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Isoarca
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeotaxodonta
Order:
Nuculoida
Superfamily:
Nuculanacea
Family:
Isoarcidae
Formal Genus Name and Reference:
Isoarca MÜNSTER, 1842
Type Species:
Isocardia subspirata Münster, 1837, SD WOODWARD, 1854
Images
(Click to enlarge in a new window)
Fig. A10,1a. I. texata (Münster), U.Jur., Ger., RV int., X1 (Goldfuss), Fig. A10,1b,c. *I. subspirata (Münster), U.Jur., Ger., 1 b, c, LV and dorsal views of int. molds, both valves X1 (341)
Synonyms
Prionia
Geographic Distribution
Eu.
Age Range
Beginning Stage in Treatise Usage:
M.Jur.(Bajoc.)
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
0
Beginning Date:
170.9
Ending Stage in Treatise Usage:
U.Cret.(Senon.)
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Cordate, inequilateral, shell material nacreous, ligament external, Sculpture decussate to concentrically striate, hinge teeth angled at ends of anterior and posterior series, hinge arched
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeotaxodonta
Order:
Nuculoida
Superfamily:
Nuculanacea
Family:
Isoarcidae
Formal Genus Name and Reference:
Isoarca MÜNSTER, 1842
Type Species:
Isocardia subspirata Münster, 1837, SD WOODWARD, 1854
Images
(Click to enlarge in a new window)
Fig. A10,1a. I. texata (Münster), U.Jur., Ger., RV int., X1 (Goldfuss), Fig. A10,1b,c. *I. subspirata (Münster), U.Jur., Ger., 1 b, c, LV and dorsal views of int. molds, both valves X1 (341)
Synonyms
Prionia
Geographic Distribution
Eu.
Age Range
Beginning Stage in Treatise Usage:
M.Jur.(Bajoc.)
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
0
Beginning Date:
170.9
Ending Stage in Treatise Usage:
U.Cret.(Senon.)
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Cordate, inequilateral, shell material nacreous, ligament external, Sculpture decussate to concentrically striate, hinge teeth angled at ends of anterior and posterior series, hinge arched