Cravenoceras

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m (Protected "Cravenoceras" ([move=sysop] (indefinite)))
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''Cravenoceras'' is an Upper Mississipian (Lower Carboniferous) genus of ammonoid.
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'''Characters''' (from Gordon 1964): Conch thick discoidal to globose, narrowly to widely umbilicate; ornamented by flat transverse striae, slightly raised along orad edge giving appearance of raised bands; lamellae in mature shelled bowed slightly orad across venter, flattened in middle or form a definite sinus across venter; internal varices present. Suture with eight pointed lobes, simple, bell-shaped, pointed; ventral lobe relatively narrow, divided generally to less than half its length by median saddle.
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  [[Ammonoidea|<==]]''Cravenoceras''
  [[Ammonoidea|<==]]''Cravenoceras''
     |--''C. fayettevillae'' Gordon 1964 P68
     |--''C. fayettevillae'' Gordon 1964 P68
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==References==
==References==
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[http://books.google.com.au/books?id=Ph0lAQAAIAAJ Gordon, M., Jr. 1964]. Carboniferous cephalopods of Arkansas. ''Geological Survey Professional Paper'' 460.
[P68] Purnell, L. R. 1968. Catalog of the Type Specimens of Invertebrate Fossils. Part I: Paleozoic Cephalopoda. ''United States National Museum Bulletin'' 262: 1-198.
[P68] Purnell, L. R. 1968. Catalog of the Type Specimens of Invertebrate Fossils. Part I: Paleozoic Cephalopoda. ''United States National Museum Bulletin'' 262: 1-198.

Revision as of 03:47, 27 January 2011

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