... the more primitive therapsids, the Gorgonopsia and the Therocephalia, which lie close to the main line of ... so prepared. In the Gorgonopsia and in the Therocephalia all the teeth were replaced at least once. ... for the upper canines. In the most primitive Therocephalia, and in the Gorgonopsia, there is only one ... this limited tooth replacement the Gorgonopsia and the Therocephalia show an analogy with the mammals. The number ...
Tópico(s): dental development and anomalies
1956 - Royal Society | Philosophical transactions of the Royal Society of London. Series B, Biological sciences
Luisa C. Pusch, Jasper Ponstein, Christian F. Kammerer, Jörg Fröbisch,
Therocephalia is one of the major therapsid clades and ranges from the middle Permian to Middle Triassic. ... a cochlear recess, so far only known within Therocephalia from the highly specialized Triassic taxon Microgomphodon. We ... complex history of character acquisition and loss in Therocephalia, comparable to that of cynodonts.
Tópico(s): Morphological variations and asymmetry
2020 - Frontiers Media | Frontiers in Ecology and Evolution
Luisa C. Pusch, Christian F. Kammerer, Jörg Fröbisch,
... the latest possible divergence from its sister group Therocephalia and the first appearance of definitive cynodonts in ... analyses support the reciprocal monophyly of Cynodontia and Therocephalia. Furthermore, although a fundamental dichotomy in the derived ... re‐evaluation of the phylogeny of Eutheriodontia (Cynodontia + Therocephalia) and an assessment of character evolution within the ...
Tópico(s): Ichthyology and Marine Biology
2024 - Wiley | The Anatomical Record
Wolfgang Maier, Juri van den Heever,
... that impedance matching was still very ineffective in Therocephalia when compared to extant mammals. In dieser Arbeit ...
Tópico(s): Ichthyology and Marine Biology
2008 - Wiley | Fossil Record
Adam K. Huttenlocker, Christian A. Sidor, Roger M. H. Smith,
... documented occurrence of this taxon) within a monophyletic Therocephalia. Inclusion of new postcranial characters strengthens support of ...
Tópico(s): Ichthyology and Marine Biology
2011 - Taylor & Francis | Journal of Vertebrate Paleontology
Adam K. Huttenlocker, Christian A. Sidor,
... C. A. Sidor. 2016. The first karenitid (Therapsida, Therocephalia) from the upper Permian of Gondwana and the ...
Tópico(s): Paleontology and Stratigraphy of Fossils
2016 - Taylor & Francis | Journal of Vertebrate Paleontology
Henrik Richard Grunert, Neil Brocklehurst, Jörg Fröbisch,
... the patterns of diversity and disparity in the Therocephalia, a diverse lineage of amniotes that survived two ...
Tópico(s): Paleontology and Stratigraphy of Fossils
2019 - Nature Portfolio | Scientific Reports
Adam K. Huttenlocker, Christian A. Sidor, Kenneth D. Angielczyk,
A new therocephalian therapsid, Ichibengops munyamadziensis, gen. et sp. nov., is described on the basis of two partial skulls from the upper Permian (Wuchiapingian) upper Madumabisa Mudstone Formation of the Luangwa Basin, Zambia. The specimens offer insights into the diversity of therocephalians in a poorly sampled region, preserving unique maxillary structures, dental morphology that is intermediate between basal therocephalians and eutherocephalians, and a maxillovomerine bridge forming an incipient ...
Tópico(s): Ichthyology and Marine Biology
2015 - Taylor & Francis | Journal of Vertebrate Paleontology
... the time when the great suborders Gorgonopsia and Therocephalia can usefully be subdivided into smaller groups whose ...
Tópico(s): Evolution and Paleontology Studies
1931 - Zoological Society of London | Proceedings of the Zoological Society of London
... sections of skulls of four therapsid suborders, Gorgonopsia, Therocephalia, Anomodontia, and Cynodontia, have provided a basis for ...
