Annals of the South African Museum, Volume 64The Museum, 1974 - Natural history |
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Page 39
... primitive edaphosaurians , and the absence of Dimetrodon . Its basic characteristics relate to a food chain in which ... primitive nature of this group , which is an assem- blage of unspecialized sphenacodontids , grouped for convenience ...
... primitive edaphosaurians , and the absence of Dimetrodon . Its basic characteristics relate to a food chain in which ... primitive nature of this group , which is an assem- blage of unspecialized sphenacodontids , grouped for convenience ...
Page 225
... primitive type , of a sort from which , one may believe , later reptiles of almost any group might have been derived . Still more primitive are members of the family Limnoscelidae . The type form , Limnoscelis palustris ( Williston 1912 ...
... primitive type , of a sort from which , one may believe , later reptiles of almost any group might have been derived . Still more primitive are members of the family Limnoscelidae . The type form , Limnoscelis palustris ( Williston 1912 ...
Page 227
... primitive retention of an amphibious to aquatic habit ? Apart from the primitive limnoscelids , there are two positive examples of water - dwelling reptiles which are of such an early age that it seems unlikely that their pedigree ...
... primitive retention of an amphibious to aquatic habit ? Apart from the primitive limnoscelids , there are two positive examples of water - dwelling reptiles which are of such an early age that it seems unlikely that their pedigree ...
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