes, and larger body size.\u0000It is the first record of the subgenus Electranthribus Legalov, 2013a from Rovno amber, the\u0000first named beetle from the Olevsk amber locality, and the sixth amber\u0000species reported from the Zhytomyr region. An aggregation of glaesacarid\u0000mites Glaesacarus rhombeus (Koch and Berendt, 1854) as a syninclusion with the fungus weevil is\u0000reported for the first time (41 specimens); the possibility of the\u0000glaesacarids feeding on fungi is discussed.","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"24 1","pages":"1-7"},"PeriodicalIF":1.4,"publicationDate":"2021-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43360547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Xiaoting Xu, Wei‐Yu‐Dong Deng, Zhekun Zhou, T. Wappler, T. Su
Abstract. The Qinghai–Tibetan Plateau (QTP) played a crucial role in shaping the biodiversity in Asia during the Cenozoic. However, fossil records attributed to insects are still scarce from the QTP, which limits our understanding on the evolution of biodiversity in this large region. Fulgoridae (lanternfly) is a group of large planthopper in body size, which is found primarily in tropical regions. The majority of the Fulgoridae bear brilliant colors and elongated heads. The fossil records of Fulgoridae span from the Eocene to Miocene in the Northern Hemisphere, and only a few fossil species from Neogene deposits have been reported in Asia so far. Here, we report a new fossil record of Fulgoridae from the middle Eocene Lunpola Basin, central QTP. The specimen is in lateral compression, with complete abdomen, thorax, and part of the wings preserved, while most of the head is missing. It belongs to the “lower Fulgoroidea” judging by several strong lateral spines on the hind tibia and a row of teeth at the apex of the second metatarsomere. This fossil specimen is assigned to Fulgoridae by comparison with nine families of the “lower Fulgoroidea”. The specimen represents the earliest Fulgoridae fossil record in Asia and was considered a new morphotaxon based on the peculiar legs and wings. Based on the modern distribution of fulgorid and other paleontological evidence, we suggest a warm climate with relatively low elevation during the middle Eocene in the central QTP. Therefore, this new fossil record not only provides important information on insect diversity in the middle Eocene, but also gives new evidence on the paleoenvironment in the core area of the QTP from the perspective of an insect.
{"title":"The first Fulgoridae (Hemiptera: Fulgoromorpha) from the Eocene of the central Qinghai–Tibetan Plateau","authors":"Xiaoting Xu, Wei‐Yu‐Dong Deng, Zhekun Zhou, T. Wappler, T. Su","doi":"10.5194/fr-24-263-2021","DOIUrl":"https://doi.org/10.5194/fr-24-263-2021","url":null,"abstract":"Abstract. The Qinghai–Tibetan Plateau (QTP) played a crucial role in shaping the biodiversity in Asia during the Cenozoic. However, fossil records attributed to insects are still scarce from the QTP, which limits our understanding on the evolution of biodiversity in this large region. Fulgoridae (lanternfly) is a group of large planthopper in body size, which is found primarily in tropical regions. The majority of the Fulgoridae bear brilliant colors and elongated heads. The fossil records of Fulgoridae span from the Eocene to Miocene in the Northern Hemisphere, and only a few fossil species from Neogene deposits have been reported in Asia so far. Here, we report a new fossil record of Fulgoridae from the middle Eocene Lunpola Basin, central QTP. The specimen is in lateral compression, with complete abdomen, thorax, and part of the wings preserved, while most of the head is missing. It belongs to the “lower Fulgoroidea” judging by several strong lateral spines on the hind tibia and a row of teeth at the apex of the second metatarsomere. This fossil specimen is assigned to Fulgoridae by comparison with nine families of the “lower Fulgoroidea”. The specimen represents the earliest Fulgoridae fossil record in Asia and was considered a new morphotaxon based on the peculiar legs and wings. Based on the modern distribution of fulgorid and other paleontological evidence, we suggest a warm climate with relatively low elevation during the middle Eocene in the central QTP. Therefore, this new fossil record not only provides important information on insect diversity in the middle Eocene, but also gives new evidence on the paleoenvironment in the core area of the QTP from the perspective of an insect.","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71234318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. Amber is chiefly known as a preservational medium of biological inclusions, but it is itself a chemofossil, comprised of fossilised plant resin. The chemistry of today's resins has been long investigated as a means of understanding the botanical sources of ambers. However, little is known about the chemical variability of resins and consequently about that of the ambers that are derived from particular resins. We undertook experimental resin production in Araucariacean plants to clarify how much natural resin variability is present in two species, Agathis australis and Wollemia