... be attributed to the genera Dicynodon and Lystrosaurus (Therapsida: Dicynodontia). The genus Dicynodon is represented in Scotland, ... espèces eurasiatiques attribuables aux genres Dicynodon et Lystrosaurus (Therapsida, Dicynodontia). Le genre Dicynodon est représenté en Ecosse, ...
Tópico(s): Plant Diversity and Evolution
1997 - Elsevier BV | Geobios
Ricardo Goñi, Francisco J. Goin,
... preserved remains ofupperpostcanines of Exaeretodon frenguelll Cabrera (Reptilia, Therapsida, Traversodontidae) allowedto recognize several dental specializations and to ...
Tópico(s): Amphibian and Reptile Biology
1990 - Asociación Paleontológica Argentina | Ameghiniana
Christian F. Kammerer, Kenneth D. Angielczyk, Jörg Fröbisch,
... Jörg Fröbisch. 2015. Redescription of the geikiid Pelanomodon (Therapsida, Dicynodontia), with a reconsideration of 'Propelanomodon'. Journal of ...
Tópico(s): Ichthyology and Marine Biology
2015 - Taylor & Francis | Journal of Vertebrate Paleontology
Savannah L. Olroyd, Christian A. Sidor,
... we propose homologies in these surface features across Therapsida. These features may serve as useful phylogenetic characters ... of homologous fossae and ridges across much of Therapsida.
Tópico(s): Paleontology and Evolutionary Biology
2022 - Taylor & Francis | Journal of Vertebrate Paleontology
Savannah L. Olroyd, Christian A. Sidor, Kenneth D. Angielczyk,
... New materials of the enigmatic dicynodont Abajudon kaayai (Therapsida, Anomodontia) from the lower Madumabisa Mudstone Formation, middle ...
Tópico(s): Ichthyology and Marine Biology
2017 - Taylor & Francis | Journal of Vertebrate Paleontology
Kenneth D. Angielczyk, P. John Hancox, Ali Nabavizadeh,
... A redescription of the Triassic kannemeyeriiform dicynodont Sangusaurus (Therapsida, Anomodontia), with an analysis of its feeding system; ...
Tópico(s): Ichthyology and Marine Biology
2017 - Taylor & Francis | Journal of Vertebrate Paleontology
Kenneth D. Angielczyk, Bruce S. Rubidge, Michael O. Day, Florence Lin,
... reevaluation of Brachyprosopus broomi and Chelydontops altidentalis, dicynodonts (Therapsida, Anomodontia) from the middle Permian Tapinocephalus Assemblage Zone ...
Tópico(s): Morphological variations and asymmetry
2016 - Taylor & Francis | Journal of Vertebrate Paleontology
Adam K. Huttenlocker, Christian A. Sidor,
... and C. A. Sidor. 2016. The first karenitid (Therapsida, Therocephalia) from the upper Permian of Gondwana and ...
Tópico(s): Paleontology and Stratigraphy of Fossils
2016 - Taylor & Francis | Journal of Vertebrate Paleontology
Susanna B. Kümmell, Eberhard Frey,
... in an approximately anterior direction. Most non-mammaliamorph Therapsida and probably some Mesozoic Mammaliamorpha had prehensile autopodia ... than in the pes. Prehensile autopodia of carnivorous Therapsida may have been utilized to hold prey while ...
Tópico(s): Morphological variations and asymmetry
2014 - Public Library of Science | PLoS ONE
Anteosaurs (Therapsida: Dinocephalia: Anteosauria) were the dominant terrestrial predators during the late Middle Permian period and are known from ...
Tópico(s): Turtle Biology and Conservation
2011 - Taylor & Francis | Journal of Systematic Palaeontology
Fernando Abdala, Bruce S. Rubidge, Juri van den Heever,
Abstract: The oldest records of mammal‐like therapsids in Laurasia are from the Ocher Complex of Russia and the Xidagou Formation of China, whereas in Gondwana they are restricted to the Eodicynodon Assemblage Zone, Beaufort Group of the South African Karoo. This fauna, which is relatively depauperate when compared with younger assemblage zones from the Karoo, shows an amazing diversity of therapsids including: dinocephalians (already represented by the carnivorous anteosaurids and the herbivorous ...
Tópico(s): Ichthyology and Marine Biology
2008 - Wiley | Palaeontology
Produção Nacional
Revisado por pares
Agustín G. Martinelli, José F. Bonaparte, César Leandro Schultz, Rogenio Rubert,
... the humerus of Irajatherium. Resumen. UN NUEVO TRITHELEDONTIDO (THERAPSIDA, EUCYNODONTIA) DEL TRIASICO TARDIO DE RIO GRANDE DO ...
