Annals of the South African Museum, Volume 64The Museum, 1974 - Natural history |
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Page 13
... ridge runs backwards across the lateral basioccipital surface from the level of the tubera and turns slightly dorsally just in front of the exoccipital , finally to be continued across the base of the latter bone right to the anterior ...
... ridge runs backwards across the lateral basioccipital surface from the level of the tubera and turns slightly dorsally just in front of the exoccipital , finally to be continued across the base of the latter bone right to the anterior ...
Page 16
... ridge which continues the line of a much less marked ridge on the supraoccipital . The posterior surface of the paroccipital process is smooth and bears a horizontal shelf along most of its ventral edge . The upper part of the distal ...
... ridge which continues the line of a much less marked ridge on the supraoccipital . The posterior surface of the paroccipital process is smooth and bears a horizontal shelf along most of its ventral edge . The upper part of the distal ...
Page 125
... ridge divides the bone into bilateral concave elements . The longitudinal ridge shows a pronounced midline groove or cleft extending the length of the bone . It is not possible to see whether this represents an entire or partial ...
... ridge divides the bone into bilateral concave elements . The longitudinal ridge shows a pronounced midline groove or cleft extending the length of the bone . It is not possible to see whether this represents an entire or partial ...
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