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Diplodonta
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Lucinacea
Family:
Ungulinidae
Formal Genus Name and Reference:
Diplodonta BRONN, 1831
Type Species:
Venus lupinus Brocchi, 1814 (non Linné, 1858) (=Tellina rotundata Montagu, 1803) ( = D. rotundata var. aequilateralis Cerulli, 1909), SD HERRMANNSEN, 1846
Images
(Click to enlarge in a new window)
Fig. E20,10. *D. (D.) rotundata (Montagu), Rec., Medit., 10a,b, LV int., RV hinge, X3 (Chavan, 1960)
Synonyms
Geographic Distribution
Eu.-N.Am.-Pac.-W.Afr.
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
Suborbicular, convex, inequilateral, beaks prosogyrous, ligament on medium-sized flattened nymph with narrow resilium on its anterior extremity, hinge with 2 well-developed oblique cardinals in each valve and weak $5 b$, anterior muscle scars sinuate, narrower than posterior scars
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Lucinacea
Family:
Ungulinidae
Formal Genus Name and Reference:
Diplodonta BRONN, 1831
Type Species:
Venus lupinus Brocchi, 1814 (non Linné, 1858) (=Tellina rotundata Montagu, 1803) ( = D. rotundata var. aequilateralis Cerulli, 1909), SD HERRMANNSEN, 1846
Images
(Click to enlarge in a new window)
Fig. E20,10. *D. (D.) rotundata (Montagu), Rec., Medit., 10a,b, LV int., RV hinge, X3 (Chavan, 1960)
Synonyms
Geographic Distribution
Eu.-N.Am.-Pac.-W.Afr.
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
Suborbicular, convex, inequilateral, beaks prosogyrous, ligament on medium-sized flattened nymph with narrow resilium on its anterior extremity, hinge with 2 well-developed oblique cardinals in each valve and weak $5 b$, anterior muscle scars sinuate, narrower than posterior scars