Tópico(s): Evolution and Paleontology Studies
2005 - Asociación Paleontológica Argentina | Ameghiniana
The anatomy of the external naris and anterior palate is described in detail for Lycaenodon longiceps, a morphologically conservative member of the primitive therapsid clade Biarmosuchia. Therapsids are distinguished from pelycosaur-grade synapsids by numerous features of the naris and palate. As in most early therapsids, the septomaxilla in Lycaenodon consists of a short intranarial portion and a long, posterodorsal, facial process. The septomaxillary foramen is reduced to a small, longitudinal ...
Tópico(s): Evolution and Paleontology Studies
2003 - Cambridge University Press | Journal of Paleontology
The anatomy of the external naris and anterior palate is described in detail for Lycaenodon longiceps , a morphologically conservative member of the primitive therapsid clade Biarmosuchia. Therapsids are distinguished from pelycosaur-grade synapsids by numerous features of the naris and palate. As in most early therapsids, the septomaxilla in Lycaenodon consists of a short intranarial portion and a long, posterodorsal, facial process. The septomaxillary foramen is reduced to a small, longitudinal ...
Tópico(s): Ichthyology and Marine Biology
2003 - Cambridge University Press | Journal of Paleontology
... The postcranial skeleton of Kingoria nowacki (von Huene) (Therapsida: Dicynodontia) Get access GILLIAN M. KING GILLIAN M. ...
Tópico(s): Mollusks and Parasites Studies
1985 - Oxford University Press | Zoological Journal of the Linnean Society
... associação são aqui propostas: 1) Zona-associação de Therapsida: identificada nas áreas de Pinheiros e Xiniquá; 2) ... para os sedimentitos contendo a Zona-associação de Therapsida. A mesma comparação sugere que a Zona-associação ...
Tópico(s): Amphibian and Reptile Biology
1977 - | Pesquisas em Geociências
... R. 1968. The lower jaw of cynodonts (Reptilia, Therapsida) and the evolutionary origin of mammal-like adductor ... of the masticatory apparatus of two dicynodonts (Reptilia, Therapsida). Postilla (Peabody Mus. Nat. Hist., Yale Univ.) 109: ...
Tópico(s): Biomedical Text Mining and Ontologies
1969 - Wiley | Annals of the New York Academy of Sciences
... at least, to the dinocephalian group of the Therapsida.From the Beaufort beds, upper and lower, of ... reptiles are known, referred to the Cotylosauria and Therapsida.Because of the close affinity or identity of ...
Tópico(s): Amphibian and Reptile Biology
1912 - Wiley | Journal of Morphology
... Argentina. Hasta ahora, solo se sabe que los Therapsida componen la siguiente fauna: un Dicynodont de Kannemeyerid ...
Tópico(s): Ichthyology and Marine Biology
1966 - National University of Tucumán | Acta Geológica Lilloana
Christian A. Sidor, Arjan Mann,
... of these elements both within Gorgonopsia and across Therapsida.
Tópico(s): Cephalopods and Marine Biology
2024 - Elsevier BV | Comptes Rendus Palevol
Ricardo Goñi, Francisco J. Goin,
Most remarkable dental features of juvenile and adult specimens of Andescynodon mendozensis Bonaparte (Cynodontia, Traversodontidae) are described. The craneomandibular and dental features of representatives of this species share -with slight variations- a common structural pattern among Traversodontidae of Puestoviejan Reptile age-i.e., Andescynodon, Pascualgnathus and Rusconiodon-, An adjusted dental mechanism is inferred, with mainly orthal mandibular movements and an occlusal guide system represented ...
Tópico(s): Ichthyology and Marine Biology
1988 - Asociación Paleontológica Argentina | Ameghiniana
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
Kenneth D. Angielczyk, C. B. Cox,
Dicynodont therapsids were discovered in the Permian Usili Formation (Ruhuhu Basin, Tanzania) in the 1930s and in the Permian Ruhuhu Formation in the 1960s, with further collections being made in 2007, 2008, and 2012. Here we describe two fragmentary mandibles that represent a new morphotype of emydopoid dicynodont. One specimen was collected in the middle fossiliferous horizon of the Ruhuhu Formation, and the other originated in the overlying Usili Formation. Three synapomorphies support the placement ...
