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Biradiolites
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Hippuritoida (rudists and relatives)
Superfamily:
Hippuritacea (rudists)
Family:
Radiolitidae
Subfamily:
Biradiolitinae
Formal Genus Name and Reference:
Biradiolites D'ORBIGNY, 1850, p. 230
Type Species:
B. canaliculatus D'ORBIGNY, 1850, SD ICZN pend.
Images
(Click to enlarge in a new window)
Fig. E270,1. *B. canaliculatus, Coniac., France, side view, X0.75 (911). [Also Fig. E237,4.]
Synonyms
Eubiradiolites
Geographic Distribution
Eu.-N.Afr.-Asia-N. Am.-Antilles
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Turon.)
Beginning International Stage:
Turonian
Fraction Up In Beginning Stage:
0
Beginning Date:
93.9
Ending Stage in Treatise Usage:
U.Cret.(Maastricht.)
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
AV conical, more or less produced, straight or arched, siphonal bands smooth, slightly depressed, 1 rib in interband, outer wall of fine cells, AV tooth absent. FV operculiform convex to concave with ornament like that of AV.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Hippuritoida (rudists and relatives)
Superfamily:
Hippuritacea (rudists)
Family:
Radiolitidae
Subfamily:
Biradiolitinae
Formal Genus Name and Reference:
Biradiolites D'ORBIGNY, 1850, p. 230
Type Species:
B. canaliculatus D'ORBIGNY, 1850, SD ICZN pend.
Images
(Click to enlarge in a new window)
Fig. E270,1. *B. canaliculatus, Coniac., France, side view, X0.75 (911). [Also Fig. E237,4.]
Synonyms
Eubiradiolites
Geographic Distribution
Eu.-N.Afr.-Asia-N. Am.-Antilles
Age Range
Beginning Stage in Treatise Usage:
U.Cret.(Turon.)
Beginning International Stage:
Turonian
Fraction Up In Beginning Stage:
0
Beginning Date:
93.9
Ending Stage in Treatise Usage:
U.Cret.(Maastricht.)
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
AV conical, more or less produced, straight or arched, siphonal bands smooth, slightly depressed, 1 rib in interband, outer wall of fine cells, AV tooth absent. FV operculiform convex to concave with ornament like that of AV.