Alexander K. Hastings, B. Schubert, Jason R. Bourque, R. Hulbert
The genus Alligator has been represented by large-bodied, predatory species in southeastern North America for at least 18 million years (early Miocene), in what is now the southeastern United States. However, the first occurrences of the genus were from a smaller-bodied species, A. prenasalis , known from South Dakota and Nebraska that are about 34 million years old (latest Eocene to earliest Oligocene). Ancestors of A. prenasalis were likewise small-bodied and are from the Great Plains. This 16 mil-lion-year-gap has left open questions regarding the arrival and body size shift of Alligator from what is now the Great Plains to southeastern North America. Recently studied fossil material from Florida exhibits the oldest occurrence of Alligator in the region (about 28–26 million years ago). A well-preserved premaxilla (UF 422816) bears the diagnostic premaxillary 'notch' of Alligator . Additional material from this and two other Oligocene sites in Florida are indicative of Alligator as well. These include well-devel-oped osteoderms, which suggest possible maturity at small body size. As of now, no records of larger Alligator from this time (or older) have been recovered from the region, possibly indicating body size may not have increased in Alligator until the Miocene
{"title":"Oldest record of Alligator in southeastern North America","authors":"Alexander K. Hastings, B. Schubert, Jason R. Bourque, R. Hulbert","doi":"10.26879/1223","DOIUrl":"https://doi.org/10.26879/1223","url":null,"abstract":"The genus Alligator has been represented by large-bodied, predatory species in southeastern North America for at least 18 million years (early Miocene), in what is now the southeastern United States. However, the first occurrences of the genus were from a smaller-bodied species, A. prenasalis , known from South Dakota and Nebraska that are about 34 million years old (latest Eocene to earliest Oligocene). Ancestors of A. prenasalis were likewise small-bodied and are from the Great Plains. This 16 mil-lion-year-gap has left open questions regarding the arrival and body size shift of Alligator from what is now the Great Plains to southeastern North America. Recently studied fossil material from Florida exhibits the oldest occurrence of Alligator in the region (about 28–26 million years ago). A well-preserved premaxilla (UF 422816) bears the diagnostic premaxillary 'notch' of Alligator . Additional material from this and two other Oligocene sites in Florida are indicative of Alligator as well. These include well-devel-oped osteoderms, which suggest possible maturity at small body size. As of now, no records of larger Alligator from this time (or older) have been recovered from the region, possibly indicating body size may not have increased in Alligator until the Miocene","PeriodicalId":56100,"journal":{"name":"Palaeontologia Electronica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69148039","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}
Rich foraminiferal assemblages from the Bama Platform in South China allow clarifying the systematics, composition, and biostratigraphy of the family Janischewski-nidae. The family is comprised of four genera, Janischewskina, Cribrospira, Bibradya, and Parajanischewskina . The genera Rhodesinella and Groessensella are considered to be synonyms of Cribrospira and Bibradya , respectively
{"title":"New species and evolution of the foraminiferal family Janischewskinidae in the middle–upper Mississippian of South China","authors":"Chaolu Liu, D. Vachard, P. Pedro, I. Coronado","doi":"10.26879/1238","DOIUrl":"https://doi.org/10.26879/1238","url":null,"abstract":"Rich foraminiferal assemblages from the Bama Platform in South China allow clarifying the systematics, composition, and biostratigraphy of the family Janischewski-nidae. The family is comprised of four genera, Janischewskina, Cribrospira, Bibradya, and Parajanischewskina . The genera Rhodesinella and Groessensella are considered to be synonyms of Cribrospira and Bibradya , respectively","PeriodicalId":56100,"journal":{"name":"Palaeontologia Electronica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69148232","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}
