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Owenoceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Goniatitida
Superfamily:
Gastrioceratoidea
Family:
Gastrioceratidae
Formal Genus Name and Reference:
Owenoceras Miller & FURNISH, 1940b, p. 359
Type Species:
Neoglyphioceras bellilineatum Miller & OWEN, 1939, p. 154, OD
Images
(Click to enlarge in a new window)
Fig. 60, 5a-c. *O. bellilineatum (Miller & Owen), Ewing strip pit, Henry County, Missouri, Cherokee Formation above Mulky coal, Desmoinesian, Owen collection no. 627, a-b, X 2, c, suture, diameter at 17 mm , whorl height 5 mm , whorl width 12 mm , X 4.5 (Miller & Owen, 1939).
Synonyms
Geographic Distribution
China (Xinjiang, ?Guizhou), Russia (Siberia), USA (Missouri, Oklahoma)
Age Range
Beginning Stage in Treatise Usage:
Pennsylvanian (upper Moscovian)
Beginning International Stage:
Moscovian
Fraction Up In Beginning Stage:
66
Beginning Date:
309.78
Ending Stage in Treatise Usage:
Pennsylvanian (upper Moscovian)
Ending International Stage:
Moscovian
Fraction Up In Ending Stage:
100
Ending Date:
307.02
Description
Conch form involute, with moderately wide or rather narrow umbilicus, Shell surface with prominent longitudinal lirae, growth lines weak, Umbilical nodes may be present, Suture similar to Gastrioceras
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Goniatitida
Superfamily:
Gastrioceratoidea
Family:
Gastrioceratidae
Formal Genus Name and Reference:
Owenoceras Miller & FURNISH, 1940b, p. 359
Type Species:
Neoglyphioceras bellilineatum Miller & OWEN, 1939, p. 154, OD
Images
(Click to enlarge in a new window)
Fig. 60, 5a-c. *O. bellilineatum (Miller & Owen), Ewing strip pit, Henry County, Missouri, Cherokee Formation above Mulky coal, Desmoinesian, Owen collection no. 627, a-b, X 2, c, suture, diameter at 17 mm , whorl height 5 mm , whorl width 12 mm , X 4.5 (Miller & Owen, 1939).
Synonyms
Geographic Distribution
China (Xinjiang, ?Guizhou), Russia (Siberia), USA (Missouri, Oklahoma)
Age Range
Beginning Stage in Treatise Usage:
Pennsylvanian (upper Moscovian)
Beginning International Stage:
Moscovian
Fraction Up In Beginning Stage:
66
Beginning Date:
309.78
Ending Stage in Treatise Usage:
Pennsylvanian (upper Moscovian)
Ending International Stage:
Moscovian
Fraction Up In Ending Stage:
100
Ending Date:
307.02
Description
Conch form involute, with moderately wide or rather narrow umbilicus, Shell surface with prominent longitudinal lirae, growth lines weak, Umbilical nodes may be present, Suture similar to Gastrioceras