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Ophiceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ceratitida
Superfamily:
Otocerataceae
Family:
Ophiceratidae
Formal Genus Name and Reference:
Ophiceras GRIESBACH, 1880
Type Species:
O. tibeticum
Images
(Click to enlarge in a new window)
Fig. 165,5. *O. (O.) tibeticum, Himalaya, 5a,b, x0.7, 5 c, X1 (102*), Fig. 165,6. *O. (L.) chamunda, Himalaya, x0.7 (102*)
Synonyms
Griesbachoceras
Geographic Distribution
N.Am.-Asia
Age Range
Beginning Stage in Treatise Usage:
L.Scyth.(U.Otoceratan)
Beginning International Stage:
Induan
Fraction Up In Beginning Stage:
0
Beginning Date:
251.9
Ending Stage in Treatise Usage:
L.Scyth.(L.Gyronitan)
Ending International Stage:
Induan
Fraction Up In Ending Stage:
100
Ending Date:
249.88
Description
Venter rounded, umbilical wall generally high, conch smooth, with striae of growth and in places a few ribs
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ceratitida
Superfamily:
Otocerataceae
Family:
Ophiceratidae
Formal Genus Name and Reference:
Ophiceras GRIESBACH, 1880
Type Species:
O. tibeticum
Images
(Click to enlarge in a new window)
Fig. 165,5. *O. (O.) tibeticum, Himalaya, 5a,b, x0.7, 5 c, X1 (102*), Fig. 165,6. *O. (L.) chamunda, Himalaya, x0.7 (102*)
Synonyms
Griesbachoceras
Geographic Distribution
N.Am.-Asia
Age Range
Beginning Stage in Treatise Usage:
L.Scyth.(U.Otoceratan)
Beginning International Stage:
Induan
Fraction Up In Beginning Stage:
0
Beginning Date:
251.9
Ending Stage in Treatise Usage:
L.Scyth.(L.Gyronitan)
Ending International Stage:
Induan
Fraction Up In Ending Stage:
100
Ending Date:
249.88
Description
Venter rounded, umbilical wall generally high, conch smooth, with striae of growth and in places a few ribs