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Sphaerium
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Corbiculacea
Family:
Pisidiidae (pill clams)
Formal Genus Name and Reference:
Sphaerium SCOPOLl, 1777
Type Species:
Tellina cornea LINNE,
1758 (fixed, ICZN Opinion 94)
Images
(Click to enlarge in a new window)
Fig. E141,2a-c. *S. (S.) corneum (LINNE), Rec., Eng.; 2a, LV ext., X2 (Jeffreys); 2b,c, LV and RVhinges, X2 (294)
Synonyms
Cyclas, Cornea, Corneocyclas, Amesoda, Cycladites, ?Euglesa, Cyrenastrum, Cycladella, Corneola, Serratisphoerium, Trigonosphaerium, Sphaerinova, Sphaeriastrum
Geographic Distribution
Eu.-N.Am.-Holarctic-Afr
Age Range
Beginning Stage in Treatise Usage:
U.Jur.; Cret.
Beginning International Stage:
Oxfordian
Fraction Up In Beginning Stage:
0
Beginning Date:
161.53
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Oval, quadrate, bluntly triangular in some, shell moderately solid, concentrically striate; beaks nearly median; animal with 2 siphons.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Corbiculacea
Family:
Pisidiidae (pill clams)
Formal Genus Name and Reference:
Sphaerium SCOPOLl, 1777
Type Species:
Tellina cornea LINNE,
1758 (fixed, ICZN Opinion 94)
Images
(Click to enlarge in a new window)
Fig. E141,2a-c. *S. (S.) corneum (LINNE), Rec., Eng.; 2a, LV ext., X2 (Jeffreys); 2b,c, LV and RVhinges, X2 (294)
Synonyms
Cyclas, Cornea, Corneocyclas, Amesoda, Cycladites, ?Euglesa, Cyrenastrum, Cycladella, Corneola, Serratisphoerium, Trigonosphaerium, Sphaerinova, Sphaeriastrum
Geographic Distribution
Eu.-N.Am.-Holarctic-Afr
Age Range
Beginning Stage in Treatise Usage:
U.Jur.; Cret.
Beginning International Stage:
Oxfordian
Fraction Up In Beginning Stage:
0
Beginning Date:
161.53
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Oval, quadrate, bluntly triangular in some, shell moderately solid, concentrically striate; beaks nearly median; animal with 2 siphons.