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Nicaniella
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Crassatellacea
Family:
Astartidae
Subfamily:
Astartinae
Formal Genus Name and Reference:
Nicaniella CHAVAN, 1945
Type Species:
Astarte communis Zittel & GOUBERT, 1861, OD
Images
(Click to enlarge in a new window)
Fig. E65,12. *N. ( N.) communis (Zittel & Goubert), U.Jur. (Sequan.), W.France, 12 a, b, LV ext., int., X4, 12c, RV hinge, X5.1 (Chavan, 1945, Zittel & Goubert, 1861).
Synonyms
Geographic Distribution
N.Eu.-W.Eu.-Japan
Age Range
Beginning Stage in Treatise Usage:
M.jur.
Beginning International Stage:
Aalenian
Fraction Up In Beginning Stage:
0
Beginning Date:
174.7
Ending Stage in Treatise Usage:
Paleoc., ?Plio.
Ending International Stage:
Piacenzian
Fraction Up In Ending Stage:
100
Ending Date:
2.58
Description
Trigonal or trapezoidal, small, Concentric ribs regular anteriorly and medially, faint or irregular posteriorly and ventrally, Inner margin usually crenate, Broad well-defined lunule and escutcheon, Hinge with small and strong cardinals, no $3 a$, laminar laterals, short narrow nymph
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Crassatellacea
Family:
Astartidae
Subfamily:
Astartinae
Formal Genus Name and Reference:
Nicaniella CHAVAN, 1945
Type Species:
Astarte communis Zittel & GOUBERT, 1861, OD
Images
(Click to enlarge in a new window)
Fig. E65,12. *N. ( N.) communis (Zittel & Goubert), U.Jur. (Sequan.), W.France, 12 a, b, LV ext., int., X4, 12c, RV hinge, X5.1 (Chavan, 1945, Zittel & Goubert, 1861).
Synonyms
Geographic Distribution
N.Eu.-W.Eu.-Japan
Age Range
Beginning Stage in Treatise Usage:
M.jur.
Beginning International Stage:
Aalenian
Fraction Up In Beginning Stage:
0
Beginning Date:
174.7
Ending Stage in Treatise Usage:
Paleoc., ?Plio.
Ending International Stage:
Piacenzian
Fraction Up In Ending Stage:
100
Ending Date:
2.58
Description
Trigonal or trapezoidal, small, Concentric ribs regular anteriorly and medially, faint or irregular posteriorly and ventrally, Inner margin usually crenate, Broad well-defined lunule and escutcheon, Hinge with small and strong cardinals, no $3 a$, laminar laterals, short narrow nymph