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Thyasira
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Lucinacea
Family:
Thyasiridae
Formal Genus Name and Reference:
Thyasira Leach in LAMARCK, 1818
Type Species:
*Amphidesma flexuosa Lamarck, 1818 (=*Tellina flexuosa MONTAGU, 1803), OD
Images
(Click to enlarge in a new window)
Fig. E13,1; E14,8. *T. (T.) flexuosa (MONTAGU), Rec., Medit.; E13,1, RV int., X1 (305); Fig. E14,8, RV hinge, X1 (513).
Synonyms
Axinus, Cryptodon, Bequania, Ptychina, Prothyasira
Geographic Distribution
Eu.-N.Am.-Pac.-Australia
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:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Obliquely trigonal, with sharp dorsal folds and well-marked posterior area. Concentrically sculptured.
References
Lamarck, J. B. de, 1818-19, Histoire naturelle des animaux sans vertèbres: v. 5,612 p; v. 6, no. 1, 343 p. (Paris).
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Lucinacea
Family:
Thyasiridae
Formal Genus Name and Reference:
Thyasira Leach in LAMARCK, 1818
Type Species:
*Amphidesma flexuosa Lamarck, 1818 (=*Tellina flexuosa MONTAGU, 1803), OD
Images
(Click to enlarge in a new window)
Fig. E13,1; E14,8. *T. (T.) flexuosa (MONTAGU), Rec., Medit.; E13,1, RV int., X1 (305); Fig. E14,8, RV hinge, X1 (513).
Synonyms
Axinus, Cryptodon, Bequania, Ptychina, Prothyasira
Geographic Distribution
Eu.-N.Am.-Pac.-Australia
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:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Obliquely trigonal, with sharp dorsal folds and well-marked posterior area. Concentrically sculptured.
References
Lamarck, J. B. de, 1818-19, Histoire naturelle des animaux sans vertèbres: v. 5,612 p; v. 6, no. 1, 343 p. (Paris).