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Cyrtodaria
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Myoida
Suborder:
Myina
Superfamily:
Hiatellacea
Family:
Hiatellidae
Formal Genus Name and Reference:
Cyrtodaria REUSS, 1801
Type Species:
Mya siliqua Spengler, 1793, SD Vokes & COX, 1961
Images
(Click to enlarge in a new window)
Fic. E161,10. *C. siliqua (Spengler), Rec., N.Atl., 10 a, b, RV int. with LV hinge, RV ext., X1 (H. Adams & A. Adams).
Synonyms
Cyrtodera, Glycimeris
Geographic Distribution
Eu.-Arctic
Age Range
Beginning Stage in Treatise Usage:
Paleoc.
Beginning International Stage:
Danian
Fraction Up In Beginning Stage:
0
Beginning Date:
66.04
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Elongate, with thick, dark periostracum, hinge with 2 teeth, nearly central, pallial sinus small, irregular
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Myoida
Suborder:
Myina
Superfamily:
Hiatellacea
Family:
Hiatellidae
Formal Genus Name and Reference:
Cyrtodaria REUSS, 1801
Type Species:
Mya siliqua Spengler, 1793, SD Vokes & COX, 1961
Images
(Click to enlarge in a new window)
Fic. E161,10. *C. siliqua (Spengler), Rec., N.Atl., 10 a, b, RV int. with LV hinge, RV ext., X1 (H. Adams & A. Adams).
Synonyms
Cyrtodera, Glycimeris
Geographic Distribution
Eu.-Arctic
Age Range
Beginning Stage in Treatise Usage:
Paleoc.
Beginning International Stage:
Danian
Fraction Up In Beginning Stage:
0
Beginning Date:
66.04
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Elongate, with thick, dark periostracum, hinge with 2 teeth, nearly central, pallial sinus small, irregular