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Oxynoticeras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Psilocerataceae
Family:
Oxynoticeratidae
Formal Genus Name and Reference:
Oxynoticeras HYATT, 1875
Type Species:
*Am. oxynotus QUENSTEDT, 1845
Images
(Click to enlarge in a new window)
Fig. 267,4. *0. oxynotum (QUENST.), Ger.; 4a,b, XO.7 (65°)
Synonyms
Geographic Distribution
Eu.-N.Afr.-S. Persia-Japan-Indon.-S.A
Age Range
Beginning Stage in Treatise Usage:
Sinem.
Beginning International Stage:
Sinemurian
Fraction Up In Beginning Stage:
0
Beginning Date:
199.46
Ending Stage in Treatise Usage:
Sinem.
Ending International Stage:
Sinemurian
Fraction Up In Ending Stage:
100
Ending Date:
192.9
Description
Venter sharp, umbilicus moderately open, umbilical slope gentle, ribbing fades on middle of whorl sides. Sutures with long ventral lobe, 2 laterals, and 4 or 5 much smaller auxiliaries.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Psilocerataceae
Family:
Oxynoticeratidae
Formal Genus Name and Reference:
Oxynoticeras HYATT, 1875
Type Species:
*Am. oxynotus QUENSTEDT, 1845
Images
(Click to enlarge in a new window)
Fig. 267,4. *0. oxynotum (QUENST.), Ger.; 4a,b, XO.7 (65°)
Synonyms
Geographic Distribution
Eu.-N.Afr.-S. Persia-Japan-Indon.-S.A
Age Range
Beginning Stage in Treatise Usage:
Sinem.
Beginning International Stage:
Sinemurian
Fraction Up In Beginning Stage:
0
Beginning Date:
199.46
Ending Stage in Treatise Usage:
Sinem.
Ending International Stage:
Sinemurian
Fraction Up In Ending Stage:
100
Ending Date:
192.9
Description
Venter sharp, umbilicus moderately open, umbilical slope gentle, ribbing fades on middle of whorl sides. Sutures with long ventral lobe, 2 laterals, and 4 or 5 much smaller auxiliaries.