Tópico(s): Evolution and Paleontology Studies
1944 - Geological Society of America | Geological Society of America Special Papers
... of Dicynodon , and of the carnivorous gorgonopsids and Therocephalia which preyed on it, at the end of ...
Tópico(s): Ichthyology and Marine Biology
1957 - Royal Society | Philosophical transactions of the Royal Society of London. Series B, Biological sciences
The first-known mammal-like reptiles were discovered by Andrew Geddes Bain (1845) in the Karroo Beds of South Africa about a hundred years ago. The large majority of the species he discovered belong to the Anomodont group, of which Dicynodon is the best-known genus—characterized by having a tortoise-like beak with or without permanent-growing, large, upper canines. Carnivorous types are very much rarer than the vegetarian Anomodonts, and Bain was successful in getting only comparatively few specimens, ...
Tópico(s): Wildlife Ecology and Conservation
1936 - Royal Society | Philosophical transactions of the Royal Society of London. Series B, Biological sciences
... retained a largely reptilian thigh musculature, but the therocephalia and scaloposaurid bauriamorphs appear to have achieved a ...
Tópico(s): Ichthyology and Marine Biology
1961 - Zoological Society of London | Proceedings of the Zoological Society of London
... like reptile Cynario- gnathus platyrhinus (Family Pristerognathidae, Infraorder Therocephalia) from the Middle Permian of South Africa shows ...
Tópico(s): Ichthyology and Marine Biology
1967 - Cambridge University Press | Journal of Paleontology
... whole is considered. They are compared with the Therocephalia and it is concluded that their functional organization, ...
Tópico(s): Marine and fisheries research
1969 - Royal Society | Philosophical transactions of the Royal Society of London. Series B, Biological sciences
The conclusion reached in this paper is that the cynodonts evolved from a therocephalian ancestor, and that among the known therocephalians, the whaitsiids are the forms closest to cynodont ancestry. Certain superficial specializations of the feeding apparatus, however, debar the known whaitsiids from a position of actual cynodont ancestry. The evidence for this thesis lies in new detailed morphology of certain points of the whaitsiid skull, along with reassessment of much of the established cranial ...
Tópico(s): Paleontology and Evolutionary Biology
1972 - Royal Society | Philosophical transactions of the Royal Society of London. Series B, Biological sciences
... to date. The analysis supports the hypothesis that Therocephalia represents the monophyletic sister taxon to Cynodontia, with ...
Tópico(s): Marine and fisheries research
2009 - Oxford University Press | Zoological Journal of the Linnean Society
Wolfgang Maier, Juri van den Heever,
Tópico(s): Marine Biology and Ecology Research
2002 - Wiley | Fossil Record
Tópico(s): Marine Biology and Ecology Research
2008 - Pleiades Publishing | Paleontological Journal
... Mammaliaformes. The cladistic analysis also indicates paraphyly for Therocephalia, with the whaitsiid Theriognathus identified as sister taxon ...
Tópico(s): Ichthyology and Marine Biology
2007 - Wiley | Palaeontology
Marianne Pearson, Roger Benson, Paul Upchurch, Jörg Fröbisch, Christian F. Kammerer,
... Diadectomorpha, Edaphosauridae, Pareiasauria, Poposauroidea, Procolophonoidea, Rhynchosauria, Silesauridae and Therocephalia is used to analyse palaeodiversity from the Late ...
Tópico(s): Ichthyology and Marine Biology
2012 - Elsevier BV | Palaeogeography Palaeoclimatology Palaeoecology
Trond Sigurdsen, Adam K. Huttenlocker, Sean P. Modesto, Timothy B. Rowe, R Damiani,
... and 131 morphological characters supports the monophyly of Therocephalia, and there is evidence for a monophyletic Lycideopidae ...
Tópico(s): Evolution and Paleontology Studies
2012 - Taylor & Francis | Journal of Vertebrate Paleontology
... stem-group birds) and Dinocephalia, Dicynodontia, Gorgonopsida and Therocephalia (all stem-group mammals). The Dromaeosauridae are the ...
