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Cytherella
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Platycopina
Family:
Cytherellidae
Formal Genus Name and Reference:
Cytherella JONES, 1849
Type Species:
Cytherina ovata Roemer, 1840, SD ULRICH, 1894
Images
(Click to enlarge in a new window)
Fig. 309,1. *C. (C.) abyssorum Sars, Neog., Br. Is., 1a,b, female carapace L, dors., 1c,d, male carapace R , dors., all X38 (312)
Synonyms
Morrowina
Geographic Distribution
cosmop.
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
Carapace small to moderately large, thick-shelled, surface smooth or ornamented with pits or ribs; RV larger than LV, its margin being grooved all around; shape and ornament of opposite valves commonly different. LV hinge with dorsal ridge, RV with corresponding furrow; no marginal pore canals, although norma) canals in marginal area may resemble them. !ur.-Rcc., world-wide.
References
Jones, T. R., 1849, A monograph of the Entomostraca of the Cretaceous Formation of England: Palacontogr. Soc., Mon., 1849, 40 p., 7 pl. (London).
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Platycopina
Family:
Cytherellidae
Formal Genus Name and Reference:
Cytherella JONES, 1849
Type Species:
Cytherina ovata Roemer, 1840, SD ULRICH, 1894
Images
(Click to enlarge in a new window)
Fig. 309,1. *C. (C.) abyssorum Sars, Neog., Br. Is., 1a,b, female carapace L, dors., 1c,d, male carapace R , dors., all X38 (312)
Synonyms
Morrowina
Geographic Distribution
cosmop.
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
Carapace small to moderately large, thick-shelled, surface smooth or ornamented with pits or ribs; RV larger than LV, its margin being grooved all around; shape and ornament of opposite valves commonly different. LV hinge with dorsal ridge, RV with corresponding furrow; no marginal pore canals, although norma) canals in marginal area may resemble them. !ur.-Rcc., world-wide.
References
Jones, T. R., 1849, A monograph of the Entomostraca of the Cretaceous Formation of England: Palacontogr. Soc., Mon., 1849, 40 p., 7 pl. (London).