Annals of the South African Museum, Volume 64The Museum, 1974 - Natural history |
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Page 13
... side to side . A low median ridge is present . Para - basisphenoid Although the basisphenoid cannot be distinguished from the parasphenoid by suture , the surface texture seems to indicate which part is dermal bone and which ...
... side to side . A low median ridge is present . Para - basisphenoid Although the basisphenoid cannot be distinguished from the parasphenoid by suture , the surface texture seems to indicate which part is dermal bone and which ...
Page 15
... side of the skull . The posterior part continues the braincase floor for- wards from the basioccipital although these two bones are separated by a narrow unossified zone . The sides of the braincase too are formed from the basisphenoid ...
... side of the skull . The posterior part continues the braincase floor for- wards from the basioccipital although these two bones are separated by a narrow unossified zone . The sides of the braincase too are formed from the basisphenoid ...
Page 185
... sides of the maxilla and dentary above and beneath the postcaniniform tooth row ( suggesting a mediad recession of the tooth row into the side of the face ) . We believe that this suite of common characters justifies the association of ...
... sides of the maxilla and dentary above and beneath the postcaniniform tooth row ( suggesting a mediad recession of the tooth row into the side of the face ) . We believe that this suite of common characters justifies the association of ...
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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Common terms and phrases
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