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Journal article
The age and formation mechanisms of Late Triassic fissure deposits, Gloucestershire, England: Comments on Mussini, G. et al. (2020). Anatomy of a Late Triassic Bristol fissure: Tytherington fissure 2
In the Late Triassic the landscape NE of present-day Bristol, SW England was dominated by Carboniferous Limestone ridges and cuestas that became progressively buried by continental Mercia Mudstones and finally inundated during the Rhaetian marine transgression. Mussini et al. (2020) adopt the assertions of earlier collaborators back to Whiteside and Marshall (2008) that terrestrial... -
Journal article
New species of mammaliaform and the cranium of Borealestes (Mammaliformes: Docodonta) from the Middle Jurassic of the British Isles
Docodonta are one of the earliest diverging groups of mammaliaforms, and their morphology provides key information on the transition between non-mammalian cynodonts and Mammalia. We describe the partial skulls of two docodontans Borealestes serendipitus and Borealestes cuillinensis sp. nov. from the Kilmaluag Formation (Middle Jurassic: Bathonian), Isle of Skye, Scotland....Panciroli, Elsa ; Benson, Roger B J ; Fernandez, Vincent ; Butler, Richard J ; Fraser, Nicholas C …
mammals, Scotland, Jurassic, Bathonian, Mesozoic, and Isle of Skye
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Journal article
Postcrania of Borealestes (Mammaliformes, Docodonta) and the emergence of ecomorphological diversity in early mammals
The Middle Jurassic witnessed the early diversification of mammal groups, including the stem-mammalian clade, Docodonta. Recent discoveries in China indicate docodontans exhibited ecomorphological diversity akin to small-bodied mammals living >100 million years later, in the Cenozoic. Our understanding of the emergence of this ecological diversity is hindered by a lack...Panciroli, Elsa ; Benson, Roger B J ; Fernandez, Vincent ; Humpage, Matthew ; Martín‐Serra, Alberto …
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Journal article
The skeletal anatomy of the Triassic protorosaur Dinocephalosaurus orientalis Li, from the Middle Triassic of Guizhou Province, southern China
The first protorosaur from the Middle Triassic of China, Dinocephalosaurus orientalis Li is known from two specimens: the holotype (an isolated skull in association with the first three cervical vertebrae), and a referred specimen (an almost complete, associated and partially articulated specimen lacking the tail). This material is here described...Rieppel, Olivier ; Li, Chun ; Fraser, Nicholas C
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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 …