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Plicatounio
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Unionoida (Freshwater mussels and relatives)
Superfamily:
Unionacea (freshwater mussels)
Family:
Unionidae
Subfamily:
Unioninae
Formal Genus Name and Reference:
Plicatounio Kobayashi & SUZUKI, 1936
Type Species:
P. naktongensis, OD
Images
(Click to enlarge in a new window)
Fig. D29,5. *P. naktongensis, U.Jur., Japan, RV ext., X0.75 (479).
Synonyms
Geographic Distribution
U.Jur., Manchuria-Japan, U.Cret., N.Afr.(Fr.Sudan)
Age Range
Beginning Stage in Treatise Usage:
U.Jur., U.Cret.
Beginning International Stage:
Oxfordian
Fraction Up In Beginning Stage:
0
Beginning Date:
161.53
Ending Stage in Treatise Usage:
U.Jur., U.Cret.
Ending International Stage:
Tithonian
Fraction Up In Ending Stage:
100
Ending Date:
143.1
Description
Moderately convex, subelliptical to subtriangular, umbones large, located at or slightly ahead of middle, several strong subcrenate plications radiate from umbonal region to posteroventral margin, anterior cardinal tooth relatively long and regularly crenulate, posterior cardinal prominent, noncrenulate, anterior adductor scar more strongly impressed than posterior
References
——, \& Suzuki, Koiti, 1936, Non-marine shells of the NaktongWakino Series: Japan. Geol. Geogr., Jour., v. 13, p. 243-259, pl. 27-29.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Unionoida (Freshwater mussels and relatives)
Superfamily:
Unionacea (freshwater mussels)
Family:
Unionidae
Subfamily:
Unioninae
Formal Genus Name and Reference:
Plicatounio Kobayashi & SUZUKI, 1936
Type Species:
P. naktongensis, OD
Images
(Click to enlarge in a new window)
Fig. D29,5. *P. naktongensis, U.Jur., Japan, RV ext., X0.75 (479).
Synonyms
Geographic Distribution
U.Jur., Manchuria-Japan, U.Cret., N.Afr.(Fr.Sudan)
Age Range
Beginning Stage in Treatise Usage:
U.Jur., U.Cret.
Beginning International Stage:
Oxfordian
Fraction Up In Beginning Stage:
0
Beginning Date:
161.53
Ending Stage in Treatise Usage:
U.Jur., U.Cret.
Ending International Stage:
Tithonian
Fraction Up In Ending Stage:
100
Ending Date:
143.1
Description
Moderately convex, subelliptical to subtriangular, umbones large, located at or slightly ahead of middle, several strong subcrenate plications radiate from umbonal region to posteroventral margin, anterior cardinal tooth relatively long and regularly crenulate, posterior cardinal prominent, noncrenulate, anterior adductor scar more strongly impressed than posterior
References
——, \& Suzuki, Koiti, 1936, Non-marine shells of the NaktongWakino Series: Japan. Geol. Geogr., Jour., v. 13, p. 243-259, pl. 27-29.