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Caspiolla
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cypridacea
Family:
Cyprididae
Subfamily:
Disopontocypridinae
Formal Genus Name and Reference:
Caspiolla MANDELSTAM, 1960 [pro Caspiella Mandelstam, 1956 [non Thiele, 1928)]
Type Species:
Bairdia acronasiita LlVENTAL, 1929
Images
(Click to enlarge in a new window)
Fig. 166,4. *C. acronasiitaa (LIVENTAL), Plio., Caucasus; 4a,b, LV lat., RV Iat., X40; 4c,d, LV int., RV int., X30 (50).
Synonyms
Geographic Distribution
SE.Eu.(Yugosl.Caucasus.)
Age Range
Beginning Stage in Treatise Usage:
Plio.
Beginning International Stage:
Zanclean
Fraction Up In Beginning Stage:
0
Beginning Date:
5.34
Ending Stage in Treatise Usage:
Pleist.
Ending International Stage:
Pleistocene Upper
Fraction Up In Ending Stage:
100
Ending Date:
0.01
Description
Large, irregular reniform; LV larger than RV; anterior end high and broadly curved, posterior end pointed and extended below, truncated above; dorsal margin convex or straight; ventral margin straight to sinuous, margins curved inward mid-ventrally; surface smooth, rarely with angular tubercles; hinge of RV consisting of knifelike valve margin with small step at anterior end ; LV hinge a groove, open at both ends. Inner lamellae broadest anteriorly; porecanal zone narrow. perforated by dense, narrow pore canals located ventrally; adductor muscle scar comprising anteromedian group of 6 spots and 2 additional more anteroventral spots.
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cypridacea
Family:
Cyprididae
Subfamily:
Disopontocypridinae
Formal Genus Name and Reference:
Caspiolla MANDELSTAM, 1960 [pro Caspiella Mandelstam, 1956 [non Thiele, 1928)]
Type Species:
Bairdia acronasiita LlVENTAL, 1929
Images
(Click to enlarge in a new window)
Fig. 166,4. *C. acronasiitaa (LIVENTAL), Plio., Caucasus; 4a,b, LV lat., RV Iat., X40; 4c,d, LV int., RV int., X30 (50).
Synonyms
Geographic Distribution
SE.Eu.(Yugosl.Caucasus.)
Age Range
Beginning Stage in Treatise Usage:
Plio.
Beginning International Stage:
Zanclean
Fraction Up In Beginning Stage:
0
Beginning Date:
5.34
Ending Stage in Treatise Usage:
Pleist.
Ending International Stage:
Pleistocene Upper
Fraction Up In Ending Stage:
100
Ending Date:
0.01
Description
Large, irregular reniform; LV larger than RV; anterior end high and broadly curved, posterior end pointed and extended below, truncated above; dorsal margin convex or straight; ventral margin straight to sinuous, margins curved inward mid-ventrally; surface smooth, rarely with angular tubercles; hinge of RV consisting of knifelike valve margin with small step at anterior end ; LV hinge a groove, open at both ends. Inner lamellae broadest anteriorly; porecanal zone narrow. perforated by dense, narrow pore canals located ventrally; adductor muscle scar comprising anteromedian group of 6 spots and 2 additional more anteroventral spots.