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Arctica
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Arcticacea
Family:
Arcticidae
Formal Genus Name and Reference:
Arctica SCHUMACHER, 1817 [Not preoccupied by Arctica Möhring, 1758 (ICZN, rejected work)]
Type Species:
A.vulgaris ( = Venus islandica LINNÉ, 1767), M
Images
(Click to enlarge in a new window)
Fig. E127,1. *A. islandica (Linné), Plio., Eng., la,b, RV ext., int., X0.3 (Wood, 1853)."
Synonyms
Cyprina, Armida, Asmidia, Nympha, Cypriniadea
Geographic Distribution
Eu.-N.Atl.-N.Am.
Age Range
Beginning Stage in Treatise Usage:
L.Cret.(Alb.)
Beginning International Stage:
Albian
Fraction Up In Beginning Stage:
0
Beginning Date:
113.2
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Solid, smooth, ovate, periostracum well developed, no lunule or escutcheon, hinge formula, AI AIII 3a I 3b PI/All 2a 2b 4b Pll, with PI elongate, its edge striate, Pll merged into margin, 2a scarcely differentiated from All, well separated from 2b, 1 small, tubercular, 3b broad, bifid, Al and All short, crenulat
References
Schumacher, C. F., 1817, Essai d'un nouveau système des habitations des vers testacés: 287 p., 22 pl. (Copenhagen).
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Arcticacea
Family:
Arcticidae
Formal Genus Name and Reference:
Arctica SCHUMACHER, 1817 [Not preoccupied by Arctica Möhring, 1758 (ICZN, rejected work)]
Type Species:
A.vulgaris ( = Venus islandica LINNÉ, 1767), M
Images
(Click to enlarge in a new window)
Fig. E127,1. *A. islandica (Linné), Plio., Eng., la,b, RV ext., int., X0.3 (Wood, 1853)."
Synonyms
Cyprina, Armida, Asmidia, Nympha, Cypriniadea
Geographic Distribution
Eu.-N.Atl.-N.Am.
Age Range
Beginning Stage in Treatise Usage:
L.Cret.(Alb.)
Beginning International Stage:
Albian
Fraction Up In Beginning Stage:
0
Beginning Date:
113.2
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Solid, smooth, ovate, periostracum well developed, no lunule or escutcheon, hinge formula, AI AIII 3a I 3b PI/All 2a 2b 4b Pll, with PI elongate, its edge striate, Pll merged into margin, 2a scarcely differentiated from All, well separated from 2b, 1 small, tubercular, 3b broad, bifid, Al and All short, crenulat
References
Schumacher, C. F., 1817, Essai d'un nouveau système des habitations des vers testacés: 287 p., 22 pl. (Copenhagen).