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THE AGE OF THE FAUNA
baini Mytilus Sharpe
THE DISTRIBUTION OF THE UITENHAGE FAUNA IN RELA
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adult African angle anterior aperture appears atherstoni baini Band becomes beds bone border Broom characters closely collection comparable comparison considerably convex Cretaceous curved d'Orbigny described developed differs direction distinct distinguished dorsal doubt elongated evidence fauna figured flank fossils front frontal further genus Geol greater greatest half height Holcostephanus individual Jurassic known lateral length less lower margin marked measures middle Museum narrow Neocomian obtained occur Oomia ornamentation outline passes Plate portion posterior present preserved probably prominent referred regarded region relatively represented resemblance ribs ridges Rogers rounded sculpture seems seen separated Sharpe shell short shown shows side similar single slightly South African species specimen stage Sunday's River surface Tate traced Trigonia tubercles Uitenhage umbilical umbo umbonal upper valve whorl