M. Newman, Jan de Blaauwen, C. Burrow, Roger Jones, R. Davidson
{"title":"The Middle Devonian acanthodian Orcadacanthus n. gen. from the Orcadian Basin of Scotland","authors":"M. Newman, Jan de Blaauwen, C. Burrow, Roger Jones, R. Davidson","doi":"10.26879/1240","DOIUrl":"https://doi.org/10.26879/1240","url":null,"abstract":"","PeriodicalId":56100,"journal":{"name":"Palaeontologia Electronica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69148240","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}
{"title":"The anatomy and diversity of the pterosaurian sternum","authors":"D. Hone","doi":"10.26879/1261","DOIUrl":"https://doi.org/10.26879/1261","url":null,"abstract":",","PeriodicalId":56100,"journal":{"name":"Palaeontologia Electronica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69148537","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}
After its separation from the world ocean, the Paratethys formed a large inland marine water body during the Serravallian and Tortonian (Middle to Late Miocene) with a diverse environmental setting that underwent multiple fast and short-lived ecological changes. The trapped bony fish fauna either adapted to the rapid ecological changes (forced endemism) or perished. A major event during the late Sarmatian s.l. (Kherso-nian; late Tortonian; Late Miocene) was the Khersonian Crisis in the Eastern Para-tethys, which is postulated to have
{"title":"Approaching the Khersonian Crisis: Fish otoliths from the upper Bessarabian (middle Sarmatian s.l.; Late Miocene) of Jurkine (Kerch Peninsula, Crimea)","authors":"W. Schwarzhans, A. Bratishko, Y. Vernyhorova","doi":"10.26879/1300","DOIUrl":"https://doi.org/10.26879/1300","url":null,"abstract":"After its separation from the world ocean, the Paratethys formed a large inland marine water body during the Serravallian and Tortonian (Middle to Late Miocene) with a diverse environmental setting that underwent multiple fast and short-lived ecological changes. The trapped bony fish fauna either adapted to the rapid ecological changes (forced endemism) or perished. A major event during the late Sarmatian s.l. (Kherso-nian; late Tortonian; Late Miocene) was the Khersonian Crisis in the Eastern Para-tethys, which is postulated to have","PeriodicalId":56100,"journal":{"name":"Palaeontologia Electronica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69149038","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}
True primates in the Canadian fossil record are known from only the Eocene epoch of southwestern Saskatchewan. They were originally described in the 1980s from two sets of localities: the Lac Pelletier localities (Duchesnean) and the Swift Current Creek (SCC) locality (Uintan). Additional fieldwork and sample sorting were carried out over the last decade. The present study includes a description of new primate dental material from the Swift Current Creek (SCC) locality. We name a new genus and two new species and revise the known primates for both the Lac Pelletier and SCC faunas. The Cypress Hills region of Saskatchewan likely represented a haven for small primates in the Eocene and may have supported an endemic primate fauna.
在加拿大的化石记录中，真正的灵长类动物只出现在萨斯喀彻温省西南部的始新世。它们最初是在20世纪80年代从两个地方描述的:Lac Pelletier地区(Duchesnean)和Swift Current Creek (SCC)地区(Uintan)。在过去十年中进行了额外的实地调查和样本分类。目前的研究包括对Swift Current Creek (SCC)地区新的灵长类动物牙齿材料的描述。我们命名了一个新属和两个新种，并修改了Lac Pelletier和SCC动物群的已知灵长类动物。萨斯喀彻温省的柏树山地区可能代表了始新世小型灵长类动物的避难所，并可能支持特有的灵长类动物群。
{"title":"New primates from the Eocene of Saskatchewan, Canada: Revision of the primates from the Cypress Hills Formation with description of new taxa","authors":"Jonathan M. G. Perry, A. Dutchak, J. Theodor","doi":"10.26879/1246","DOIUrl":"https://doi.org/10.26879/1246","url":null,"abstract":"True primates in the Canadian fossil record are known from only the Eocene epoch of southwestern Saskatchewan. They were originally described in the 1980s from two sets of localities: the Lac Pelletier localities (Duchesnean) and the Swift Current Creek (SCC) locality (Uintan). Additional fieldwork and sample sorting were carried out over the last decade. The present study includes a description of new primate dental material from the Swift Current Creek (SCC) locality. We name a new genus and two new species and revise the known primates for both the Lac Pelletier and SCC faunas. The Cypress Hills region of Saskatchewan likely represented a haven for small primates in the Eocene and may have supported an endemic primate fauna.","PeriodicalId":56100,"journal":{"name":"Palaeontologia Electronica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69147851","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}
