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Goniophora
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Modiomorphoida
Superfamily:
Modiomorphacea
Family:
Modiomorphidae
Formal Genus Name and Reference:
Goniophora PHILLIPS, 1848, p. 264
Type Species:
Cypricardia cymbaeformis SOWERBY, 1839, OD
Images
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Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
L. Ord.
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
L.Perm.
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Equivalve, rhomboidal to trapezoidal, beaks anterior, curved inward and forward, strong umbonal carina from beaks to posterobasal angle; dentition weak; LV in some species with 1 oblique tooth; anterior adductor deeply impressed and with a strong myophoric buttress behind it.
References
Phillips, John, 1848, The Malvern hills, compared with the Palaeozoic districts of Abberley, Woolhope, May Hill, Tortworth, and Usk: Geol. Survey Great Britain, Mem., v. 2, pt. 1, p. 1-330.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Modiomorphoida
Superfamily:
Modiomorphacea
Family:
Modiomorphidae
Formal Genus Name and Reference:
Goniophora PHILLIPS, 1848, p. 264
Type Species:
Cypricardia cymbaeformis SOWERBY, 1839, OD
Images
(Click to enlarge in a new window)Synonyms
Geographic Distribution
cosmop.
Age Range
Beginning Stage in Treatise Usage:
L. Ord.
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
L.Perm.
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Equivalve, rhomboidal to trapezoidal, beaks anterior, curved inward and forward, strong umbonal carina from beaks to posterobasal angle; dentition weak; LV in some species with 1 oblique tooth; anterior adductor deeply impressed and with a strong myophoric buttress behind it.
References
Phillips, John, 1848, The Malvern hills, compared with the Palaeozoic districts of Abberley, Woolhope, May Hill, Tortworth, and Usk: Geol. Survey Great Britain, Mem., v. 2, pt. 1, p. 1-330.