Annals of the South African Museum, Volume 28 |
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Page 189
Ornamentation of prominent ribs and faint concentric striations ; anterior to the umbones is a ribbed area on which the ribs extend obliquely backwards ; posterior to the umbones are ribs extending obliquely backwards and more or less ...
Ornamentation of prominent ribs and faint concentric striations ; anterior to the umbones is a ribbed area on which the ribs extend obliquely backwards ; posterior to the umbones are ribs extending obliquely backwards and more or less ...
Page 349
The adductor ridges form an intact Y ; the anterior branch has a strong , prominent , preaxially directed , “ internal trochanter ” ; the posterior branch has an “ external trochanter , ” not distinct from the posterior edge ; at their ...
The adductor ridges form an intact Y ; the anterior branch has a strong , prominent , preaxially directed , “ internal trochanter ” ; the posterior branch has an “ external trochanter , ” not distinct from the posterior edge ; at their ...
Page 408
Halves of ectoloph concave from without , passing by easy curves into styles ; a fold present on anterior plate of anterior island ( pli - protoloph ) , and one on posterior plate of posterior island ( pli - hypostyle ) , smaller in the ...
Halves of ectoloph concave from without , passing by easy curves into styles ; a fold present on anterior plate of anterior island ( pli - protoloph ) , and one on posterior plate of posterior island ( pli - hypostyle ) , smaller in the ...
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Common terms and phrases
African African Museum angle anterior aperture appears articulation attached baini base Beds bone border Bradysaurus broad Broom closely collection concave convex coracoidal Cretaceous curved deep described developed digit directed distal distinct dorsal Durban edge elements elongate examples extends external facet fairly FAMILY Fauna femur figs figured folds foramen forms Fossils Genus Geol groove humerus ilium insertion internal known lateral left valve length less lower margin massive median moderately muscles narrow numerous oblique origin ornamentation outer pelvis placed plate pointed Pondoland portion postaxial posterior preaxial present preserved probably prominent proximal ribs ridge right valve rounded seen separated shaft shell short side skull slightly South African species specimen spiral Stoliczka straight strong surface suture teeth TEXT-FIG third trochanter upper valve ventral whorls width Woods