Early synapsids neurosensory diversity revealed by CT and synchrotron scanning. [PDF]
Anat Rec (Hoboken)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 ...
Benoit J +6 more
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The osteohistology of gorgonopsian therapsids and implications for Permo-Triassic theriodont growth. [PDF]
J AnatPermian gorgonopsian therapists had rapid, annually interrupted growth and show longer lifespans than early Triassic therapists. Abstract During the Late Permian, saber‐toothed gorgonopsian therapsids were the dominant terrestrial predators, playing crucial roles as apex predators alongside therocephalian therapsids within Permian terrestrial ...
Botha J.
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Review of the tetrapod skull-neck boundary: implications for the evolution of the atlas-axis complex. [PDF]
Biol Rev Camb Philos SocABSTRACT This review describes variation in modern and fossil occiput–atlas–axis complex anatomy of total group Tetrapoda with the aim of documenting the range of structural variation throughout their evolutionary history to establish grounds for comparison of the complex between tetrapod clades.
Korneisel DE, Maddin HC.
europepmc +2 more sources
Cranial Bosses of Choerosaurus dejageri (Therapsida, Therocephalia): Earliest Evidence of Cranial Display Structures in Eutheriodonts. [PDF]
PLoS ONE, 2016 Choerosaurus dejageri, a non-mammalian eutheriodont therapsid from the South African late Permian (~259 Ma), has conspicuous hemispheric cranial bosses on the maxilla and the mandible.
Julien Benoit +3 more
doaj +2 more sources
A Carboniferous synapsid with caniniform teeth and a reappraisal of mandibular size-shape heterodonty in the origin of mammals. [PDF]
R Soc Open Sci, 2021 Heterodonty is a hallmark of early mammal evolution that originated among the non-mammalian therapsids by the Middle Permian. Nonetheless, the early evolution of heterodonty in basal synapsids is poorly understood, especially in the mandibular dentition.
Huttenlocker AK +3 more
europepmc +5 more sources
VIII. On the structure of the mammal-like reptiles of the sub-order Gorgonopsia [PDF]
Philosophical Transactions of the Royal Society of London Series B Containing Papers of A Biological Character, 1930 Over eighty years ago reptiles with a mammal-like dentition were first discovered in South Africa by Andrew Geddes Bain, and specimens were sent to England in 1853. One of these, a fairly well preserved and nearly complete skull, was described by Owen in 1860 under the name Galesaurus planiceps .
exaly +2 more sources
Tooth replacement patterns in the Early Triassic epicynodont Galesaurus planiceps (Therapsida, Cynodontia). [PDF]
PLoS One, 2020 Sixteen specimens of the Early Triassic cynodont Galesaurus planiceps (including eight that were scanned using micro-computed tomography) representing different ontogenetic stages were assembled to study the dental replacement in the species.
Norton LA +3 more
europepmc +3 more sources
On the Gorgonopsia, a Suborder of the Mammal‐like Reptiles
Proceedings of the Zoological Society of London, 1913 (Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
exaly +4 more sources
Comptes Rendus - PalevolUnderstanding the origin and evolution of the unique mammalian respiratory system hinges on our knowledge of the osteological changes in the pectoral apparatus (i.e., scapulocoracoid, cleithrum, clavicle, interclavicle, sternum) throughout the synapsid fossil record.
Christian A Sidor, Arjan Mann
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Investigation of a bone lesion in a gorgonopsian (Synapsida) from the Permian of Zambia and periosteal reactions in fossil non-mammalian tetrapods [PDF]
Philosophical Transactions of the Royal Society B: Biological Sciences, 2020 Christian A Sidor, Adam K Huttenlocker
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