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Pteroperna
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Pteriidae
Formal Genus Name and Reference:
Pteroperna Morris & LYCETT, 1853, p. 16
Type Species:
Gervillia costatula EUDES-DESLONGCHAMPS, 1824, p. 131, OD
Images
(Click to enlarge in a new window)
Fig. C39,4a. *P. costatula (Eudes-Deslongchamps), M.Jur.(Bathon.), Eng., RV int., X1 (Cox, n), Fig. C39,46. P. plana Lycett, M. Jur.(Bajoc.), Eng., RV ext., X1 (Cox, n)
Synonyms
Geographic Distribution
U.Trias., Malaya, Jur., cosmop.
Age Range
Beginning Stage in Treatise Usage:
U.Trias., Jur.
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
U.Trias., Jur.
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
Oblique, bialate, with posterior wing sharply pointed, inequivalve, LV umbo more or less protruding, hinge margin thickened and transversely crenulated anteriorly, posterior wing with up to 4 external longitudinal grooves, lowest of which correspond to internal teeth, radial ribs present on earlier growth stages in some species
References
Morris, John, \& Lycett, John Morretes, F. L. de, 1853-54, A monograph of the Mollusca from the Great Oolite, chiefly from Minchinhampton and the coast of Yorkshire, part II, Bivalves: Palaeontograph. Soc. London, $147 \mathrm{p} ., 15 \mathrm{pl}$.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Pteriidae
Formal Genus Name and Reference:
Pteroperna Morris & LYCETT, 1853, p. 16
Type Species:
Gervillia costatula EUDES-DESLONGCHAMPS, 1824, p. 131, OD
Images
(Click to enlarge in a new window)
Fig. C39,4a. *P. costatula (Eudes-Deslongchamps), M.Jur.(Bathon.), Eng., RV int., X1 (Cox, n), Fig. C39,46. P. plana Lycett, M. Jur.(Bajoc.), Eng., RV ext., X1 (Cox, n)
Synonyms
Geographic Distribution
U.Trias., Malaya, Jur., cosmop.
Age Range
Beginning Stage in Treatise Usage:
U.Trias., Jur.
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
U.Trias., Jur.
Ending International Stage:
Rhaetian
Fraction Up In Ending Stage:
100
Ending Date:
201.36
Description
Oblique, bialate, with posterior wing sharply pointed, inequivalve, LV umbo more or less protruding, hinge margin thickened and transversely crenulated anteriorly, posterior wing with up to 4 external longitudinal grooves, lowest of which correspond to internal teeth, radial ribs present on earlier growth stages in some species
References
Morris, John, \& Lycett, John Morretes, F. L. de, 1853-54, A monograph of the Mollusca from the Great Oolite, chiefly from Minchinhampton and the coast of Yorkshire, part II, Bivalves: Palaeontograph. Soc. London, $147 \mathrm{p} ., 15 \mathrm{pl}$.