Tópico(s): Amphibian and Reptile Biology
2015 - Taylor & Francis | Journal of Vertebrate Paleontology
Luisa C. Pusch, Christian F. Kammerer, Jörg Fröbisch,
Abstract The origin of cynodonts, the group ancestral to and including mammals, is one of the major outstanding problems in therapsid evolution. One of the most troubling aspects of the cynodont fossil record is the lengthy Permian ghost lineage between the latest possible divergence from its sister group Therocephalia and the first appearance of definitive cynodonts in the late Permian. The absence of cynodonts and dominance of therocephalians in middle Permian strata has led some workers to argue ...
Tópico(s): Ichthyology and Marine Biology
2024 - Wiley | The Anatomical Record
Julien Benoît, Christian F. Kammerer, Kathleen N. Dollman, David P. Groenewald, Roger M. H. Smith,
Gorgonopsians 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. However, South African collections house three historically-collected gorgonopsian specimens listed as Early Triassic in age, based on their discovery at localities producing the index fossil Lystrosaurus. Initial reports suggested that these specimens had been reworked from underlying Permian strata, but ...
Tópico(s): Paleontology and Stratigraphy of Fossils
2024 - Elsevier BV | Palaeogeography Palaeoclimatology Palaeoecology
Christophe Hendrickx, Fernando Abdala, Florencia S. Filippini, Simon Wills, Roger Benson, Jonah N. Choiniere,
Abstract Gomphodonts form a Triassic radiation of small to medium‐bodied (<0.5–2.5 m in length) quadrupedal cynodonts characterized by labiolingually expanded gomphodont postcanines. They were the dominant cynodont group in Middle and Late Triassic ecosystems from the Southern Hemisphere and the first predominantly herbivorous cynodonts to evolve. Gomphodonts were also the first therapsids to develop hypsodonty and a dentition with complex occlusal patterns, and their highly diagnostic upper and lower ...
Tópico(s): Morphological variations and asymmetry
2024 - Wiley | The Anatomical Record
Luke A. Norton, Fernando Abdala, Julien Benoît,
Mammals are diagnosed by more than 30 osteological characters (e.g. squamosal-dentary jaw joint, three inner ear ossicles, etc.) that are readily preserved in the fossil record. However, it is the suite of physiological, soft tissue and behavioural characters (e.g. endothermy, hair, lactation, isocortex and parental care), the evolutionary origins of which have eluded scholars for decades, that most prominently distinguishes living mammals from other amniotes. Here, we review recent works that illustrate ...
Tópico(s): Ichthyology and Marine Biology
2023 - Royal Society | Philosophical Transactions of the Royal Society B Biological Sciences
Produção Nacional
Revisado por pares
Maurício Rodrigo Schmitt, Agustín G. Martinelli, João Felipe Leal Kaiuca, César Leandro Schultz, Marina Bento Soares,
Abstract In this contribution we describe a new genus and species of gomphodontosuchine cynodont from the Late Triassic Hyperodapedon Assemblage Zone (AZ) of the Santa Maria Supersequence of southern Brazil, based on material collected 20 years ago. The new taxon, Santagnathus mariensis gen. et sp. nov., is based on numerous cranial and postcranial remains, which altogether provide data on several parts of the skeleton. Santagnathus mariensis is closely related to Siriusgnathus niemeyerorum and Exaeretodon ...
Tópico(s): Evolution and Paleontology Studies
2023 - Wiley | The Anatomical Record
Julien Benoît, M. Nxumalo, Luke A. Norton, Vincent Fernández, Leandro C. Gaetano, Bruce S. Rubidge, Fernando Abdala,
Lumkuia fuzzi is a small non-mammalian cynodont from the Middle Triassic of South Africa. It has traditionally been phylogenetically identified as a basal Probainognathia, but some studies place it more basally as the sister-group to Eucynodontia. Lumkuia is known from a single specimen comprising a skull and partial skeleton. Only the skull has been thoroughly described. Here we use synchrotron X-ray computed tomography to describe the dental series and postcranial skeleton of Lumkuia. The shoulder ...
Tópico(s): Paleontology and Stratigraphy of Fossils
2022 - Elsevier BV | Journal of African Earth Sciences
Holger Preuschoft, Anna Krahl, Ingmar Werneburg,
Therapsids covered the entire spectrum of terrestrial locomotion from sprawling to parasagittal. Switching between sprawling and more erect locomotion may have been possible in earlier taxa. First, the axial skeleton shows little regionalization and allows lateral undulation, evolving then increasingly towards regionalization enabling dorsoventral swinging. During terrestrial locomotion, every step invokes a ground reaction force and functional loadings which the musculoskeletal system needs to ...
Tópico(s): Morphological variations and asymmetry
2022 - Pensoft Publishers | Vertebrate Zoology