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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

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Fossil Image
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