nobilis, and whether different resin exudation stimuli types can be chemically identified and differentiated. The latter were tested on the plants, and the resin exudates were collected and investigated with Fourier-transform infrared attenuated total reflection (FTIR-ATR) spectroscopy to give an overview of their chemistry for comparisons, including multivariate analyses. The Araucariacean resins tested did not show distinct chemical signatures linked to a particular resin-inducing treatment. Nonetheless, we did detect two separate groupings of the treatments for Agathis, in which the branch removal treatment and mimicked insect-boring treatment-derived resin spectra were more different from the resin spectra derived from other treatments. This appears linked to the lower resin viscosities observed in the branch- and insect-treatment-derived resins. However the resins, no matter the treatment, could be distinguished from both species. The effect of genetic variation was also considered using the same stimuli on both the seed-grown A. australis derived from wild-collected populations and on clonally derived W. nobilis plants with natural minimal genetic diversity. The variability in the resin chemistries collected did reflect the genetic variability of the source plant. We suggest that this natural variability needs to be taken into account when testing resin and amber chemistries in the future.
{"title":"Experimental induction of resins as a tool to understand variability in ambers","authors":"L. Seyfullah, E. Roberts, P. Jardine, A. Schmidt","doi":"10.5194/fr-24-321-2021","DOIUrl":"https://doi.org/10.5194/fr-24-321-2021","url":null,"abstract":"Abstract. Amber is chiefly known as a preservational medium of biological inclusions, but it is itself a chemofossil, comprised of fossilised plant resin. The chemistry of today's resins has been long investigated as a means of understanding the botanical sources of ambers. However, little is known about the chemical variability of resins and consequently about that of the ambers that are derived from particular resins. We undertook experimental resin production in Araucariacean plants to clarify how much natural resin variability is present in two species, Agathis australis and Wollemia nobilis, and whether different resin exudation stimuli types can be chemically identified and differentiated. The latter were tested on the plants, and the resin exudates were collected and investigated with Fourier-transform infrared attenuated total reflection (FTIR-ATR) spectroscopy to give an overview of their chemistry for comparisons, including multivariate analyses. The Araucariacean resins tested did not show distinct chemical signatures linked to a particular resin-inducing treatment. Nonetheless, we did detect two separate groupings of the treatments for Agathis, in which the branch removal treatment and mimicked insect-boring treatment-derived resin spectra were more different from the resin spectra derived from other treatments. This appears linked to the lower resin viscosities observed in the branch- and insect-treatment-derived resins. However the resins, no matter the treatment, could be distinguished from both species. The effect of genetic variation was also considered using the same stimuli on both the seed-grown A. australis derived from wild-collected populations and on clonally derived W. nobilis plants with natural minimal genetic diversity. The variability in the resin chemistries collected did reflect the genetic variability of the source plant. We suggest that this natural variability needs to be taken into account when testing resin and amber chemistries in the future.","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71234391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Volker Lohrmann, Qi Zhang, P. Michalik, J. Blaschke, P. Müller, L. Jeanneau, V. Perrichot
Abstract. Rhopalosomatidae, currently considered the sister group of the Vespidae, are an enigmatic family of aculeate wasps that originated in the Late Jurassic or Early Cretaceous. Despite their considerable age, very few fossils of the family have been reported – all of them in amber (Miocene Dominican, Miocene Mexican, and mid-Cretaceous Burmese ambers). Here we report a new mid-Cretaceous rhopalosomatid wasp, Cretolixon alatum Lohrmann, gen. et sp. nov., from Burmese (Kachin) amber. This new genus has a unique mixture of characters, some of which are only known from the recent brachypterous genus Olixon and others of which are known only from the recent macropterous genera. Thus, Cretolixon Lohrmann, gen. nov. not only provides further evidence for the monophyly of the family but also contributes evidence for the monophyly of the Rhopalosomatinae. Key characters of the family are discussed, and an updated checklist of the world genera and fossil species and occurrences of Rhopalosomatidae is provided. Additionally, a chemical analysis was performed for three of the newly reported fossils as well as for the amber piece containing the rhopalosomatid larva described by Lohrmann and Engel (2017) to ascertain their amber vs. copal nature and their affinities with each other and previously described Burmese amber.