Tópico(s): Evolution and Paleontology Studies
1993 - Wiley | Cladistics
... stem-group birds) and Dinocephalia, Dicynodontia, Gorgonopsida and Therocephalia (all stem-group mammals). The Dromaeosauridae are the ...
Tópico(s): Evolution and Paleontology Studies
1993 - Wiley | Cladistics
Fernando Abdala, Tea Jashashvili, Bruce S. Rubidge, Juri van den Heever,
An exceptionally well-preserved specimen of the bauriid therocephalian Microgomphodon oligocynus from the Burgersdorp Formation (Early-Middle Triassic, Cynognathus Assemblage Zone) of the South African Karoo is described. In addition, a taxonomic revision of bauriid therocephalians from southern Africa, based on firsthand examination of almost all know specimens, is presented. Microgomphodon oligocynus and Bauria cynops are recognized as the only valid species of southern African bauriids. Microgomphodon ...
Tópico(s): Morphological variations and asymmetry
2013 - Springer Nature (Netherlands) | Vertebrate paleobiology and paleoanthroplogy series/Vertebrate paleobiology and paleoanthropology series
Julien Benoît, Paul R. Manger, Vincent Fernández, Bruce S. Rubidge,
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. These bosses, the earliest of this nature in a eutheriodont, potentially make C. dejageri a key species for understanding the evolutionary origins of sexually selective behaviours (intraspecific competition, ritualized sexual and intimidation displays) associated with cranial outgrowths at the root of the clade that ...
Tópico(s): Morphological variations and asymmetry
2016 - Public Library of Science | PLoS ONE
Julien Benoît, Luke A. Norton, Paul R. Manger, Bruce S. Rubidge,
Euchambersia mirabilis is an iconic species of Permo-Triassic therapsid because of its unusually large external maxillary fossa linked through a sulcus to a ridged canine. This anatomy led to the commonly accepted conclusion that the large fossa accommodated a venom gland. However, this hypothesis remains untested so far. Here, we conducted a μCT scan assisted reappraisal of the envenoming capacity of Euchambersia, with a special focus on the anatomy of the maxillary fossa and canines. This study ...
Tópico(s): Yersinia bacterium, plague, ectoparasites research
2017 - Public Library of Science | PLoS ONE
Adam K. Huttenlocker, Roger M. H. Smith,
Two new species of therocephalian therapsids are described from the upper Permian Teekloof Formation of the Karoo Basin, South Africa. They include two specimens of a whaitsiid, Microwhaitsia mendrezi gen. et sp. nov., and a single, small whaitsioid Ophidostoma tatarinovi gen. et sp. nov., which preserves a combination of primitive and apomorphic features. A phylogenetic analysis of 56 therapsid taxa and 136 craniodental and postcranial characters places the new taxa within the monophyletic sister ...
Tópico(s): Marine and environmental studies
2017 - PeerJ, Inc. | PeerJ
Gabriela Fontanarrosa, Fernando Abdala, Susanna B. Kümmell, Robert W. Gess,
We present a comprehensive qualitative and quantitative study of the manus of a new therocephalian specimen referable to Tetracynodon from the Early Triassic of South Africa. We examined 18 specimens, representing at least 12 genera, including basal therocephalians (Lycosuchidae and Scylacosauridae) and eutherocephalians (Akidnognathidae, Whaitsioidea and Baurioidea). A temporal range of 23 million years through the Permo-Triassic (Wordian to Anisian) was surveyed. A principal component analysis of ...
Tópico(s): Evolution and Paleontology Studies
2018 - Taylor & Francis | Journal of Vertebrate Paleontology
Yu. A. Suchkova, В. К. Голубев,
Tópico(s): Marine Biology and Ecology Research
2019 - Pleiades Publishing | Paleontological Journal