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Leptodesma
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Pterineidae
Formal Genus Name and Reference:
Leptodesma HALL, 1883, p. 4
Type Species:
L. potens
Images
(Click to enlarge in a new window)
Fig. C35,6. * L. (L.) dekayi (Hall), M.Dev., USA(N.Y.), LV ext., * (377)
Synonyms
Geographic Distribution
M.Sil.-L.Perm., cosmop.
Age Range
Beginning Stage in Treatise Usage:
M.Sil.
Beginning International Stage:
Sheinwoodian
Fraction Up In Beginning Stage:
0
Beginning Date:
432.93
Ending Stage in Treatise Usage:
L.Perm.
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Without radial ornamentation; left umbo more prominent than right; posterior wing commonly well developed; myophoric buttress weak; cardinal teeth few and variable in number.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Pteriomorphia
Order:
Pterioida
Suborder:
Pteriina
Superfamily:
Pteriacea
Family:
Pterineidae
Formal Genus Name and Reference:
Leptodesma HALL, 1883, p. 4
Type Species:
L. potens
Images
(Click to enlarge in a new window)
Fig. C35,6. * L. (L.) dekayi (Hall), M.Dev., USA(N.Y.), LV ext., * (377)
Synonyms
Geographic Distribution
M.Sil.-L.Perm., cosmop.
Age Range
Beginning Stage in Treatise Usage:
M.Sil.
Beginning International Stage:
Sheinwoodian
Fraction Up In Beginning Stage:
0
Beginning Date:
432.93
Ending Stage in Treatise Usage:
L.Perm.
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Without radial ornamentation; left umbo more prominent than right; posterior wing commonly well developed; myophoric buttress weak; cardinal teeth few and variable in number.