{"title":"†Cretolixon – a remarkable new genus of rhopalosomatid wasps (Hymenoptera: Vespoidea: Rhopalosomatidae) from chemically tested, mid-Cretaceous Burmese (Kachin) amber supports the monophyly of Rhopalosomatinae","authors":"Volker Lohrmann, Qi Zhang, P. Michalik, J. Blaschke, P. Müller, L. Jeanneau, V. Perrichot","doi":"10.5194/fr-23-215-2020","DOIUrl":"https://doi.org/10.5194/fr-23-215-2020","url":null,"abstract":"Abstract. Rhopalosomatidae, currently considered the sister group\u0000of the Vespidae, are an enigmatic family of aculeate wasps that originated\u0000in the Late Jurassic or Early Cretaceous. Despite their considerable age,\u0000very few fossils of the family have been reported – all of them in amber\u0000(Miocene Dominican, Miocene Mexican, and mid-Cretaceous Burmese ambers).\u0000Here we report a new mid-Cretaceous rhopalosomatid wasp, Cretolixon alatum Lohrmann, gen.\u0000et sp. nov., from Burmese (Kachin) amber. This new genus has a unique\u0000mixture of characters, some of which are only known from the recent\u0000brachypterous genus Olixon and others of which are known only from the recent macropterous genera.\u0000Thus, Cretolixon Lohrmann, gen. nov. not only provides further evidence for the\u0000monophyly of the family but also contributes evidence for the monophyly of\u0000the Rhopalosomatinae. Key characters of the family are discussed, and an\u0000updated checklist of the world genera and fossil species and occurrences of\u0000Rhopalosomatidae is provided. Additionally, a chemical analysis was\u0000performed for three of the newly reported fossils as well as for the amber\u0000piece containing the rhopalosomatid larva described by Lohrmann and Engel (2017) to ascertain their amber vs. copal nature and their affinities with\u0000each other and previously described Burmese amber.","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"23 1","pages":"215-236"},"PeriodicalIF":1.4,"publicationDate":"2020-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47918605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. Embolomeri were semiaquatic predators prevalent in the Carboniferous, with only two species from the early Permian (Cisuralian). A new embolomere, Seroherpeton yangquanensis gen. et sp. nov. (Zoobank Registration number: urn:lsid:zoobank.org:act:790BEB94-C2CC-4EA4-BE96-2A1BC4AED748, registration: 23 November 2020), is named based on a partial right upper jaw and palate from the Sunjiagou Formation of Yangquan, Shanxi, China, and is late Wuchiapingian (late Permian) in age. It is the youngest embolomere known to date and the only embolomere reported from North China Block. Its phylogenetic position within Embolomeri is confirmed by the strongly developed descending flange on the quadrate ramus of the pterygoid. The new taxon is unique among embolomeres by features like a partial coverage of a denticle shagreens on the pterygoid; presence of a cylindrical shaft on the pterygoid, and two pairs of very large ectopterygoid tusks. Phylogenetic analysis shows Seroherpeton as being the sister group of a clade consisting of Proterogyrinus, Archeria, and Pholiderpeton. We hypothesize that the dispersal and decline of the embolomeres from Carboniferous to late Permian (Lopingian) is related to the climate changes, especially aridification, of the paleotropical regions.