C. Caballero-Viñas, J. Alvarado‐Ortega, Kleyton Magno Cantalice Severiano
The splitfin fossil species Paleocharacodon guzmanae gen. and sp. nov. is erected based on the osteological study of 14 fossil male and female specimens recovered in the Pliocene deposits of the Paleolake Amajac, in Sanctórum, Hidalgo, Mexico. This new cyprinodontiform fish exhibits the diagnostic features of the family Goodeidae and subfamily Goodeinae; like all the goodeids, its premaxilla has a straight distal end, and its premaxillary ascending process is small; and, like the goodeines, this new species was viviparous, its first anal fin ray is rudimentary, and the males show an andropodium. Although P. guzmanae displays numerous primitive features, it is not possible to place it in any of the goodeine tribes, which currently are vaguely defined by osteological features. This new species seems to be closely related to Characodon; both share a peculiar osteological character; the articular facet for the quadrate is a donut-like structure, in which the retroarticular forms the central region, and a couple of semicircular anguloarticular processes form the surrounding part. This species differs from other goodeids mainly in two features; it has a posttemporal bone with small anteroventral processes, and the openings of its supraorbital canal show the formula12a, 2b-3a, 3b-4a, 4b-5a, and 5b-7. The discovery of this extinct goodeid species in the great Pánuco-Salado Basin on the eastern slope of Mexican territory represents an unexpected historical element. Carmen Caballero-Viñas. Departamento de Paleontología, Instituto de Geología, Universidad Nacional Autónoma de México. Circuito de la Investigación S/N, Ciudad Universitaria, Coyoacán, Ciudad de México, 04510, Mexico. c-caballero@live.com.mx Jesús Alvarado-Ortega. Departamento de Paleontología, Instituto de Geología, Universidad Nacional Autónoma de México. Circuito de la Investigación S/N, Ciudad Universitaria, Coyoacán, Ciudad de México, 04510, México. alvarado@geología.unam.mx Kleyton Magno Cantalice Severiano. Departamento de Paleontología, Instituto de Geología, Universidad CABALLERO-VIÑAS ET AL.: PLIOCENE GOODEID FROM MEXICO 2 Nacional Autónoma de México. Circuito de la Investigación S/N, Ciudad Universitaria, Coyoacán, Ciudad de México, 04510, México. kleytonmc@geologia.unam.mx
根据对墨西哥伊达尔戈Sanctórum古阿马亚克湖上新世沉积物中发现的14个雌雄化石标本的骨学研究，建立了古马尼亚古裂片化石种古马尼亚古特征龙gen. and sp. 11 .。这一新棘齿鱼表现出鳖科和鳖亚科的诊断特征;与所有的好齿类一样，其前颌远端直，前颌上突小;而且，像古德尼鱼一样，这个新物种是胎生的，它的第一个肛门鳍是初级的，雄性有一个雄蕊柱体。尽管古氏古猿显示出许多原始特征，但不可能将其归入任何古迪恩部落，目前这些古迪恩部落是由骨学特征模糊定义的。这个新种似乎与characterodon有密切的亲缘关系;两者都有一种特殊的骨学特征;方椎体的关节突是一个环状结构，其中关节后形成中心区域，几个半圆形关节外突形成周围部分。本种不同于其他好蛛主要有两个特征;它有颞骨和小的前腹突，其眶上管开口显示公式12a, 2b-3a, 3b-4a, 4b-5a和5b-7。在墨西哥领土东坡的Pánuco-Salado大盆地中发现的这种已灭绝的优良物种代表了一个意想不到的历史因素。卡门Caballero-Vinas。墨西哥国立大学Autónoma Geología研究所Paleontología系。墨西哥墨西哥城，04510，墨西哥，墨西哥，墨西哥，墨西哥，墨西哥，墨西哥，墨西哥，墨西哥，墨西哥，墨西哥，墨西哥，墨西哥，墨西哥，墨西哥，墨西哥c-caballero@live.com.mx Jesús阿尔瓦拉多-奥尔特加。墨西哥国立大学Autónoma Geología研究所Paleontología系。电子线路Investigación s.s.n, Ciudad Universitaria, Coyoacán, Ciudad de msamico, 04510, msamico。alvarado@geologia.unam。克雷顿·马格诺·坎塔利斯·塞维利亚诺。Paleontología系，Geología研究所，CABALLERO-VIÑAS等:上新世古数据来自墨西哥2国家Autónoma de msamxico。电子线路Investigación s.s.n, Ciudad Universitaria, Coyoacán, Ciudad de msamico, 04510, msamico。kleytonmc@geologia.unam.mx
