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Eriphyla
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Crassatellacea
Family:
Astartidae
Subfamily:
Eriphylinae
Formal Genus Name and Reference:
Eriphyla GABB, 1867
Type Species:
E. umbonata GABB, 1864, OD
Images
(Click to enlarge in a new window)
Fig. E68,1. E. (E.) lapidis (Packard), U.Cret., USA(Calif.), la,b, LV and RV hinges, X0.75 (748)
Synonyms
Mikayoella
Geographic Distribution
W.N.Am.-W.Eu.-Japan
Age Range
Beginning Stage in Treatise Usage:
Cret.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Almost equilateral, rounded, smooth or finely lamellar. Obliquely depressed lunule, narrow escutcheon. Hinge with 2 cardinals on each valve, 4b not reaching inferior margin of plate but posteriorly fused to nymphal thickening, AIII, AIV, PII, PIII present. Shallow pallial inflexion. Margin smooth or crenulate.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Crassatellacea
Family:
Astartidae
Subfamily:
Eriphylinae
Formal Genus Name and Reference:
Eriphyla GABB, 1867
Type Species:
E. umbonata GABB, 1864, OD
Images
(Click to enlarge in a new window)
Fig. E68,1. E. (E.) lapidis (Packard), U.Cret., USA(Calif.), la,b, LV and RV hinges, X0.75 (748)
Synonyms
Mikayoella
Geographic Distribution
W.N.Am.-W.Eu.-Japan
Age Range
Beginning Stage in Treatise Usage:
Cret.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Almost equilateral, rounded, smooth or finely lamellar. Obliquely depressed lunule, narrow escutcheon. Hinge with 2 cardinals on each valve, 4b not reaching inferior margin of plate but posteriorly fused to nymphal thickening, AIII, AIV, PII, PIII present. Shallow pallial inflexion. Margin smooth or crenulate.