Annals of the South African Museum, Volume 59South African Museum, 1971 - Natural history |
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Page 20
... squamosal . The lower border or zygomatic arch is mostly formed by the jugal and squamosal in varying proportions , but in all the three suborders there are forms in which the quadratojugal enters the lower border of the fenestra . Is ...
... squamosal . The lower border or zygomatic arch is mostly formed by the jugal and squamosal in varying proportions , but in all the three suborders there are forms in which the quadratojugal enters the lower border of the fenestra . Is ...
Page 22
... ( squamosal ) . The fenestra thus seems to have lost its primary function ! The forward position of the lower jaw articulation with the concomitant great depth of the squamosal arch greatly lengthens the muscle mass and this increased ...
... ( squamosal ) . The fenestra thus seems to have lost its primary function ! The forward position of the lower jaw articulation with the concomitant great depth of the squamosal arch greatly lengthens the muscle mass and this increased ...
Page 23
... squamosal . The greatest modification is seen in the structure of the squamosal . In the zygoma the squamosal , originally lying in a vertical plane , is bent down laterally to lie in a horizontal plane with the original dorsal edge now ...
... squamosal . The greatest modification is seen in the structure of the squamosal . In the zygoma the squamosal , originally lying in a vertical plane , is bent down laterally to lie in a horizontal plane with the original dorsal edge now ...
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Common terms and phrases
Adam & Rees Africa Agriotherium ant.post Ant.transv anteriorly bicornis biserial bones burnupi CALIFOR canines Cape capensis Ceratotherium praecox coast cusps dentary dentition developed diameter Dicynodontia Dinocephalia distal dorsal dorsal arms early therapsids ectoloph elongated Endothiodontidae enlarged female figs foramen fossil genus Gorgonopsia Hemisepius HENDEY hieronis holotype Hooijer Hydrurga incisors Indarctos inner cone joubini Langebaanweg larvae lateral Leptonychotes Lobodon male mantle margin Massy median medisinus molars monachine Monachus Natal ossified outer cone papillata Parapapio pelycosaurs Permian phocids phragmocone Phthinosuchus pigmentation pinniped Pleistocene Pliocene Post.transv postcanines posteriorly postorbital premaxilla primitive Prionodelphis Protective membranes protocone proximal quadriserial Relative dimensions Robson rows seals Sepia Sepiidae shell simoniana simum skull South African Museum species specimen sphenacodonts squamosal standard length striated zone subequal suckers surface TABLE teeth temporal fenestra Tentacular club therapsids Therocephalia Titanosuchidae Trachurus transverse typica upper ventral arm ventral views vermiculata width