Cravenoceras

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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.
'''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''
 
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    |--''C. fayettevillae'' Gordon 1964 P68
 
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    |--''C. friscoense'' P68
 
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    |--''C. hesperium'' Miller & Furnish 1940 P68
 
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    |--''C. incisum'' P68
 
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    |--''C. involutum'' Gordon 1964 P68
 
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    |--''C. inyoense'' Gordon 1964 P68
 
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    |--''C. lineolatum'' Gordon 1964 P68
 
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    |--''C. merriami'' P68
 
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    |--''C. miseri'' Gordon 1964 P68
 
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    |--''C. nevadense'' Miller & Furnish 1940 P68
 
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    |--''C. richardsonianum'' P68
 
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    `--''C. scotti'' Miller & Youngquist 1948 P68
 
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<nowiki>*</nowiki> Type species of generic name indicated
 
==References==
==References==
[http://books.google.com.au/books?id=Ph0lAQAAIAAJ Gordon, M., Jr. 1964]. Carboniferous cephalopods of Arkansas. ''Geological Survey Professional Paper'' 460.
[http://books.google.com.au/books?id=Ph0lAQAAIAAJ Gordon, M., Jr. 1964]. Carboniferous cephalopods of Arkansas. ''Geological Survey Professional Paper'' 460.
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[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.
 
'''Credits'''
'''Credits'''
[[User:Christopher|Christopher]] 10:40, 25 January 2011 (UTC)
[[User:Christopher|Christopher]] 10:40, 25 January 2011 (UTC)

Latest revision as of 03:35, 18 July 2014

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