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Allodesma
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Modiomorphoida
Superfamily:
Cycloconchacea
Family:
Allodesmatidae
Formal Genus Name and Reference:
Allodesma ULRICH, 1894, p. 617
Type Species:
Modiolopsis subelliptica ULRICH, 1892, OD
Images
(Click to enlarge in a new window)
Fig. D8, 3. *A. subellipticum (Ulrich), Galena Dol., USA (Minn.), 3a, LV int. mold, X2, 3 b, c, RV and LV hinge, X4 (930)
Synonyms
Geographic Distribution
NE.USA-E.Can.
Age Range
Beginning Stage in Treatise Usage:
M.Ord.
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
M.Ord.
Ending International Stage:
Darriwilian
Fraction Up In Ending Stage:
100
Ending Date:
458.18
Description
Elongate elliptical, hinge with 1 or 2 posterior lateral teeth in each valve, RV with 2 and LV with 1 cardinal tooth, anterior lateral teeth short or lacking, pallial line simple
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Modiomorphoida
Superfamily:
Cycloconchacea
Family:
Allodesmatidae
Formal Genus Name and Reference:
Allodesma ULRICH, 1894, p. 617
Type Species:
Modiolopsis subelliptica ULRICH, 1892, OD
Images
(Click to enlarge in a new window)
Fig. D8, 3. *A. subellipticum (Ulrich), Galena Dol., USA (Minn.), 3a, LV int. mold, X2, 3 b, c, RV and LV hinge, X4 (930)
Synonyms
Geographic Distribution
NE.USA-E.Can.
Age Range
Beginning Stage in Treatise Usage:
M.Ord.
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
M.Ord.
Ending International Stage:
Darriwilian
Fraction Up In Ending Stage:
100
Ending Date:
458.18
Description
Elongate elliptical, hinge with 1 or 2 posterior lateral teeth in each valve, RV with 2 and LV with 1 cardinal tooth, anterior lateral teeth short or lacking, pallial line simple