Annals of the South African Museum, Volume 64The Museum, 1974 - Natural history |
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Page 20
... present study has upon this problem . Middle ear The 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 ...
... present study has upon this problem . Middle ear The 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 ...
Page 29
... present . Its height is estimated as 20 to 25 mm , somewhat more than twice the height of the longest postcanine . Skull length is estimated to have been about 24 to 26 cm on the assumption that proportions were more or less those of ...
... present . Its height is estimated as 20 to 25 mm , somewhat more than twice the height of the longest postcanine . Skull length is estimated to have been about 24 to 26 cm on the assumption that proportions were more or less those of ...
Page 39
... present , Aerosaurus , very close to Varanops , is present in New Mexico , and in Colorado a haptodontine , Cutleria , has been found ( Lewis & Vaughn 1965 ) . The youngest representation of this chronofauna is in the Chickasha ...
... present , Aerosaurus , very close to Varanops , is present in New Mexico , and in Colorado a haptodontine , Cutleria , has been found ( Lewis & Vaughn 1965 ) . The youngest representation of this chronofauna is in the Chickasha ...
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