Memoirs of the Geological Survey of Pakistan, Volumes 5-6The Survey, 1969 |
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Page 17
... ridge short ; beaks strongly convex , incurved ; slightly prosogyrate ; margin regular , gently crenulated ; anterodorsal margin short , straight inclined dorsally ; anterior margin strongly convex ; ventral margin long , broadly convex ...
... ridge short ; beaks strongly convex , incurved ; slightly prosogyrate ; margin regular , gently crenulated ; anterodorsal margin short , straight inclined dorsally ; anterior margin strongly convex ; ventral margin long , broadly convex ...
Page 18
... ridge ; columellar margin distinct ; spire ornamented by thin varices slightly curved in backward direction , six in number , crossed by a faint spiral line along the posterior margin of the shoulder , somewhat tuberculated at the point ...
... ridge ; columellar margin distinct ; spire ornamented by thin varices slightly curved in backward direction , six in number , crossed by a faint spiral line along the posterior margin of the shoulder , somewhat tuberculated at the point ...
Page 36
... ridge distinct , inflated ; no escutcheon ; lunule shallow , orbicular in outline ; anterodorsal margin long , almost oblique , inclined dorsally , broadly angulated ventrally ; ventral margin tapering and rounded anteriorly , slightly ...
... ridge distinct , inflated ; no escutcheon ; lunule shallow , orbicular in outline ; anterodorsal margin long , almost oblique , inclined dorsally , broadly angulated ventrally ; ventral margin tapering and rounded anteriorly , slightly ...
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Common terms and phrases
abapertural view aperture appears Arch Archiac & Haime band broadly Chharat consists convex Corbula Cossmann & Pissarro Cotter Cretaceous Description Deshayes designation differs dimensions District D. G. Khan Domanda shale dorsally Drazinda shale Drug section exterior left valve Family fauna feet figured Formation forms fossil Further distribution gastropod Genus Geol geology Ghazij fm gray Group height holotype India intervals Iqbal Italy Jhalar Kohat Lamarck larger length Limestone lines Linne Locality Lower Eocene margin Middle Eocene monotypy ornament Ostrea outline pakistanica Eames Paleocene Paris pelecypod PLATE pointed posterior preserved prominent Quetta Rakhi Nala Range Recent Remarks ribs right valve rounded Shahrig shell short similar slightly soriensis Eames specimen spiral Surv suture thick thin threads Type number.-Specimens type occurrence Type species UCLA umbonal Upper ventral Vredenburg West Pakistan whorls Zinda Pir section