Recherche
Résultats de recherche
-
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
-
Lecture
Chip shops and drain cleaners: the weird world of the Triassic
The Triassic is notorious for some of the strangest vertebrates ever to have lived. Fossil assemblages around the world exhibit incredibly different types of fauna both in the terrestrial and marine realms. What brought about this remarkable diversity and why is it particularly relevant to our understanding of today’s terrestrial...Fraser, Nicholas C
-
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
-
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
-
Journal article
A new species of Coahomasuchus (Archosauria, Aetosauria) from the Upper Triassic Pekin Formation, Deep River Basin, North Carolina
We describe a new species of the aetosaur Coahomasuchus, C. chathamensis, based on an incomplete, but largely articulated, anterior portion of a skeleton recovered from a quarry in the Upper Triassic Pekin Formation of Chatham County, North Carolina. This is only the second documented occurrence of Coahomasuchus, with the other...Heckert, A B ; Fraser, Nicholas C ; Schneider, V P
PHYLOGENY, TIME-SCALE, BRAINCASE, OSTEOLOGY, STAGONOLEPIDIDAE, CRANIAL ANATOMY, PSEUDOSUCHIA, TIMESCALE, TEXAS, and REPTILIA
-
Journal article
A new diapsid from the Middle Triassic of southern China
The Middle and early Late Triassic of southern China is well known for a remarkable diversity of marine vertebrates, particularly reptiles, including an abundance of intriguing new forms (e.g., Jiang et al., 2005; Hu et al., 2011; Li et al., 2016). Here we describe a new diapsid from Yunnan Province....Chun, Li ; Fraser, Nicholas C ; Rieppel, Olivier ; Zhao, Li-Jun
-
Journal article
Viviparity in a Triassic marine archosauromorph reptile
Eggs or embryos have been reported in various groups of fossil reptiles, where viviparity is a common mode of reproduction in aquatic taxa such as the ichthyopterygians, some groups of sauropterygians, mosasauroids, some taxa of choristoderans and certain protorosaurs. Here, we describe a complete embryo of a marine protorosaur, based...Chun, Li ; Rieppel, Olivier ; Fraser, Nicholas C
-
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
-
Journal article
Phylogenetic and environmental context of a Tournaisian tetrapod fauna
The end-Devonian to mid-Mississippian time interval has long been known for its depauperate palaeontological record, especially for tetrapods. This interval encapsulates the time of increasing terrestriality among tetrapods, but only two Tournaisian localities previously produced tetrapod fossils. Here we describe five new Tournaisian tetrapods (Perittodus apsconditus, Koilops herma, Ossirarus kierani, Diploradus austiumensis and Aytonerpeton microps)...Clack, Jennifer A ; Bennett, Carys E ; Carpenter, David K ; Davies, Sarah J ; Fraser, Nicholas C …
-
Journal article
Palaeontology: a hook to the past
The poorly understood Triassic reptile Drepanosaurus is known for its excessively large claws. New discoveries demonstrate a remarkable modification of the bones in the wrist and forearm, a significant departure from the typical five-digit tetrapod limb.Fraser, Nicholas C
- « Précédente
- Suivante »
- 1
- 2
- 3
- 4
- 5