{"title":"The youngest occurrence of embolomeres (Tetrapoda: Anthracosauria) from the Sunjiagou Formation (Lopingian, Permian) of North China","authors":"Jianye Chen, Jun Liu","doi":"10.5194/fr-23-205-2020","DOIUrl":"https://doi.org/10.5194/fr-23-205-2020","url":null,"abstract":"Abstract. Embolomeri were semiaquatic predators prevalent in the Carboniferous, with\u0000only two species from the early Permian (Cisuralian). A new embolomere,\u0000Seroherpeton yangquanensis gen. et sp. nov. (Zoobank Registration number:\u0000urn:lsid:zoobank.org:act:790BEB94-C2CC-4EA4-BE96-2A1BC4AED748, registration: 23 November 2020), is named based on a partial right upper jaw and palate\u0000from the Sunjiagou Formation of Yangquan, Shanxi, China, and is late\u0000Wuchiapingian (late Permian) in age. It is the youngest embolomere known to\u0000date and the only embolomere reported from North China Block. Its\u0000phylogenetic position within Embolomeri is confirmed by the strongly\u0000developed descending flange on the quadrate ramus of the pterygoid. The new\u0000taxon is unique among embolomeres by features like a partial coverage of a\u0000denticle shagreens on the pterygoid; presence of a cylindrical shaft on the\u0000pterygoid, and two pairs of very large ectopterygoid tusks. Phylogenetic\u0000analysis shows Seroherpeton as being the sister group of a clade consisting of\u0000Proterogyrinus, Archeria, and Pholiderpeton. We hypothesize that the dispersal and decline of the embolomeres\u0000from Carboniferous to late Permian (Lopingian) is related to the climate\u0000changes, especially aridification, of the paleotropical regions.","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"23 1","pages":"205-213"},"PeriodicalIF":1.4,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43637316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. The new weevil genus Igneonasus gen. nov. (type species: I. rudolphi sp. nov.) of the tribe Ceutorhynchini (Curculionidae: Conoderinae: Ceutorhynchitae) is described from the late Oligocene of Fossillagerstatte Enspel, Germany. The new genus differs from the similar genus Stenocarus Thomson, 1859 in the anterior margin of the pronotum, which is not raised, a pronotum without tubercles on the sides, and a femur without teeth. This weevil is the largest representative of this supertribe and the first fossil Curculionidae species described from the paleolake Enspel. In this ancient ecosystem, weevils were at least sometimes an important food resource for the cyprinid fish Palaeorutilus enspelensis.
