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Orthonotacythere
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cytheracea
Family:
Cytheruridae
Formal Genus Name and Reference:
Orthonotacythere ALEXANDER, 1933
Type Species:
Cytheridea? hannai ISRAELSKY, 1929
Images
(Click to enlarge in a new window)
Fig. 219,10. *O. hannai (Israelsky), Cret., Tex., Ark., 10a,b, LV hinge, RV hinge, X100 (89). -- Fig. 225,1. O. vegranda (Mandelstam), Cret., USSR(Ukraine) (type species of Cytheropterina), 1a-c, carapace R, RV and LV hinge, X94 (50)
Synonyms
Cytheropterina
Geographic Distribution
N.Am.
Age Range
Beginning Stage in Treatise Usage:
Jur.
Beginning International Stage:
Hettangian
Fraction Up In Beginning Stage:
0
Beginning Date:
201.36
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Subquadrangular, dorsal margin almost straight, ventral margin parallel to it, posterodorsal caudal extension present, greatest width ventral, surface with knobs and reticulations. Adductor muscle scars in vertical row of 4; marginal pore canals few, simple, straight, RV hinge with notched terminal tooth plates separated by strongly crenulated furrow.
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cytheracea
Family:
Cytheruridae
Formal Genus Name and Reference:
Orthonotacythere ALEXANDER, 1933
Type Species:
Cytheridea? hannai ISRAELSKY, 1929
Images
(Click to enlarge in a new window)
Fig. 219,10. *O. hannai (Israelsky), Cret., Tex., Ark., 10a,b, LV hinge, RV hinge, X100 (89). -- Fig. 225,1. O. vegranda (Mandelstam), Cret., USSR(Ukraine) (type species of Cytheropterina), 1a-c, carapace R, RV and LV hinge, X94 (50)
Synonyms
Cytheropterina
Geographic Distribution
N.Am.
Age Range
Beginning Stage in Treatise Usage:
Jur.
Beginning International Stage:
Hettangian
Fraction Up In Beginning Stage:
0
Beginning Date:
201.36
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Subquadrangular, dorsal margin almost straight, ventral margin parallel to it, posterodorsal caudal extension present, greatest width ventral, surface with knobs and reticulations. Adductor muscle scars in vertical row of 4; marginal pore canals few, simple, straight, RV hinge with notched terminal tooth plates separated by strongly crenulated furrow.