Gorgonopsian therapsids (Nochnitsa gen. nov. and Viatkogorgon) from the Permian Kotelnich locality of Russia [PDF]
PeerJ, 2018 The early evolution of gorgonopsians is poorly understood. New material from the Kotelnich locality in Russia expands our knowledge of middle/earliest late Permian gorgonopsians from Laurasia.
Christian F. Kammerer, Vladimir Masyutin
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Phylogenetic analysis of cyrtocrinid crinoids and its influence on traditional classifications [PDF]
, 2016 The cyrtocrinids are a group of mostly Mesozoic articulated crinoids, with rare Cenozoic forms and only two extant taxa. A careful analysis of previous studies indicates that the systematic arrangement of cyrtocrinids is very weak and unsatisfactory ...
Manni, Riccardo Pier Celestino +2 more
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Bone microstructure and the evolution of growth patterns in Permo-Triassic therocephalians (Amniota, Therapsida) of South Africa [PDF]
, 2014 Therocephalians were a speciose clade of nonmammalian therapsids whose ecological diversity and survivorship of the end-Permian mass extinction offer the potential to investigate the evolution of growth patterns across the clade and their underlying ...
Adam K. Huttenlocker +1 more
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Antiquity of “Sail-Backed” Neural Spine Hyper-Elongation in Mammal Forerunners
Frontiers in Earth Science, 2020 Neural spine hyper-elongation in tetrapods is a unique morphological adaptation that creates a dorsal sail. While this extreme morphology has appeared several times in the evolutionary history of tetrapods, it was first experimented with by the non ...
Arjan Mann, Robert R. Reisz
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Revision of the Tanzanian dicynodont Dicynodon huenei (Therapsida: Anomodontia) from the Permian Usili Formation [PDF]
PeerJ, 2019 A single species of the dicynodontoid dicynodont Dicynodon is currently recognized from the late Permian Usili Formation of Tanzania: Dicynodon huenei Haughton, 1932. Restudy of the known Tanzanian materials of D.
Christian F. Kammerer
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A reassessment of the postcanine dentition and systematics of the tritylodontid Stereognathus (Cynodontia, Tritylodontidae, Mammaliamorpha), from the Middle Jurassic of the United Kingdom [PDF]
, 2017 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 ...
Brusatte, Stephen L. +4 more
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An early geikiid dicynodont from the Tropidostoma Assemblage Zone (late Permian) of South Africa [PDF]
PeerJ, 2017 Based on specimens previously identified as Tropidostoma, a new taxon of dicynodont (Bulbasaurus phylloxyron gen. et sp. nov.) from the Karoo Basin of South Africa is described.
Christian F. Kammerer, Roger M.H. Smith
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The phylogenetic position of Nyctiphruretus acudens, a parareptile from the Permian of Russia [PDF]
, 2010 Several specimens preserving the cranial structure of Nyctiphruretus acudens, a parareptile from the Permian Mezen River locality, Rusia, are described here for the first time.
SäiIä, L. K.
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Comparative osteohistology of hyperelongate neural spines in the Edaphosauridae (Amniota: Synapsida) [PDF]
Palaeontology, 2011 Abstract: The Permo‐Carboniferous Edaphosauridae is an extinct family of omnivorous and herbivorous basal synapsids in which a dorsal sail, comprised of a series of hyperelongate vertebral spinous processes (‘neural spines’), evolved convergently to their sphenacodontid contemporaries.
ADAM K. HUTTENLOCKER +2 more
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Gut microbiota as a trigger of accelerated directional adaptive evolution. Acquisition of herbivory in the context of extracellular vesicles, microRNAs and inter-kingdom crosstalk [PDF]
, 2017 According to a traditional view, the specific diet in vertebrates is one of the key factors structuring the composition of the gut microbiota. In this interpretation, the microbiota assumes a subordinate position, where the larger host shapes, through ...
Romano, Marco
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