Memoirs of the Geological Survey of Pakistan, Volume 8The Survey, 1969 |
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Page 4
... whorl sides are gently convex converging towards an acute tricarinate venter . The umbilicus is narrow and the ... side towards the venterolateral margin . Some ribs bifurcate from near the umbilical shoulder . The ribs become much weak to- ...
... whorl sides are gently convex converging towards an acute tricarinate venter . The umbilicus is narrow and the ... side towards the venterolateral margin . Some ribs bifurcate from near the umbilical shoulder . The ribs become much weak to- ...
Page 6
... whorl section is oval with arched venter and whorl sides . The umbilicus is narrow and has a vertical umbilical wall ... side . The ribs bifurcate and trifurcate . Some of the trifurcating ribs behave as intercalatory extending to about 2 / ...
... whorl section is oval with arched venter and whorl sides . The umbilicus is narrow and has a vertical umbilical wall ... side . The ribs bifurcate and trifurcate . Some of the trifurcating ribs behave as intercalatory extending to about 2 / ...
Page 7
... whorl height of 43 % , whorl thickness 57 % and umbilical width 27 % . In ribbing style , whorl section the Nakus ... side . The primary ribs become thin towards the ventral margin and bifurcate on trifurcate from near the middle of whorl ...
... whorl height of 43 % , whorl thickness 57 % and umbilical width 27 % . In ribbing style , whorl section the Nakus ... side . The primary ribs become thin towards the ventral margin and bifurcate on trifurcate from near the middle of whorl ...
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Common terms and phrases
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