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Oriocrassatella
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Crassatellacea
Family:
Crassatellidae
Subfamily:
Crassatellinae
Formal Genus Name and Reference:
Oriocrassatella Etheridge, JR., 1907
Type Species:
O. stokesi, OD
Images
(Click to enlarge in a new window)
Fig. E76,4a,b. P. plana (Golovinski), Perm., USSR, 4 a, b, RV int., LV int., X0.7 (1010), Fig. E76,4c. *O. stokesi, W.Australia, RV ext., X0.7 (Dickins, 1956)
Synonyms
Procrassatella
Geographic Distribution
Aus.-Asia-Eu.-New S. Wales - Australia-Indon.-USSR-Greenl.
Age Range
Beginning Stage in Treatise Usage:
U.Carb.
Beginning International Stage:
Bashkirian
Fraction Up In Beginning Stage:
0
Beginning Date:
323.4
Ending Stage in Treatise Usage:
Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Transversely inequilateral, elongated backward. Hinge with 2 strong bifid, 3a long, 3b narrow, 4b curved in front of rather large pit, with postresilial ridge isolating upper part of ligament. Long posterior laterals.
References
Museum or Author Information
Classification
Phylum:
Mollusca
Class:
Bivalvia
Subclass:
Heterodonta
Order:
Veneroida
Superfamily:
Crassatellacea
Family:
Crassatellidae
Subfamily:
Crassatellinae
Formal Genus Name and Reference:
Oriocrassatella Etheridge, JR., 1907
Type Species:
O. stokesi, OD
Images
(Click to enlarge in a new window)
Fig. E76,4a,b. P. plana (Golovinski), Perm., USSR, 4 a, b, RV int., LV int., X0.7 (1010), Fig. E76,4c. *O. stokesi, W.Australia, RV ext., X0.7 (Dickins, 1956)
Synonyms
Procrassatella
Geographic Distribution
Aus.-Asia-Eu.-New S. Wales - Australia-Indon.-USSR-Greenl.
Age Range
Beginning Stage in Treatise Usage:
U.Carb.
Beginning International Stage:
Bashkirian
Fraction Up In Beginning Stage:
0
Beginning Date:
323.4
Ending Stage in Treatise Usage:
Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Transversely inequilateral, elongated backward. Hinge with 2 strong bifid, 3a long, 3b narrow, 4b curved in front of rather large pit, with postresilial ridge isolating upper part of ligament. Long posterior laterals.