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Bythocypris
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Bairdiacea
Family:
Bairdiidae
Formal Genus Name and Reference:
Bythocypris BRADY, 1880
Type Species:
B. reniformis (=Bairdia bosquetiana BRADY, 1866)
Images
(Click to enlarge in a new window)
Fig. 144,4. *B. reniformis, Rec., 4a-c, carapace L, dors., RV lat., N.Atl., X50 (13), 4d, carapace vent., X40 (13), 4e, LV, from ext., X40 (53).
Synonyms
Geographic Distribution
cosmop
Age Range
Beginning Stage in Treatise Usage:
L.Ord., Rec.
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Carapace reniform in lateral view, with straighter venter and more rounded dorsum and extremities, mostly lacking angulation and asymmetry of Bairdia, but with similar overlap and overreach, ridge-and-groove hinge, duplicature, vestibule, and associated structures, including muscle scar (53). [Many modern species are defined partly on the basis of soft parts, whereas numerous Paleozoic species do not exhibit the muscle scar and marginal structure of Recent Bairdia and other Bairdiidae. Altogether, the genus is in an unsatisfactory condition, nearly all Paleozoic species being doubtfully assigned to it.]
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Bairdiacea
Family:
Bairdiidae
Formal Genus Name and Reference:
Bythocypris BRADY, 1880
Type Species:
B. reniformis (=Bairdia bosquetiana BRADY, 1866)
Images
(Click to enlarge in a new window)
Fig. 144,4. *B. reniformis, Rec., 4a-c, carapace L, dors., RV lat., N.Atl., X50 (13), 4d, carapace vent., X40 (13), 4e, LV, from ext., X40 (53).
Synonyms
Geographic Distribution
cosmop
Age Range
Beginning Stage in Treatise Usage:
L.Ord., Rec.
Beginning International Stage:
Tremadocian
Fraction Up In Beginning Stage:
0
Beginning Date:
486.85
Ending Stage in Treatise Usage:
Rec.
Ending International Stage:
Meghalayan
Fraction Up In Ending Stage:
100
Ending Date:
0
Description
Carapace reniform in lateral view, with straighter venter and more rounded dorsum and extremities, mostly lacking angulation and asymmetry of Bairdia, but with similar overlap and overreach, ridge-and-groove hinge, duplicature, vestibule, and associated structures, including muscle scar (53). [Many modern species are defined partly on the basis of soft parts, whereas numerous Paleozoic species do not exhibit the muscle scar and marginal structure of Recent Bairdia and other Bairdiidae. Altogether, the genus is in an unsatisfactory condition, nearly all Paleozoic species being doubtfully assigned to it.]