摘要描述了德国Enspel地区晚渐新世象鼻虫科象鼻虫科象鼻虫科象鼻虫科新属Igneonasus gen. nov(模式种:I. rudolphi sp. nov)。这个新属与1859年的类似的窄鼻属汤姆森(Stenocarus Thomson)的不同之处在于，它的前缘没有凸起，前缘两侧没有结节，股骨没有牙齿。这只象鼻虫是这个超级部落的最大代表，也是在古恩斯佩尔湖发现的第一个象鼻虫科化石。在这个古老的生态系统中，象鼻虫至少有时是鲤科鱼类古贻贝(paleorutilus enspelensis)的重要食物来源。
{"title":"New genus of the tribe Ceutorhynchini (Coleoptera: Curculionidae) from the late Oligocene of Enspel, southwestern Germany, with a remark on the role of weevils in the ancient food web","authors":"A. Legalov, M. Poschmann","doi":"10.5194/fr-23-197-2020","DOIUrl":"https://doi.org/10.5194/fr-23-197-2020","url":null,"abstract":"Abstract. The new weevil genus Igneonasus gen. nov. (type species: I. rudolphi sp. nov.) of the tribe\u0000Ceutorhynchini (Curculionidae: Conoderinae: Ceutorhynchitae) is described\u0000from the late Oligocene of Fossillagerstatte Enspel, Germany. The new\u0000genus differs from the similar genus Stenocarus Thomson, 1859 in the anterior margin\u0000of the pronotum, which is not raised, a pronotum without tubercles on the\u0000sides, and a femur without teeth. This weevil is the largest representative\u0000of this supertribe and the first fossil Curculionidae species described from\u0000the paleolake Enspel. In this ancient ecosystem, weevils were at least sometimes\u0000an important food resource for the cyprinid fish Palaeorutilus enspelensis.","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"23 1","pages":"197-204"},"PeriodicalIF":1.4,"publicationDate":"2020-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71234736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. In the Jehol Biota, the filter-feeding ctenochasmatid pterosaurs flourished with a high biodiversity. Here, we report a new wing skeleton of the ctenochasmatid Forfexopterus from the Early Cretaceous Jiufotang Formation in Jianchang, western Liaoning, China. The specimen exhibits the sole autapomorphy, the first wing phalanx shorter than the second and longer than the third. Interestingly, it exhibits a skeletal maturity with co-ossified elements, but it is only about 75 % the size of the immature holotype. This discrepancy reveals developmental variation of Forfexopterus, but its relationship with sexual dimorphism needs to be certain by more available material.
{"title":"A new wing skeleton of Forfexopterus (Pterosauria: Ctenochasmatidae) from the Early Cretaceous Jehol Biota reveals a developmental variation","authors":"Chang-Fu Zhou, Jiahao Wang, Ziheng Zhu","doi":"10.5194/fr-23-191-2020","DOIUrl":"https://doi.org/10.5194/fr-23-191-2020","url":null,"abstract":"Abstract. In the Jehol Biota, the filter-feeding ctenochasmatid pterosaurs flourished\u0000with a high biodiversity. Here, we report a new wing skeleton of the\u0000ctenochasmatid Forfexopterus from the Early Cretaceous Jiufotang Formation in Jianchang,\u0000western Liaoning, China. The specimen exhibits the sole autapomorphy, the\u0000first wing phalanx shorter than the second and longer than the third.\u0000Interestingly, it exhibits a skeletal maturity with co-ossified elements, but it\u0000is only about 75 % the size of the immature holotype. This discrepancy\u0000reveals developmental variation of Forfexopterus, but its relationship with sexual\u0000dimorphism needs to be certain by more available material.","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"23 1","pages":"191-196"},"PeriodicalIF":1.4,"publicationDate":"2020-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45465050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Victoria M. Arbour, Derek W. Larson, M. Vavrek, L. Buckley, David C Evans
Abstract. Fragmentary but associated dinosaur bones collected in 1930 from the Pine River of northeastern British Columbia are identified here as originating from an ankylosaur. The specimen represents only the second occurrence of dinosaur skeletal material from the Cenomanian Dunvegan Formation and the first from Dunvegan outcrops in the province of British Columbia. Nodosaurid ankylosaur footprints are common ichnofossils in the formation, but the skeletal material described here is too fragmentary to confidently assign to either a nodosaurid or ankylosaurid ankylosaur. The Cenomanian is a time of major terrestrial faunal transitions in North America, but many localities of this age are located in the southern United States; the discovery of skeletal fossils from the Pine River demonstrates the potential for the Dunvegan Formation to produce terrestrial vertebrate fossils that may provide important new data on this significant transitional period during the Cretaceous.
