Annals of the South African Museum, Volume 31South African Museum, 1950 - Natual history |
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Page 13
... prevomers are slightly emarginate . The prevomers differ somewhat in size in the different forms , so that the " comma - shaped " vacuities which housed the choanae vary in size ; in some forms the lateral portions of the prevomers do ...
... prevomers are slightly emarginate . The prevomers differ somewhat in size in the different forms , so that the " comma - shaped " vacuities which housed the choanae vary in size ; in some forms the lateral portions of the prevomers do ...
Page 213
... prevomers , and these seem to invalidate Watson's second conclusion . In all the Gorgonopsians I have studied there is no evidence , whatsoever , of a tendency for the original slender rod - like epipterygoid to become widened and ...
... prevomers , and these seem to invalidate Watson's second conclusion . In all the Gorgonopsians I have studied there is no evidence , whatsoever , of a tendency for the original slender rod - like epipterygoid to become widened and ...
Page 244
... prevomers still , however , occupies a plane much dorsal to the alveolar maxillary border . Continuing in posterior direction the prevomers again become narrow , and lateral to them lie the two internal nares ; the prevomers curve round ...
... prevomers still , however , occupies a plane much dorsal to the alveolar maxillary border . Continuing in posterior direction the prevomers again become narrow , and lateral to them lie the two internal nares ; the prevomers curve round ...
Contents
II | 5 |
Pareiasaurian skulls IV V Pareiasaur teeth | 8 |
Bradysaurus baini | 18 |
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Aelurognathus Agulhas Bank Albian anteriorly Anthodon appear B.Oc B.Sph basioccipital basisphenoid beds bone Bradysaurus brain-case Broom canine Cape Province centrum cervicals collected concave convex costae Cretaceous Cynodonts dental formula described distal ectopterygoids epipterygoid fenestra ovalis figured flank forms fossils genera genotype genus glauconite Gorgonops Gorgonopsians groove Haughton Hipposaurus Hoepen holotype incisors intercentrum Interorbital Kitchin Krauss L. W. Collet Lateral view Length from premaxilla lower jaw Lycaenops maxilla median Mfongosi microdon molars narrow Neocomian nodules occiput orbit ornamented P.Orb palate palatines Pareiasaurus parietal paroccipital phosphate pineal foramen plate Pongola Pongola River posterior border posteriorly premaxilla preserved prevomers pro-otic Pter pterygoid pterygoid flanges quadrate ribs ridge shells side skull snout South African Museum species specimens squamosal structure surface suture teeth TEXT-FIG Therapsids Therocephalians tigriceps transverse Trigonia tubera Uitenhage umbo upper vacuity valve ventral margin Ventral view vertebrae Watson Whaitsids width zone Zululand