Memoirs of the Geological Survey of Pakistan, Volumes 5-6The Survey, 1969 |
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Page 17
... posterior margin strongly convex ; posterodorsal margin short , straight , inclined dorsally ; surface ornamented by smooth , flat - topped , prominent radial ribs , about forty - two in number , much wider than their intervals which ...
... posterior margin strongly convex ; posterodorsal margin short , straight , inclined dorsally ; surface ornamented by smooth , flat - topped , prominent radial ribs , about forty - two in number , much wider than their intervals which ...
Page 22
... posterior suture . An intercalary thread is added between he posterior primary line and the posterior suture on the fourth whorl and on the next whorl one more intercalary thread develops between the two primary lines . The spiral ...
... posterior suture . An intercalary thread is added between he posterior primary line and the posterior suture on the fourth whorl and on the next whorl one more intercalary thread develops between the two primary lines . The spiral ...
Page 60
... posterior part , the convex portion of the base bears ; two more threads bisected by fine intercalary thread ; aperture narrow , apertural notch deep with parallel margins colomella concealed , Turris ( Gemmula ) drugensis Iqbal is ...
... posterior part , the convex portion of the base bears ; two more threads bisected by fine intercalary thread ; aperture narrow , apertural notch deep with parallel margins colomella concealed , Turris ( Gemmula ) drugensis Iqbal is ...
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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