{"title":"An ankylosaurian dinosaur from the Cenomanian Dunvegan Formation of northeastern British Columbia, Canada","authors":"Victoria M. Arbour, Derek W. Larson, M. Vavrek, L. Buckley, David C Evans","doi":"10.5194/fr-23-179-2020","DOIUrl":"https://doi.org/10.5194/fr-23-179-2020","url":null,"abstract":"Abstract. Fragmentary but associated dinosaur bones collected in 1930 from\u0000the Pine River of northeastern British Columbia are identified here as\u0000originating from an ankylosaur. The specimen represents only the second\u0000occurrence of dinosaur skeletal material from the Cenomanian Dunvegan\u0000Formation and the first from Dunvegan outcrops in the province of British\u0000Columbia. Nodosaurid ankylosaur footprints are common ichnofossils in the\u0000formation, but the skeletal material described here is too fragmentary to\u0000confidently assign to either a nodosaurid or ankylosaurid ankylosaur. The\u0000Cenomanian is a time of major terrestrial faunal transitions in North\u0000America, but many localities of this age are located in the southern United\u0000States; the discovery of skeletal fossils from the Pine River demonstrates\u0000the potential for the Dunvegan Formation to produce terrestrial vertebrate\u0000fossils that may provide important new data on this significant transitional\u0000period during the Cretaceous.","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"23 1","pages":"179-189"},"PeriodicalIF":1.4,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45264176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract. A new pear-shaped weevil, Toxorhynchus europeoeocenicus Bukejs et Legalov, sp. nov. (Coleoptera: Brentidae: Apioninae), is described from upper Eocene Rovno amber using X-ray microcomputed tomography ( µ CT). The new fossil species differs from the extinct Toxorhynchus robustus Poinar et Legalov, 2015 (Dominican amber, lower Miocene) in the larger body size, narrower elytral striae, and wider pronotum. It is the first record of the family Brentidae in Rovno amber and the first record of the genus Toxorhynchus in the eastern hemisphere (urn:lsid:zoobank.org:pub:8FB7B299-EE75-4556-B4EA-203A3CBED84C).
摘要使用X射线微计算机断层扫描（µCT）从上始新世Rovnoamber描述了一种新的梨形象甲，Toxorhychus europeeocenicus Bukejs et Legalov，sp.nov.（鞘翅目：小蜂科：小蜂亚科）。新化石物种与已灭绝的Toxorhynchus robustus Poinar et Legalov，2015（多明尼加琥珀，下中新世）的不同之处在于体型更大、鞘翅纹更窄和毛宽。它是在罗夫诺琥珀中的第一个布伦科记录，也是在东半球的第一个毒蜥属记录（urn:lsid:zoobank.org/pub:8FB7B299-EE75-4556-B4EA-203A3BED84C）。
{"title":"The first record of Brentidae (Coleoptera) in Eocene Rovno amber with description of a new fossil species of Toxorhynchus Scudder, 1893","authors":"A. Bukejs, A. Legalov","doi":"10.5194/fr-23-169-2020","DOIUrl":"https://doi.org/10.5194/fr-23-169-2020","url":null,"abstract":"Abstract. A new pear-shaped weevil, Toxorhynchus europeoeocenicus Bukejs et Legalov, sp. nov.\u0000(Coleoptera: Brentidae: Apioninae), is described from upper Eocene Rovno\u0000amber using X-ray microcomputed tomography ( µ CT). The new fossil\u0000species differs from the extinct Toxorhynchus robustus Poinar et Legalov, 2015 (Dominican amber,\u0000lower Miocene) in the larger body size, narrower elytral striae, and wider\u0000pronotum. It is the first record of the family Brentidae in Rovno amber and\u0000the first record of the genus Toxorhynchus in the eastern hemisphere (urn:lsid:zoobank.org:pub:8FB7B299-EE75-4556-B4EA-203A3CBED84C).","PeriodicalId":48830,"journal":{"name":"Fossil Record","volume":"23 1","pages":"169-177"},"PeriodicalIF":1.4,"publicationDate":"2020-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45194778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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