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Oraniceras
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Perisphinctaceae
Family:
Parkinsoniidae
Formal Genus Name and Reference:
Oraniceras FLAMAND, 1911 [Subgen. of Parkinsonia.]
Type Species:
O. hamyanense
Images
(Click to enlarge in a new window)
Fig. 384,12, 385,1. *P. (O.) hamyanensis (Flamand), Alg., x1 (386*).
Synonyms
Geographic Distribution
Eu.-N.Afr.-Donetz
Age Range
Beginning Stage in Treatise Usage:
L.Bath.
Beginning International Stage:
Bathonian
Fraction Up In Beginning Stage:
0
Beginning Date:
168.17
Ending Stage in Treatise Usage:
L.Bath.
Ending International Stage:
Bathonian
Fraction Up In Ending Stage:
40
Ending Date:
167.02
Description
Compressed, involute, inner and middle whorls well ribbed, with ribbing in some inclined to be fasciculate, outer whorl large, smooth, becoming discoidal. In some specimens, a keel-like raised fillet takes place of ventral smooth band and may appear on either test or cast. No tubercles, no lappets. Comprises wurttembergica group. [Subgen. of Parkinsonia.]
References
Flamand, G. B. M., 1911, Recherches géologiques et géographiques sur le Haut-Pays de l'Oranie et sur le Sahara (Algérie et Territoires du Sud): (Lyon).
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Cephalopoda
Subclass:
Ammonoidea
Order:
Ceratitida
Suborder:
Ammonitina
Superfamily:
Perisphinctaceae
Family:
Parkinsoniidae
Formal Genus Name and Reference:
Oraniceras FLAMAND, 1911 [Subgen. of Parkinsonia.]
Type Species:
O. hamyanense
Images
(Click to enlarge in a new window)
Fig. 384,12, 385,1. *P. (O.) hamyanensis (Flamand), Alg., x1 (386*).
Synonyms
Geographic Distribution
Eu.-N.Afr.-Donetz
Age Range
Beginning Stage in Treatise Usage:
L.Bath.
Beginning International Stage:
Bathonian
Fraction Up In Beginning Stage:
0
Beginning Date:
168.17
Ending Stage in Treatise Usage:
L.Bath.
Ending International Stage:
Bathonian
Fraction Up In Ending Stage:
40
Ending Date:
167.02
Description
Compressed, involute, inner and middle whorls well ribbed, with ribbing in some inclined to be fasciculate, outer whorl large, smooth, becoming discoidal. In some specimens, a keel-like raised fillet takes place of ventral smooth band and may appear on either test or cast. No tubercles, no lappets. Comprises wurttembergica group. [Subgen. of Parkinsonia.]
References
Flamand, G. B. M., 1911, Recherches géologiques et géographiques sur le Haut-Pays de l'Oranie et sur le Sahara (Algérie et Territoires du Sud): (Lyon).