Memoirs of the Geological Survey of Pakistan, Volumes 5-6The Survey, 1969 |
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Page 12
... outline , the position of umbones and sculpture ; it is triangular in outline , umbones are not distant , the ribs alternate regularly in thickness and are granulated at their intersection and with distinct numerous concentric ridges ...
... outline , the position of umbones and sculpture ; it is triangular in outline , umbones are not distant , the ribs alternate regularly in thickness and are granulated at their intersection and with distinct numerous concentric ridges ...
Page 23
... outline . It is very irregular ; the shell is thick ; the cardinal margin is distinctly straight , the umbones are scarcely prominent situated anteior third of the cardinal margin . Ostrea ( Liostrea ) drugense n.sp. ( described ...
... outline . It is very irregular ; the shell is thick ; the cardinal margin is distinctly straight , the umbones are scarcely prominent situated anteior third of the cardinal margin . Ostrea ( Liostrea ) drugense n.sp. ( described ...
Page 29
... outline and ornament ; the shell is slipper - like in shape , but has a sharp triangular outline dorsally and broad triangular outline ventrally ; umbones are small ; ornament consists of radial ribs with one - and - half times broad ...
... outline and ornament ; the shell is slipper - like in shape , but has a sharp triangular outline dorsally and broad triangular outline ventrally ; umbones are small ; ornament consists of radial ribs with one - and - half times broad ...
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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