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Cytherissa
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cytheracea
Family:
Cytherideidae
Subfamily:
Neocytherideidinae
Formal Genus Name and Reference:
Cytherissa SARS, 1925
Type Species:
Cythere lacustris SARS, 1863
Images
(Click to enlarge in a new window)
Fig. 213, 2. *C. lacustris (Sars), Rec., Norway, 2a,b, carapace L, dors., X60 (314).
Synonyms
Alexandrella
Geographic Distribution
Oligo. (Belg.)-Rec.(Eu.-Asia), recorded in glacial lakes of Scot., Norway, Swed., Sib.(Baikal
Age Range
Beginning Stage in Treatise Usage:
Oligo.-Rec.
Beginning International Stage:
Rupelian
Fraction Up In Beginning Stage:
0
Beginning Date:
33.9
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Shape of carapace variable but generally resembling Cytheridea, in some species more rectangular both in lateral and end views. Hinge with terminal noncrenulate blades, weak; marginal areas narrow, with radial canals arranged in groups of 4, muscle scars as in Cytheridea (18, 68, 220).
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cytheracea
Family:
Cytherideidae
Subfamily:
Neocytherideidinae
Formal Genus Name and Reference:
Cytherissa SARS, 1925
Type Species:
Cythere lacustris SARS, 1863
Images
(Click to enlarge in a new window)
Fig. 213, 2. *C. lacustris (Sars), Rec., Norway, 2a,b, carapace L, dors., X60 (314).
Synonyms
Alexandrella
Geographic Distribution
Oligo. (Belg.)-Rec.(Eu.-Asia), recorded in glacial lakes of Scot., Norway, Swed., Sib.(Baikal
Age Range
Beginning Stage in Treatise Usage:
Oligo.-Rec.
Beginning International Stage:
Rupelian
Fraction Up In Beginning Stage:
0
Beginning Date:
33.9
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Shape of carapace variable but generally resembling Cytheridea, in some species more rectangular both in lateral and end views. Hinge with terminal noncrenulate blades, weak; marginal areas narrow, with radial canals arranged in groups of 4, muscle scars as in Cytheridea (18, 68, 220).