{"title":"A Pliocene goodeid fish of the Paleolake Amajac, Sanctórum, Hidalgo, Mexico","authors":"C. Caballero-Viñas, J. Alvarado‐Ortega, Kleyton Magno Cantalice Severiano","doi":"10.26879/1259","DOIUrl":"https://doi.org/10.26879/1259","url":null,"abstract":"The splitfin fossil species Paleocharacodon guzmanae gen. and sp. nov. is erected based on the osteological study of 14 fossil male and female specimens recovered in the Pliocene deposits of the Paleolake Amajac, in Sanctórum, Hidalgo, Mexico. This new cyprinodontiform fish exhibits the diagnostic features of the family Goodeidae and subfamily Goodeinae; like all the goodeids, its premaxilla has a straight distal end, and its premaxillary ascending process is small; and, like the goodeines, this new species was viviparous, its first anal fin ray is rudimentary, and the males show an andropodium. Although P. guzmanae displays numerous primitive features, it is not possible to place it in any of the goodeine tribes, which currently are vaguely defined by osteological features. This new species seems to be closely related to Characodon; both share a peculiar osteological character; the articular facet for the quadrate is a donut-like structure, in which the retroarticular forms the central region, and a couple of semicircular anguloarticular processes form the surrounding part. This species differs from other goodeids mainly in two features; it has a posttemporal bone with small anteroventral processes, and the openings of its supraorbital canal show the formula12a, 2b-3a, 3b-4a, 4b-5a, and 5b-7. The discovery of this extinct goodeid species in the great Pánuco-Salado Basin on the eastern slope of Mexican territory represents an unexpected historical element. Carmen Caballero-Viñas. Departamento de Paleontología, Instituto de Geología, Universidad Nacional Autónoma de México. Circuito de la Investigación S/N, Ciudad Universitaria, Coyoacán, Ciudad de México, 04510, Mexico. c-caballero@live.com.mx Jesús Alvarado-Ortega. Departamento de Paleontología, Instituto de Geología, Universidad Nacional Autónoma de México. Circuito de la Investigación S/N, Ciudad Universitaria, Coyoacán, Ciudad de México, 04510, México. alvarado@geología.unam.mx Kleyton Magno Cantalice Severiano. Departamento de Paleontología, Instituto de Geología, Universidad CABALLERO-VIÑAS ET AL.: PLIOCENE GOODEID FROM MEXICO 2 Nacional Autónoma de México. Circuito de la Investigación S/N, Ciudad Universitaria, Coyoacán, Ciudad de México, 04510, México. kleytonmc@geologia.unam.mx","PeriodicalId":56100,"journal":{"name":"Palaeontologia Electronica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69148460","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}
Stephanie K Drumheller, Hannah F. Maddox, M. Stocker, Christopher R. Noto
{"title":"Differentiating convergent pathologies in turtle shells using computed tomographic scanning of modern and fossil bone","authors":"Stephanie K Drumheller, Hannah F. Maddox, M. Stocker, Christopher R. Noto","doi":"10.26879/1230","DOIUrl":"https://doi.org/10.26879/1230","url":null,"abstract":"","PeriodicalId":56100,"journal":{"name":"Palaeontologia Electronica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69148054","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}
René H. B. Fraaije, B. V. van Bakel, J. Jagt, M. Krobicki, À. Ossó, F. Palero, J. Wallaard
Representatives of the family Synaxidae, commonly referred to as furry lobsters, are rare constituents of modern-day marine communities, while their fossil record suggests that they were more common in the past, in reefal settings during the Late Jurassic across Europe, from where at least three species have been recorded
{"title":"A reconsideration of the palinuroid family Synaxidae (Crustacea, Decapoda), with a new member from the Upper Jurassic of southern Poland","authors":"René H. B. Fraaije, B. V. van Bakel, J. Jagt, M. Krobicki, À. Ossó, F. Palero, J. Wallaard","doi":"10.26879/1252","DOIUrl":"https://doi.org/10.26879/1252","url":null,"abstract":"Representatives of the family Synaxidae, commonly referred to as furry lobsters, are rare constituents of modern-day marine communities, while their fossil record suggests that they were more common in the past, in reefal settings during the Late Jurassic across Europe, from where at least three species have been recorded","PeriodicalId":56100,"journal":{"name":"Palaeontologia Electronica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69148328","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}
