Results 21 to 30 of about 149 (96)

Palaeohistology of Macrospondylus bollensis (Crocodylomorpha: Thalattosuchia: Teleosauroidea) from the Posidonienschiefer Formation (Toarcian) of Germany, with insights into life history and ecology. [PDF]

open access: yesAnat Rec (Hoboken)
Abstract The Posidonienschiefer Formation of southern Germany has yielded an array of incredible fossil vertebrates. One of the best represented clades therein is Teleosauroidea, a successful thalattosuchian crocodylomorph group that dominated the coastlines.
Johnson MM   +3 more
europepmc   +2 more sources

Nasal turbinates of the dicynodont Kawingasaurus fossilis and the possible impact of the fossorial habitat on the evolution of endothermy

open access: yesJournal of Morphology, Volume 284, Issue 9, September 2023., 2023
Neutron tomography of a skull of the burrower Kawingasaurus fossilis (Synapsida, Dicynodontia) revealed a system of turbinal ridges for attachment of respiratory and olfactory turbinates including remains of turbinates in the nasal cavity that strongly resemble the mammalian bauplan.
Michael Laaß, Anders Kaestner
wiley   +1 more source

Overlooked or Unimportant? An Overview of the Coprolite Collections at the University of the Witwatersrand, Johannesburg, South Africa

open access: yesCurator: The Museum Journal, Volume 66, Issue 1, Page 149-164, January 2023., 2023
Abstract Fossilized feces, termed coprolites, provide unique information on digestive systems, diets, and ecosystems of extinct animals, and are potentially useful for palynology, biostratigraphy and preservation of animal and plant remains. Despite this broad utility, scientific enquiry into coprolites has been relatively sparse.
Bernhard Zipfel   +5 more
wiley   +1 more source

Feeding habits of the Middle Triassic pseudosuchian Batrachotomus kupferzellensis from Germany and palaeoecological implications for archosaurs

open access: yesPalaeontology, Volume 65, Issue 3, May/June 2022., 2022
Abstract Bite traces on fossil bones are key to deciphering feeding ecology and trophic interactions of vertebrate past ecosystems. However, similarities between traces produced by different carnivorous taxa with similar dentitions, and misidentifications due to equifinality, hinder confident identifications of the bite makers.
Eudald Mujal   +5 more
wiley   +1 more source

Developmental and Evolutionary Significance of the Zygomatic Bone

open access: yesThe Anatomical Record, Volume 299, Issue 12, Page 1616-1630, December 2016., 2016
ABSTRACT The zygomatic bone is derived evolutionarily from the orbital series. In most modern mammals the zygomatic bone forms a large part of the face and usually serves as a bridge that connects the facial skeleton to the neurocranium. Our aim is to provide information on the contribution of the zygomatic bone to variation in midfacial protrusion ...
Yann Heuzé   +4 more
wiley   +1 more source

THE MODE OF LIFE OF GORGONOPSIANS [PDF]

open access: yes, 1973
The gorgonopsians as typically developed were undoubtedly the dominant land carnivores of the Upper Permian and have been compared with the sabre-tooth cats of the Tertiary (Parrington, 1955, p. 7 and Kemp, 1969b, p. 321).
Cruickshank, A. R. I.
core  

Early synapsids neurosensory diversity revealed by CT and synchrotron scanning

open access: yesThe Anatomical Record, Volume 309, Issue 4, Page 912-929, April 2026.
Abstract Non‐mammaliaform synapsids (NMS) represent the closest relatives of today's mammals among the early amniotes. Exploring their brain and nervous system is key to understanding how mammals evolved. Here, using CT and Synchrotron scanning, we document for the first time three extreme cases of neurosensory and behavioral adaptations that probe ...
J. Benoit   +6 more
wiley   +1 more source

Did gorgonopsians survive the end-Permian "Great Dying"? : A re-appraisal of three gorgonopsian specimens (Therapsida, Theriodontia) reported from the Triassic Lystrosaurus declivis Assemblage Zone, Karoo Basin, South Africa

open access: yes
Altres ajuts: CERCA Programme/Generalitat de CatalunyaGorgonopsians were the dominant carnivores of the late Permian (Lopingian) and it is widely accepted that the clade became extinct at the Permian-Triassic boundary, almost 252 million years ago ...
Benoit, Julien   +4 more
core   +2 more sources

Osteohistological analysis of metatarsals reveals new information on pathology and life history of troodontids from the Campanian Dinosaur Park Formation, Alberta, Canada

open access: yesJournal of Anatomy, Volume 247, Issue 3-4, Page 736-764, September/October 2025.
A histological survey of troodontid metatarsals from the Dinosaur Park Formation (DPF) was conducted, revealing correlates for stresses in the troodontid arctometatarsus and providing the first histological assessment of pathologies for this taxon.
Christiana W. Garros   +3 more
wiley   +1 more source

ON THE CLASSIFICATION OF THE GORGONOPSIA [PDF]

open access: yes, 1968
The work here summarized represents an attempt to review the South African Gorgonopsians, an attempt based on a re-examination of the cranial anatomy of the type material and a comparison of all the specimens available.
Sigogneau, D.
core  

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