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Parainoceramus
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Inoceramidae
Formal Genus Name and Reference:
Parainoceramus VORONETZ, 1936, p. 23
Type Species:
*P. bulkurensis, SD COX, 1954, p. 47
Images
(Click to enlarge in a new window)
Fig. C48,4. P. substriatus (von Münster), L.Jur.(L.Lias.), Ger., both valves, X1 (341b).
Synonyms
Geographic Distribution
cosmop
Age Range
Beginning Stage in Treatise Usage:
U.Trias.
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
Jur.
Ending International Stage:
Tithonian
Fraction Up In Ending Stage:
100
Ending Date:
143.1
Description
Small to medium-sized, equivalve, of moderate convexity, rectangular or trapeziform, posteriorly subalate, umbones protruding only slightly above hinge margin, beaks subterminal, anterior face of shell more or less impressed, ligamental area flat, pits numerous, short anterior and elongate posterior teeth present in some species, at least in early growth stages, surface smooth or with weak concentric plications
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Inoceramidae
Formal Genus Name and Reference:
Parainoceramus VORONETZ, 1936, p. 23
Type Species:
*P. bulkurensis, SD COX, 1954, p. 47
Images
(Click to enlarge in a new window)
Fig. C48,4. P. substriatus (von Münster), L.Jur.(L.Lias.), Ger., both valves, X1 (341b).
Synonyms
Geographic Distribution
cosmop
Age Range
Beginning Stage in Treatise Usage:
U.Trias.
Beginning International Stage:
Carnian
Fraction Up In Beginning Stage:
0
Beginning Date:
237
Ending Stage in Treatise Usage:
Jur.
Ending International Stage:
Tithonian
Fraction Up In Ending Stage:
100
Ending Date:
143.1
Description
Small to medium-sized, equivalve, of moderate convexity, rectangular or trapeziform, posteriorly subalate, umbones protruding only slightly above hinge margin, beaks subterminal, anterior face of shell more or less impressed, ligamental area flat, pits numerous, short anterior and elongate posterior teeth present in some species, at least in early growth stages, surface smooth or with weak concentric plications