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Journal article
Revision of Erpetosuchus (Archosauria: Pseudosuchia) and new erpetosuchid material from the Late Triassic ‘Elgin Reptile’ fauna based on μCT scanning techniques
The Late Triassic fauna of the Lossiemouth Sandstone Formation (LSF) from the Elgin area, Scotland, has been pivotal in expanding our understanding of Triassic terrestrial tetrapods. Frustratingly, due to their odd preservation, interpretations of the Elgin Triassic specimens have relied on destructive moulding techniques, which only provide incomplete, and potentially...Foffa , Davide ; Butler, Richard J ; Nesbitt, Sterling J ; Walsh, Stig ; Barrett, Paul M …
systematics, Erpetosuchidae , Erpetosuchus granti , Leptopleuron , and anatomy
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Journal article
New evidence for laurasian corystosperms: Umkomasia from the Upper Triassic of Northern China
Recent finds of remarkable fossil plants from the Upper Triassic Yangcaogou Formation in Liaoning Province, PR China include branched, cupule-bearing structures referable to the corystosperm ovulate organ Umkomasia. This material is described and assigned to the proposed new species Umkomasia asiatica. The collection includes numerous isolated cupules and fragments of...Shuqin, Zan ; Axsmith, Brian J ; Fraser, Nicholas C ; Fengxiang, Liu ; Dehe, Xing
Corystospermales, Umkomasia, pteridosperms, Triassic, Laurasia, and China
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Journal article
A new Neocalamites (Sphenophyta) with prickles and attached cones from the Upper Triassic of China.
Remains of the extinct sphenophyte (horsetail) Neocalamites are most widespread in the Middle–Upper Triassic and are typically represented by stem and leaf fragments. Here we report on spectacular new finds of Neocalamites from the Late Triassic Yangcaogou Formation in Liaoning Province, China that include bedding surfaces dominated by nearly complete...Zan, Shuqin ; Axsmith, Brian J ; Escapa, Ignacio ; Fraser, Nicholas C ; Fengxiang, Liu …
Sphenophyta, Horsetails, Neocalamites, Liaoning, Triassic, and China
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Journal article
New information on the protorosaurian reptile Macrocnemus fuyuanensis, Li et al., 2007, from the Middle/Upper Triassic of Yunnan, China
A new specimen of the protorosaur Macrocnemus fuyuanensis, from the Zhuganpo Member of the Falang Formation at Fuyuan (Yunnan Province, southwestern China), is described and compared with Macrocnemus bassanii. The new specimen is the first in the genus Macrocnemus that clearly shows details of the preorbital region of the skull....Jiang, Da-Yong ; Rieppel, Olivier ; Fraser, Nicholas C ; Motani, Ryosuke ; Hao, Wei-Cheng …
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Journal article
Use of fine-scale stratigraphy and chemostratigraphy to evaluate conditions of deposition and preservation of a Triassic lagerstätte, south-central Virginia
The rich, fossiliferous Triassic sediments exposed in the Virginia Solite Quarry include a 34-mm-thick “insect layer” that is notable for detailed preservation of soft-bodied invertebrate and vertebrate remains. We describe this unique Konservat-Lagerstätte and use sedimentologic and geochemical analyses to interpret the environmental conditions necessary to preserve such delicate fossils....Fraser, Nicholas C ; Liutkus, C M ; Beard, J S ; Ragland, P C
North America, Lacustrine, Newark Supergroup, Danville-Dan River Basin, rift basin, and insects
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Journal article
Tanystropheus cf. T. longobardicus from the Early Late Triassic of Guizhou Province, Southwestern China
The protorosaur Tanystropheus longobardicus is well known from the Middle Triassic of alpine Europe. It has been described on the basis of a number of specimens that apparently range from juvenile to adult. The largest specimens have a total body length of approximately 3 m. Here we report on the...Fraser, Nicholas C ; Rieppel, Olivier ; Jiang, Da-Yong ; Hao, Wei-Cheng ; Motani, Ryosuke …
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Journal article
A Triassic stem turtle with an edentulous beak
The early evolution of turtles continues to be a contentious issue in vertebrate palaeontology. Recent reports have suggested that they are diapsids1,2,3,4,5,6, but the position of turtles within Diapsida is controversial 7,8,9,10,11,12 and the sequence of acquisition of turtle synapomorphies remains unclear1,2,3. Here we describe a Triassic turtle from China...Li, Chun ; Fraser, Nicholas C ; Rieppel, Olivier ; Wu, Xiao-Chun
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Journal article
A legacy in fossils: a tribute to Stan(ley) Wood – Preface
Stan Wood had a gift for finding exceptional Early Carboniferous fossils. Among them are 32 type specimens. His discoveries significantly changed our understanding of the history of life on Earth. Many of the fossils he collected are on display in museums across the UK and the localities he discovered continue...Fraser, Nicholas C ; Smithson, Timothy R ; Clack, Jennifer A
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Journal article
Osteology of a new specimen of Macrocnemus aff. M. fuyuanensis (Archosauromorpha, Protorosauria) from the Middle Triassic of Europe: potential implications for species recognition and paleogeography of Tanystropheid Protorosaurs
Over the past two decades, a wealth of marine and terrestrial reptiles, including protorosaurian archosauromorphs, has been described from Triassic shales and limestone layers in southern China. Recovered from the eastern margin of the Tethys Ocean, these forms often show remarkable similarities to taxa that were previously known and described...Jaquier, Vivien P ; Fraser, Nicholas C ; Furrer, Heinz ; Scheyer, Torsten M
reptile, Tethys, interclavicle, Mesozoic, anatomy, Tanystropheidae, and China
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Journal article
A reassessment of the postcanine dentition and systematics of the tritylodontid Stereognathus (Cynodontia, Triltylodontidae, Mammaliamorpha) from the Middle Jurassic of the United Kingdom
Tritylodontidae was a successful advanced cynodont clade with a close relationship to mammals, but falling outside the clade Mammaliaformes. Stereognathus ooliticus was the first tritylodontid to be named and described in 1854, but since then no comprehensive description for this species has been produced. A second species, S. hebridicus, was...Panciroli, Elsa ; Walsh, Stig A ; Fraser, Nicholas C ; Brusatte, Stephen L ; Corfe, Ian