Annals of the South African Museum, Volume 56The Museum, 1971 - Natural history |
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Page 177
... basicranial axis of all therapsids , Dicynodon being representative of the group . These elements were basioccipital , basisphenoid and presphenoid . In 1927 he pointed out that certain mammal groups had only three elements in the ...
... basicranial axis of all therapsids , Dicynodon being representative of the group . These elements were basioccipital , basisphenoid and presphenoid . In 1927 he pointed out that certain mammal groups had only three elements in the ...
Page 261
... BASICRANIAL AXIS Four elements have been identified in the basicranial axis of Lystrosaurus , namely , basioccipital , basisphenoid , presphenoid and mesethmoid . Further- more , it is concluded that a further ossification , the ...
... BASICRANIAL AXIS Four elements have been identified in the basicranial axis of Lystrosaurus , namely , basioccipital , basisphenoid , presphenoid and mesethmoid . Further- more , it is concluded that a further ossification , the ...
Page 262
... basicranial axis of all vertebrates is incorrect , and that the four ossifications which appear to be present in the therapsid basicranial axis were inherited by certain mammals , such as those described by De Beer & Woodger ( 1930 ) ...
... basicranial axis of all vertebrates is incorrect , and that the four ossifications which appear to be present in the therapsid basicranial axis were inherited by certain mammals , such as those described by De Beer & Woodger ( 1930 ) ...
Contents
BEAUFORT BEDS OF THE KAROO | 2 |
A review of previous work | 22 |
The nonreptilian elements in the fauna and the flora | 29 |
Copyright | |
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animals Anteosaurus anteriorly articular Baard's Quarry basicranial axis basioccipital basisphenoid bone Boné & Singer Boonstra Bovidae Bradysaurus braincase Broom Bushmen Cape condyle cranial Daptocephalus dentary deposits described Dicynodon testudirostris dicynodonts Dinocephalia dinocephalian Emydops Equus Ewer external adductor muscle Family fenestra foramen fossa fossils frontal frontonasal ridge genera genus Gorgonopsia groove groups Haughton Hendey Hipparion horizon horn cores Incertae sedis inserted interpterygoidal Jonkeria Karoo Kingoria Kleinzee Langebaanweg Langebaanweg fauna Lystrosaurus Lystrosaurus declivis mammalian mammals mandible masticatory cycle maxilla median Moschops murrayi musculature nasal Nharo obliquus capitis occipital Olduvai orbitosphenoid ossification palatal rim palatine pareiasaurs Permian Pleistocene Pliocene posterior posteriorly premaxilla present presphenoid Pristerodon prootic pterygoid quadrate Quarry assemblage referred region represented reptiles septum shoreline skull roof snout South African Museum species specimens squamosal Struthiocephalus surface Tapinocephalus Tapinocephalus zone teeth therapsids therocephalian Titanosuchus trap tusk Varswater bed vertebrates