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Oxycerites
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Haplocerataceae
Family:
Oppeliidae
Formal Genus Name and Reference:
Oxycerites ROLLIER, 1909
Type Species:
Am. aspidoides OPPEL, 1857
Images
(Click to enlarge in a new window)
Fig. 320,1. *O. (O.) aspidoides (Oppel), U.Bath., Switz., 1a,b, x0.3 (327*)
Synonyms
Geographic Distribution
Eu.-N.Afr.-Crimea-Cauc.-Persia-Pamir-Himalaya-Indon.-S.Alaska-Can.-S. Am.
Age Range
Beginning Stage in Treatise Usage:
M.Jur.(U.Baj.)
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
45
Beginning Date:
169.67
Ending Stage in Treatise Usage:
M.Jur.(Callov.)
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Differs from Oppelia in having sharper venter and in lacking secondary ribbing except in young of some species. Subgen. of Oppelia.
References
Rollier, Louis, 1909, Phylogénie des principaux genres d'ammonoïdes de l'Oolithique (Dogger) et de l'Oxfordien: Arch. Sci. phys. nat. Genève, sér. 4, tome 28, p. 611-623.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonitida
Superfamily:
Haplocerataceae
Family:
Oppeliidae
Formal Genus Name and Reference:
Oxycerites ROLLIER, 1909
Type Species:
Am. aspidoides OPPEL, 1857
Images
(Click to enlarge in a new window)
Fig. 320,1. *O. (O.) aspidoides (Oppel), U.Bath., Switz., 1a,b, x0.3 (327*)
Synonyms
Geographic Distribution
Eu.-N.Afr.-Crimea-Cauc.-Persia-Pamir-Himalaya-Indon.-S.Alaska-Can.-S. Am.
Age Range
Beginning Stage in Treatise Usage:
M.Jur.(U.Baj.)
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
45
Beginning Date:
169.67
Ending Stage in Treatise Usage:
M.Jur.(Callov.)
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Differs from Oppelia in having sharper venter and in lacking secondary ribbing except in young of some species. Subgen. of Oppelia.
References
Rollier, Louis, 1909, Phylogénie des principaux genres d'ammonoïdes de l'Oolithique (Dogger) et de l'Oxfordien: Arch. Sci. phys. nat. Genève, sér. 4, tome 28, p. 611-623.