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Gyropleura
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Hippuritoida (rudists and relatives)
Superfamily:
Hippuritacea (rudists)
Family:
Monopleuridae
Formal Genus Name and Reference:
Gyropleura DOUVILLÉ, 1887, p. 768
Type Species:
Requienia cenomanensis D'ORBIGNY, 1850, p. 261, OD
Images
(Click to enlarge in a new window)
Fig. E250,5. Gyropleura sp., 5a,b, FV and AV int. (diagram.) showing hinge features (252).
Synonyms
Geographic Distribution
Eu.-Jamaica-N.Am.(Texas)
Age Range
Beginning Stage in Treatise Usage:
L.Cret.(Valangin)
Beginning International Stage:
Valanginian
Fraction Up In Beginning Stage:
0
Beginning Date:
137.7
Ending Stage in Treatise Usage:
U. Cret.(Maastricht.)
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
AV exogyriform, FV operculiform or coiled in low spiral, teeth anterior, FV teeth subequal, small, AV posterior muscle insertion on plate posterior to posterior socket and forming extension of cardinal platform
References
Douvillé, Henri, 1887, Sur quelques formes peu connues de la famille des chamides: Soc. Géol. France, Bull., sér. 3, v. 15, p. 756-802, 18 text fig., pl. 28-31.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Hippuritoida (rudists and relatives)
Superfamily:
Hippuritacea (rudists)
Family:
Monopleuridae
Formal Genus Name and Reference:
Gyropleura DOUVILLÉ, 1887, p. 768
Type Species:
Requienia cenomanensis D'ORBIGNY, 1850, p. 261, OD
Images
(Click to enlarge in a new window)
Fig. E250,5. Gyropleura sp., 5a,b, FV and AV int. (diagram.) showing hinge features (252).
Synonyms
Geographic Distribution
Eu.-Jamaica-N.Am.(Texas)
Age Range
Beginning Stage in Treatise Usage:
L.Cret.(Valangin)
Beginning International Stage:
Valanginian
Fraction Up In Beginning Stage:
0
Beginning Date:
137.7
Ending Stage in Treatise Usage:
U. Cret.(Maastricht.)
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
AV exogyriform, FV operculiform or coiled in low spiral, teeth anterior, FV teeth subequal, small, AV posterior muscle insertion on plate posterior to posterior socket and forming extension of cardinal platform
References
Douvillé, Henri, 1887, Sur quelques formes peu connues de la famille des chamides: Soc. Géol. France, Bull., sér. 3, v. 15, p. 756-802, 18 text fig., pl. 28-31.