Memoirs of the Geological Survey of Pakistan, Volume 8The Survey, 1969 |
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Page 3
... microconch adult form as Kherai- ceras aff cosmopolita ( Parona and Bonarelli ) from the Lower Macrocephalus Beds of Jumra . This specimen is closely allied to K. ( Bomburites ) rather than to the subgenus Kheraiceras , ( Having small ...
... microconch adult form as Kherai- ceras aff cosmopolita ( Parona and Bonarelli ) from the Lower Macrocephalus Beds of Jumra . This specimen is closely allied to K. ( Bomburites ) rather than to the subgenus Kheraiceras , ( Having small ...
Page 4
... n . sp ( Plate 2 , fig . 1 ) 1931 Kheraiceras aff . cosmopolita . ( Parona and Bonerelli ) Spath , p . 202 ( 1928 ) , pl . XCVI , figs . 8a , b . Diagnosis . - Shell adult , small ( microconch ) 4 SYSTEMATIC DESCRIPTIONS.
... n . sp ( Plate 2 , fig . 1 ) 1931 Kheraiceras aff . cosmopolita . ( Parona and Bonerelli ) Spath , p . 202 ( 1928 ) , pl . XCVI , figs . 8a , b . Diagnosis . - Shell adult , small ( microconch ) 4 SYSTEMATIC DESCRIPTIONS.
Page 5
... microconchs and have elaborated apertural structures in contrast to the simple aperture of Kheraiceras . It is highly suggestive that Kheraiceras represent a macroconch with a simple aperture and Bomburites a microconch with a more ...
... microconchs and have elaborated apertural structures in contrast to the simple aperture of Kheraiceras . It is highly suggestive that Kheraiceras represent a macroconch with a simple aperture and Bomburites a microconch with a more ...
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ammonite bed ammonite fauna ammonites from Wam argillaceous limestone bed Bajocian Baluchistan Bathonian Belemnite shale bifurcating body chamber Chiltan limestone Choffatia Choffatia Correlation Cutch described specimen diadematus Waagen Dimensions disconformably Dolikephalites Fatmi figured by Waagen Harnai holotype Hunting Survey indet involute Jurassic age Kheraiceras Bomburites limestone and shale Locality.-Wam Tangi Loralai Lower Callovian ammonite Lower Cretaceous Lower Jurassic Macrocephalites Indocephalites Macrocephalus Zone Massive limestone Mazar Drik formation Mazar Drik limestone Middle Jurassic outline of whorl Paralcidia are reported Paralcidia dubia Spath Parona perlamellosus Spath Plate Pleurocephalites polyphemus primary ribs prorsiradiate pyritic argillaceous limestone Quetta ribbing style Sarwan area sequence shell side view soorkaensis Spath species specimen from Nakus specimens internal mould Stratigraphic Range.-Lower Callovian style and side subgenus Survey of Pakistan synonymy Takatu limestone thickness Umbilical diameter thin bedded limestone Tithonian trifurcate umbilical wall umbilicus ventral view Vredenburg 1909 Wam Tangi whorl section whorl side Whorl thickness Umbilical