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Costocyrena
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Corbiculacea
Family:
Corbiculidae (basket clams)
Formal Genus Name and Reference:
Costocyrena Hayami, 1965, ex Matsumoto & KANMERA, 1952, MS
Type Species:
C. matsumotoi, OD
Images
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Synonyms
Geographic Distribution
Japan
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:
L.Cret.
Ending International Stage:
Albian
Fraction Up In Ending Stage:
100
Ending Date:
100.5
Description
Shell radially ribbed, hinge resembling that in Eomiodon
References
Hayami, Itaru, 1965, Lower Cretaceous marine pelecypods of Japan, Part 1: Kyushu Univ., Mem. Fac. Sci., ser. D, Geol., v. 15, no. 2, p. 221-349, pl. 27-52.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Corbiculacea
Family:
Corbiculidae (basket clams)
Formal Genus Name and Reference:
Costocyrena Hayami, 1965, ex Matsumoto & KANMERA, 1952, MS
Type Species:
C. matsumotoi, OD
Images
(Click to enlarge in a new window)Synonyms
Geographic Distribution
Japan
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:
L.Cret.
Ending International Stage:
Albian
Fraction Up In Ending Stage:
100
Ending Date:
100.5
Description
Shell radially ribbed, hinge resembling that in Eomiodon
References
Hayami, Itaru, 1965, Lower Cretaceous marine pelecypods of Japan, Part 1: Kyushu Univ., Mem. Fac. Sci., ser. D, Geol., v. 15, no. 2, p. 221-349, pl. 27-52.