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Abiella
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Unionoida (Freshwater mussels and relatives)
Superfamily:
Anthracosiacea
Family:
Microdontidae
Formal Genus Name and Reference:
Abiella RAGOZIN, 1955
Type Species:
Posidonomya concinna Jones, 1901; OD
Images
(Click to enlarge in a new window)
Fig. D11,2. *A. concinna (Jones), RV ext., X3 (Ragozin, 1955)
Synonyms
Geographic Distribution
USSR(Sib.)
Age Range
Beginning Stage in Treatise Usage:
Perm.
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Like Microdontella, but apparently lacking microdont dentition, straight anterior and posterior parts of short hinge line meeting in wide angle at umbo
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Unionoida (Freshwater mussels and relatives)
Superfamily:
Anthracosiacea
Family:
Microdontidae
Formal Genus Name and Reference:
Abiella RAGOZIN, 1955
Type Species:
Posidonomya concinna Jones, 1901; OD
Images
(Click to enlarge in a new window)
Fig. D11,2. *A. concinna (Jones), RV ext., X3 (Ragozin, 1955)
Synonyms
Geographic Distribution
USSR(Sib.)
Age Range
Beginning Stage in Treatise Usage:
Perm.
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Like Microdontella, but apparently lacking microdont dentition, straight anterior and posterior parts of short hinge line meeting in wide angle at umbo