Memoirs of the Geological Survey of Pakistan, Volumes 5-6The Survey, 1969 |
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Page 18
... angle about thirty - five degrees ; whorls about five , increasing rapidly in size as added , with slightly convex side ; suture closely appressed ; base of the last whorl slightly rounded , separated by a short ridge ; whorls ...
... angle about thirty - five degrees ; whorls about five , increasing rapidly in size as added , with slightly convex side ; suture closely appressed ; base of the last whorl slightly rounded , separated by a short ridge ; whorls ...
Page 19
... angle and pattern of ornamentation . Pyrazus indicus Cox has a larger shell , the whorls have well - rounded sides and the spiral angle is about eighteen degrees . The axial ornamentation consists of strongly convex , ( curved backward ) ...
... angle and pattern of ornamentation . Pyrazus indicus Cox has a larger shell , the whorls have well - rounded sides and the spiral angle is about eighteen degrees . The axial ornamentation consists of strongly convex , ( curved backward ) ...
Page 20
... angle about thirty - one degrees ; whorls five , increasing regularly in size feebly convex on the sides ; suture closely appressed , occupies a shallow depression ; ornamentation is either weak or lacking in the spire , but the last ...
... angle about thirty - one degrees ; whorls five , increasing regularly in size feebly convex on the sides ; suture closely appressed , occupies a shallow depression ; ornamentation is either weak or lacking in the spire , but the last ...
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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