Welcome to the Treatise on Invertebrate Paleontology! -->
Please enter a genera name to retrieve more information.
Diceras
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Hippuritoida (rudists and relatives)
Superfamily:
Hippuritacea (rudists)
Family:
Diceratidae
Subfamily:
Diceratinae
Formal Genus Name and Reference:
Diceras LAMARCK, 1805, p. 299
Type Species:
D. arietinum, M
Images
(Click to enlarge in a new window)
Fig. E244,4. *D. arietinum, Raurac., France (Saint-Mihiel), 4a, b (LV=FV), × 1 (246). [Also Fig. E236,1-2; E223,la,b.]
Synonyms
Diceratia, Dicerata
Geographic Distribution
Eu.-N.Afr.
Age Range
Beginning Stage in Treatise Usage:
U.Jur.(U.Oxford.)
Beginning International Stage:
Oxfordian
Fraction Up In Beginning Stage:
50
Beginning Date:
158.16
Ending Stage in Treatise Usage:
U.Jur.(L.Kimmeridg.)
Ending International Stage:
Kimmeridgian
Fraction Up In Ending Stage:
50
Ending Date:
152.01
Description
Shell robust, valves subequal, both with partially coiled beaks
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Hippuritoida (rudists and relatives)
Superfamily:
Hippuritacea (rudists)
Family:
Diceratidae
Subfamily:
Diceratinae
Formal Genus Name and Reference:
Diceras LAMARCK, 1805, p. 299
Type Species:
D. arietinum, M
Images
(Click to enlarge in a new window)
Fig. E244,4. *D. arietinum, Raurac., France (Saint-Mihiel), 4a, b (LV=FV), × 1 (246). [Also Fig. E236,1-2; E223,la,b.]
Synonyms
Diceratia, Dicerata
Geographic Distribution
Eu.-N.Afr.
Age Range
Beginning Stage in Treatise Usage:
U.Jur.(U.Oxford.)
Beginning International Stage:
Oxfordian
Fraction Up In Beginning Stage:
50
Beginning Date:
158.16
Ending Stage in Treatise Usage:
U.Jur.(L.Kimmeridg.)
Ending International Stage:
Kimmeridgian
Fraction Up In Ending Stage:
50
Ending Date:
152.01
Description
Shell robust, valves subequal, both with partially coiled beaks