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Volganella
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Metacopina
Superfamily:
Healdiacea
Family:
Cavellinidae?
Formal Genus Name and Reference:
Volganella Sharapova & MANDELSTAM, 1956
Type Species:
Volganella magna SPIZHARSKY, 1956
Images
(Click to enlarge in a new window)
Fig. 291,2. *V. magna Spizharsky, LV lat., X40 (50). -- Fig. 292,1. V. spizharskyi, RV lat., X35 (50)
Synonyms
Geographic Distribution
USSR(Sukhon Basin)
Age Range
Beginning Stage in Treatise Usage:
U.Perm.
Beginning International Stage:
Wuchiapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
259.55
Ending Stage in Treatise Usage:
U.Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Usually large, irregularly oval, with broadly rounded anterior, posteriorly convergent dorsal and ventral margins and narrowly rounded posterior margin, dorsal margin almost straight or faintly convex, ventral margin straight to faintly concave; surface smooth, moderately convex, greatest convexity posteroventral from center; RV slightly overlapping LV. Zone of concrescence narrow, Iine of concrescence coinciding with inner margin; vestibule and eye spots lacking; RV hinge with thin, knifelike bar that fits below dorsal margin of LV. [Fresh-water.)
References
Mandelstam, M. I., et al., 1956, Ostracoda: All-Union Sci. Res. Geol. Inst. (VSEGEI), Contr. Paleont., new ser., no. 12, Ostracodes, p. 87-144, pl. 19-27, fig. 16-53 (Moscow).
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Metacopina
Superfamily:
Healdiacea
Family:
Cavellinidae?
Formal Genus Name and Reference:
Volganella Sharapova & MANDELSTAM, 1956
Type Species:
Volganella magna SPIZHARSKY, 1956
Images
(Click to enlarge in a new window)
Fig. 291,2. *V. magna Spizharsky, LV lat., X40 (50). -- Fig. 292,1. V. spizharskyi, RV lat., X35 (50)
Synonyms
Geographic Distribution
USSR(Sukhon Basin)
Age Range
Beginning Stage in Treatise Usage:
U.Perm.
Beginning International Stage:
Wuchiapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
259.55
Ending Stage in Treatise Usage:
U.Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Usually large, irregularly oval, with broadly rounded anterior, posteriorly convergent dorsal and ventral margins and narrowly rounded posterior margin, dorsal margin almost straight or faintly convex, ventral margin straight to faintly concave; surface smooth, moderately convex, greatest convexity posteroventral from center; RV slightly overlapping LV. Zone of concrescence narrow, Iine of concrescence coinciding with inner margin; vestibule and eye spots lacking; RV hinge with thin, knifelike bar that fits below dorsal margin of LV. [Fresh-water.)
References
Mandelstam, M. I., et al., 1956, Ostracoda: All-Union Sci. Res. Geol. Inst. (VSEGEI), Contr. Paleont., new ser., no. 12, Ostracodes, p. 87-144, pl. 19-27, fig. 16-53 (Moscow).