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Lepton
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Galeommatacea
Family:
Leptonidae
Formal Genus Name and Reference:
Lepton TURTON, 1822
Type Species:
Solen squamosus MONTAGU, 1803; SD HERRMANNSEN, 1846
Images
(Click to enlarge in a new window)
Fig. E30,9. *L. (L.) squamosum (Montagu), Rec., Ireland, 4a, b, LV int. and RV hinge, X4 (Chavan, n)
Synonyms
Eupoleme
Geographic Distribution
W.Eu.W.N.Am.
Age Range
Beginning Stage in Treatise Usage:
Cret., Eoc.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Ovate-subquadrangular, flattened. Hinge with 2 narrow cardinals on each valve, of which anterior ones (1,2a) are gradually strengthened straight from anterior small crest, 3a very oblique, 4b narrow, both small and thin, resilium broad and trigonal, posterior laterals (duplicate on right) just behind and above it, lamellar
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Galeommatacea
Family:
Leptonidae
Formal Genus Name and Reference:
Lepton TURTON, 1822
Type Species:
Solen squamosus MONTAGU, 1803; SD HERRMANNSEN, 1846
Images
(Click to enlarge in a new window)
Fig. E30,9. *L. (L.) squamosum (Montagu), Rec., Ireland, 4a, b, LV int. and RV hinge, X4 (Chavan, n)
Synonyms
Eupoleme
Geographic Distribution
W.Eu.W.N.Am.
Age Range
Beginning Stage in Treatise Usage:
Cret., Eoc.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Ovate-subquadrangular, flattened. Hinge with 2 narrow cardinals on each valve, of which anterior ones (1,2a) are gradually strengthened straight from anterior small crest, 3a very oblique, 4b narrow, both small and thin, resilium broad and trigonal, posterior laterals (duplicate on right) just behind and above it, lamellar