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Utschamiella
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Unionoida (Freshwater mussels and relatives)
Superfamily:
Anthracosiacea
Family:
Pseudocardiniidae
Formal Genus Name and Reference:
Utschamiella LUMKEVICH et al., 1960, p. 99
Type Species:
U. tungussica RAGOZIN, 1938; OD
Images
(Click to enlarge in a new window)
Fig. D13,2. *U. tungussica, L.Jur.(Lias.), Sib.(Tungusska basin), LV ext., X1.5 (Ragozin, 1938).
Synonyms
Geographic Distribution
USSR (Sib.), C.Asia, E.Asia
Age Range
Beginning Stage in Treatise Usage:
L.jur.
Beginning International Stage:
Hettangian
Fraction Up In Beginning Stage:
0
Beginning Date:
201.36
Ending Stage in Treatise Usage:
M.Jur.(mainly Lias.)
Ending International Stage:
Toarcian
Fraction Up In Ending Stage:
100
Ending Date:
174.7
Description
Shell about 10-20 mm long when full-grown, oblong, strongly inequilateral, with unprotruding, prosogyrous umbones placed near anterior end, inflation moderate, obtuse angulation commonly runs from umbo to posteroventral angle of shell, dentition unknown
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Unionoida (Freshwater mussels and relatives)
Superfamily:
Anthracosiacea
Family:
Pseudocardiniidae
Formal Genus Name and Reference:
Utschamiella LUMKEVICH et al., 1960, p. 99
Type Species:
U. tungussica RAGOZIN, 1938; OD
Images
(Click to enlarge in a new window)
Fig. D13,2. *U. tungussica, L.Jur.(Lias.), Sib.(Tungusska basin), LV ext., X1.5 (Ragozin, 1938).
Synonyms
Geographic Distribution
USSR (Sib.), C.Asia, E.Asia
Age Range
Beginning Stage in Treatise Usage:
L.jur.
Beginning International Stage:
Hettangian
Fraction Up In Beginning Stage:
0
Beginning Date:
201.36
Ending Stage in Treatise Usage:
M.Jur.(mainly Lias.)
Ending International Stage:
Toarcian
Fraction Up In Ending Stage:
100
Ending Date:
174.7
Description
Shell about 10-20 mm long when full-grown, oblong, strongly inequilateral, with unprotruding, prosogyrous umbones placed near anterior end, inflation moderate, obtuse angulation commonly runs from umbo to posteroventral angle of shell, dentition unknown