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Pseudohyria
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Unionoida (Freshwater mussels and relatives)
Superfamily:
Unionacea (freshwater mussels)
Family:
Unionidae
Subfamily:
Hyriinae
Formal Genus Name and Reference:
Pseudohyria MACNEIL, 1936
Type Species:
P. gobiensis, OD
Images
(Click to enlarge in a new window)
Fig. D53,3. *P. gobiensis; RV ext., X1 (569)
Synonyms
Geographic Distribution
Asia(Inner Mongol.)
Age Range
Beginning Stage in Treatise Usage:
Cret.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Subquadrate, rounded anteriorly, somewhat angulate posteriorly, broadly arcuate ventrally, beaks about central, prominent, their sculpture unknown, surface sculptured with well-defined slightly elevated radial ribs that enlarge posteriorly and crenulate margin deeply; shell thicker in front than behind; cardinals moderately heavy, elongate, double in RV and single in LV, bounded anteriorly by impressed adductor scar; lamellar teeth not well known, apparently short and curved; ligament short.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Palaeoheterodonta
Order:
Unionoida (Freshwater mussels and relatives)
Superfamily:
Unionacea (freshwater mussels)
Family:
Unionidae
Subfamily:
Hyriinae
Formal Genus Name and Reference:
Pseudohyria MACNEIL, 1936
Type Species:
P. gobiensis, OD
Images
(Click to enlarge in a new window)
Fig. D53,3. *P. gobiensis; RV ext., X1 (569)
Synonyms
Geographic Distribution
Asia(Inner Mongol.)
Age Range
Beginning Stage in Treatise Usage:
Cret.
Beginning International Stage:
Berriasian
Fraction Up In Beginning Stage:
0
Beginning Date:
143.1
Ending Stage in Treatise Usage:
Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Subquadrate, rounded anteriorly, somewhat angulate posteriorly, broadly arcuate ventrally, beaks about central, prominent, their sculpture unknown, surface sculptured with well-defined slightly elevated radial ribs that enlarge posteriorly and crenulate margin deeply; shell thicker in front than behind; cardinals moderately heavy, elongate, double in RV and single in LV, bounded anteriorly by impressed adductor scar; lamellar teeth not well known, apparently short and curved; ligament short.