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Cyprimeria
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Veneracea (Venus clams)
Family:
Veneridae
Subfamily:
Cyclininae
Formal Genus Name and Reference:
Cyprimeria CONRAD, 1864
Type Species:
Cytherea excavata MORTON, 1833, M
Images
(Click to enlarge in a new window)
Fig. E146,1. * C. excavata (Morton), Cret., USA(N.J.), la-c, LV ext., RV hinge, LV int., * (Weller, 1907)
Synonyms
Geographic Distribution
N.Am.-Eu.
Age Range
Beginning Stage in Treatise Usage:
L.Cret.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Eoc.
Ending International Stage:
Priabonian
Fraction Up In Ending Stage:
100
Ending Date:
33.9
Description
Subcircular, valves flattened, bent to left posteriorly, lunule wanting, escutcheon deep, sculpture weakly concentric, cardinal teeth diverging, nymphs rugose, pallial line hardly sinuated, inner margins smooth
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Veneracea (Venus clams)
Family:
Veneridae
Subfamily:
Cyclininae
Formal Genus Name and Reference:
Cyprimeria CONRAD, 1864
Type Species:
Cytherea excavata MORTON, 1833, M
Images
(Click to enlarge in a new window)
Fig. E146,1. * C. excavata (Morton), Cret., USA(N.J.), la-c, LV ext., RV hinge, LV int., * (Weller, 1907)
Synonyms
Geographic Distribution
N.Am.-Eu.
Age Range
Beginning Stage in Treatise Usage:
L.Cret.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Eoc.
Ending International Stage:
Priabonian
Fraction Up In Ending Stage:
100
Ending Date:
33.9
Description
Subcircular, valves flattened, bent to left posteriorly, lunule wanting, escutcheon deep, sculpture weakly concentric, cardinal teeth diverging, nymphs rugose, pallial line hardly sinuated, inner margins smooth