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Page 14
... straight ; ornamented by strong , somewhat granulose radial ribs having wider
intervals , anterior and posterior marginal region bears more fine ribs , the ribs
along ventral margin bifurcated ; interior not exposed . Type number : Specimen .
... straight ; ornamented by strong , somewhat granulose radial ribs having wider
intervals , anterior and posterior marginal region bears more fine ribs , the ribs
along ventral margin bifurcated ; interior not exposed . Type number : Specimen .
Page 17
The ornamentation is different , the radial ribs are very numerous , more crowded
anteriorly and in the middle region than posteriorly . The radial ribs are traversed
anteriorly by broad markings and cross - bars . This species is distinguished by ...
The ornamentation is different , the radial ribs are very numerous , more crowded
anteriorly and in the middle region than posteriorly . The radial ribs are traversed
anteriorly by broad markings and cross - bars . This species is distinguished by ...
Page 28
... posteriorly ; dorsal margin sharply angulated , triangular ; ornament consists of
prominent , thick , radial ribs , weaker in the umbonal region , with one - and - half
to two times broad intervals ; interior not exposed as both the valves are intact .
... posteriorly ; dorsal margin sharply angulated , triangular ; ornament consists of
prominent , thick , radial ribs , weaker in the umbonal region , with one - and - half
to two times broad intervals ; interior not exposed as both the valves are intact .
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Common terms and phrases
abapertural view aperture appears Arch Archiac & Haime band broadly Chharat consists convex 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 Miocene monotypy number.—Specimens Nummulites 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 specimen spiral suture thick thin threads Type number Type number.-Specimens type occurrence Type species UCLA umbonal Upper Vredenburg West Pakistan whorls Zinda Pir section
Bibliographic information
| Title | Memoirs of the Geological Survey of Pakistan, Volumes 5-6 Memoirs of the Geological Survey of Pakistan, Geological Survey of Pakistan Memoirs of the Geological Survey of Pakistan: Palaeontologia Pakistanica |
| Contributor | Geological Survey of Pakistan |
| Publisher | The Survey, 1969 |
| Original from | the University of Michigan |
| Digitized | 14 Feb 2008 |
| Export Citation | BiBTeX EndNote RefMan |