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Kobayashites
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Bakevelliidae
Formal Genus Name and Reference:
Kobayashites HAYAMI, 1959, p. 138
Type Species:
*K. hemicylindricus, OD
Images
(Click to enlarge in a new window)
Fig. C42,3. *K. hemicylindricus, LV ext., X2 (392).
Synonyms
Geographic Distribution
Japan
Age Range
Beginning Stage in Treatise Usage:
M.jur.(Bajoc.)
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
0
Beginning Date:
170.9
Ending Stage in Treatise Usage:
M.jur.(Bajoc.)
Ending International Stage:
Bajocian
Fraction Up In Ending Stage:
100
Ending Date:
168.17
Description
Rather small, elongate-rectangular, not oblique, with elongate hinge margin but not alate, beaks subterminal, LV moderately convex, with broadly rounded, slightly protruding umbo and prosogyrous beak, RV almost flat, byssal gape wide, ligamental area narrow, with 4 or more well-separated ligamental pits, each valve with 1 or 2 anterior teeth on hinge plate supported by septum-like thickening below umbo, and weak, elongate posterior tooth, surface smooth
References
Hayami, Itaru, 1959, Late Jurassic isodont and myacid pelecypods from Makito, central Japan: Japanese Jour. Geology \& Geography, v. 30, p. 151-167, pl. 13.
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Bakevelliidae
Formal Genus Name and Reference:
Kobayashites HAYAMI, 1959, p. 138
Type Species:
*K. hemicylindricus, OD
Images
(Click to enlarge in a new window)
Fig. C42,3. *K. hemicylindricus, LV ext., X2 (392).
Synonyms
Geographic Distribution
Japan
Age Range
Beginning Stage in Treatise Usage:
M.jur.(Bajoc.)
Beginning International Stage:
Bajocian
Fraction Up In Beginning Stage:
0
Beginning Date:
170.9
Ending Stage in Treatise Usage:
M.jur.(Bajoc.)
Ending International Stage:
Bajocian
Fraction Up In Ending Stage:
100
Ending Date:
168.17
Description
Rather small, elongate-rectangular, not oblique, with elongate hinge margin but not alate, beaks subterminal, LV moderately convex, with broadly rounded, slightly protruding umbo and prosogyrous beak, RV almost flat, byssal gape wide, ligamental area narrow, with 4 or more well-separated ligamental pits, each valve with 1 or 2 anterior teeth on hinge plate supported by septum-like thickening below umbo, and weak, elongate posterior tooth, surface smooth
References
Hayami, Itaru, 1959, Late Jurassic isodont and myacid pelecypods from Makito, central Japan: Japanese Jour. Geology \& Geography, v. 30, p. 151-167, pl. 13.