Temat: Karoo - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Nycteroleter affinities of a Permian parareptile from the South African Karoo Basin
Autorzy:: Cisneros, J C
Tsuji, L.A.
Powiązania:: https://bibliotekanauki.pl/articles/23121.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Karoo Basin
paleontology
Permian
parareptile
Tapinocephalus
South Africa
Middle Permian
Opis:: The Middle Permian Tapinocephalus Assemblage Zone in South Africa has produced a rich record of tetrapods dominated by dinocephalian therapsids and pareiasaurid parareptiles. In this study we reassess the affinities of a specimen from this horizon previously identified as a procolophonoid and provide evidence that it is instead referable to a nycteroleter parareptile, an identification that is more compatible with the age of this fossil. Accordingly, this specimen represents the first record of a nycteroleter in Gondwana.
Źródło:: Acta Palaeontologica Polonica; 2009, 54, 1; 165-169
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: New features of the snout and orbit of a therocephalian therapsid from South Africa
Autorzy:: Sigurdsen, T
Powiązania:: https://bibliotekanauki.pl/articles/21325.pdf
Data publikacji:: 2006
Wydawca:: Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:: Akidnognathidae
dentition
Karoo basin
Therocephalia
therocephalian therapsid
South Africa
tooth
Therapsida
Synapsida
paleontology
Opis:: I describe the anterior part of the externally poorly preserved skull of a therocephalian from the Karoo Basin in South Africa, using the method of serial grinding. The skull is incomplete, and its estimated length in life is 130 mm. The skull can be assigned to the Akidnognathidae with some confidence. The stratigraphic age of the specimen and its locality are not known, but the surrounding sediment suggests that it may be from the Upper Permian Dicynodon Assemblage Zone. It has five or six postcanine teeth, and a poorly developed crista choanalis. The sinuses and canals of the snout are recognized, and it is believed that the sinus positioned posteriorly in the snout (posterior maxillary sinus) is homologous with the maxillary sinus of anomodonts and cynodonts. It also shows similarities to the infraorbital canal of early mammals, such as Morganucodon. An anteriorly positioned sinus (anterior maxillary sinus), situated directly behind the canine root, is homologized with the maxillary sinus of gorgonopsians. In addition, I identify the previously undescribed canal (designated anterior maxillary canal), leading from the anterior maxillary sinus antero−dorsally. No evidence for maxilloturbinals was found in contrast to the condition known in the primitive therocephalian Glanosuchus
Źródło:: Acta Palaeontologica Polonica; 2006, 51, 1
0567-7920
Pojawia się w:: Acta Palaeontologica Polonica
Dostawca treści:: Biblioteka Nauki

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