Predatory arthropods are known from terrestrial environments since the Silurian. Many of these animals have developed morphological and behavioral adaptations for living within soil environments. Ichnofossils are common in Paleozoic paleosols, yet most are of uncertain origin and may record a hidden diversity of predatory arthropods. These ichnofossils are especially important given the relatively poor preservation potential of soil invertebrates in the environments they inhabit. To better understand the morphology and uses of predatory soil arthropod burrows, laboratory experiments were conducted with centipedes, scorpions, whip scorpions, and spiders. Specimens were placed in sediment-filled terrariums for 1 to 36 weeks. The animals were observed continuously using digital recordings to monitor their behaviors and use of their burrows. Open burrows were cast and described qualitatively and quantitatively. The animals burrowed using various techniques including intrusion, compression, excavation, and backfilling. Some burrows were occupied for short intervals (2-5 days) before being abandoned, whereas others were permanently occupied. Burrows ranged from simple vertical shafts to complex, branching networks that served as temporary to permanent dwellings, and most were used as sites for ambush predation or as prey traps. The different predatory arthropods produced unique burrows that could be linked to specific behaviors. Distinct burrow features were linked to predatory activities including vertical shafts, multiple surface openings, branching tunnel networks, and expanded chambers. These data can be applied to continental ichnofossils to improve our understanding of the evolution of terrestrial predatory arthropods, their distribution through time, and interpretations of the paleoecology of ancient soil ecosystems. Daniel I. Hembree. Department of Earth and Planetary Sciences, University of Tennessee Knoxville, Knoxville, Tennessee 37996, USA, dhemre2@utk.edu
{"title":"Linking burrow morphology to the behaviors of predatory soil arthropods: Applications to continental ichnofossils","authors":"Daniel I. Hembree","doi":"10.26879/1257","DOIUrl":"https://doi.org/10.26879/1257","url":null,"abstract":"Predatory arthropods are known from terrestrial environments since the Silurian. Many of these animals have developed morphological and behavioral adaptations for living within soil environments. Ichnofossils are common in Paleozoic paleosols, yet most are of uncertain origin and may record a hidden diversity of predatory arthropods. These ichnofossils are especially important given the relatively poor preservation potential of soil invertebrates in the environments they inhabit. To better understand the morphology and uses of predatory soil arthropod burrows, laboratory experiments were conducted with centipedes, scorpions, whip scorpions, and spiders. Specimens were placed in sediment-filled terrariums for 1 to 36 weeks. The animals were observed continuously using digital recordings to monitor their behaviors and use of their burrows. Open burrows were cast and described qualitatively and quantitatively. The animals burrowed using various techniques including intrusion, compression, excavation, and backfilling. Some burrows were occupied for short intervals (2-5 days) before being abandoned, whereas others were permanently occupied. Burrows ranged from simple vertical shafts to complex, branching networks that served as temporary to permanent dwellings, and most were used as sites for ambush predation or as prey traps. The different predatory arthropods produced unique burrows that could be linked to specific behaviors. Distinct burrow features were linked to predatory activities including vertical shafts, multiple surface openings, branching tunnel networks, and expanded chambers. These data can be applied to continental ichnofossils to improve our understanding of the evolution of terrestrial predatory arthropods, their distribution through time, and interpretations of the paleoecology of ancient soil ecosystems. Daniel I. Hembree. Department of Earth and Planetary Sciences, University of Tennessee Knoxville, Knoxville, Tennessee 37996, USA, dhemre2@utk.edu","PeriodicalId":56100,"journal":{"name":"Palaeontologia Electronica","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69148446","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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