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Permiana
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cytheracea
Family:
Permianidae
Formal Genus Name and Reference:
Permiana SCHNEIDER, 1947
Type Species:
P. oblonga SCHNEIDER, 1947
Images
(Click to enlarge in a new window)
Fig. 247, 1a-d. *P. oblonga SCHNEIDER, Volga region; 1a,b, LV lat., vent., X45; 1c,d, LV and RV hinge, X53 (Schneider, 1947). -- Fig. 247,1e. P. tuberculata KASHEVAROVA, N.Dvina Basin; LV lat., X43 (192). -- Fig. 247,1f,g. P. carnuta KASHEYAROYA, Troitsk-Petchora; 1f,g, RV lat., vent., X43 (192).
Synonyms
Geographic Distribution
Eu.(USSR)-W.Afr.(Nigeria)
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
Carapace elongate rectangular, with almost parallel, slightly concave ventral and dorsal margins and broadly, slightly uneven rounded anterior and posterior margins; RV overlapping LV weakly along dorsal margin, valves swollen ventrally with posteroventral winglike process, surface smooth, pitted or bearing small spines. Hinge simple, LV hinge with median furrow having steplike sides and weak terminal thickenings corresponding to teeth, RV with shallow terminal impressions.
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cytheracea
Family:
Permianidae
Formal Genus Name and Reference:
Permiana SCHNEIDER, 1947
Type Species:
P. oblonga SCHNEIDER, 1947
Images
(Click to enlarge in a new window)
Fig. 247, 1a-d. *P. oblonga SCHNEIDER, Volga region; 1a,b, LV lat., vent., X45; 1c,d, LV and RV hinge, X53 (Schneider, 1947). -- Fig. 247,1e. P. tuberculata KASHEVAROVA, N.Dvina Basin; LV lat., X43 (192). -- Fig. 247,1f,g. P. carnuta KASHEYAROYA, Troitsk-Petchora; 1f,g, RV lat., vent., X43 (192).
Synonyms
Geographic Distribution
Eu.(USSR)-W.Afr.(Nigeria)
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
Carapace elongate rectangular, with almost parallel, slightly concave ventral and dorsal margins and broadly, slightly uneven rounded anterior and posterior margins; RV overlapping LV weakly along dorsal margin, valves swollen ventrally with posteroventral winglike process, surface smooth, pitted or bearing small spines. Hinge simple, LV hinge with median furrow having steplike sides and weak terminal thickenings corresponding to teeth, RV with shallow terminal impressions.