Annals of the South African Museum, Volume 64The Museum, 1974 - Natural history |
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Page 20
... position of the fenestra ovalis is typically reptilian and there is no development of a tube - like extension of the parasphenoid and otic bones carry- ing the fenestra laterally as in seymouriamorphs ( White 1939 ) . The lateral ...
... position of the fenestra ovalis is typically reptilian and there is no development of a tube - like extension of the parasphenoid and otic bones carry- ing the fenestra laterally as in seymouriamorphs ( White 1939 ) . The lateral ...
Page 22
... position can only be guessed , but in any case this represents a generally reptilian , post - quadrate position . The stapes itself is specialized from the presumed primitive condition by the absence of both stapedial foramen and dorsal ...
... position can only be guessed , but in any case this represents a generally reptilian , post - quadrate position . The stapes itself is specialized from the presumed primitive condition by the absence of both stapedial foramen and dorsal ...
Page 211
... position on the ventral face of the tibia , we find that the lateral part is in the proper position for a calca- neum , and that the resulting calcaneum is rather large . This is considerably advanced over the coelophysoid type and the ...
... position on the ventral face of the tibia , we find that the lateral part is in the proper position for a calca- neum , and that the resulting calcaneum is rather large . This is considerably advanced over the coelophysoid type and the ...
Contents
Scientific papers of L D Boonstra | 3 |
The braincase and associated structures of the cotylosaur reptile Procolophon triconiceps | 11 |
On the source of therapsids by E C OLSON | 47 |
Copyright | |
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Africa antérieure anteriorly astragalus basioccipital basisphenoid bone Boonstra bord braincase Broom calcaneum canal canine caniniform Chronofauna Cistecephaloides Cistecephalus complexe para-basisphénoïde condyle cranial crête cynodonts dentary dicynodonts Dimetrodon distal dorsal process edge Eodicynodon être exoccipital fauna fenestra ovalis fenêtre foramen Formation forms fossa fossil frontal genera genus Gondwana Gorgonops gorgonopsians H:B index Haughton Heterodontosaurus holotype Karroo Kawingasaurus kitchingi Kombuisia l'opisthotique late Cretaceous lateral lower jaw Lycorhinus Lycorhinus angustidens Lystrosaurus maxilla maxillaire medial Moschorhinidae moyennement multituberculate museau occipital Olson opisthotic ornithischian palate parietal paroccipital pelycosaurs Permian Permien supérieur Pisanosaurus postcanine postérieure posterior posteriorly postorbital pr.q.Pt premaxilla prémaxillaire premaxillary preparietal primitive processus carré Procolophon prootic prootique pterygoid ptérygoïde quadrate région reptiles Reptilia ridge Romer SAN DIEGO Sigogneau skull roof sousorbitaire specimen squamosal stapes supraoccipital surface suture tarsus teeth terrestrial therapsids Thulborn tibia Triassic upper horizontal groove ventral vertebrates vomer Watongia Whaitsiidae zone à Cistecephalus