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Pontocyprella
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cypridacea
Family:
Paracyprididae
Formal Genus Name and Reference:
Pontocyprella LYUBIMOVA, 1955
Type Species:
*Bairdia harrisiana JONES, 1849
Images
(Click to enlarge in a new window)
Fig. 181,5a,b. *P. harrisiana (Jones), Cret., Eng., 5a,b, carapace L, R, X40 (37). -- Fig. 181,5c,d. P. aktagensis Mandelstam, L.Cret., C.Asia, 5c,d, carapace R lat., dors., X30 (50)
Synonyms
Geographic Distribution
C.Asia-W.Eu.-E.Eu.
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:
Paleog.
Ending International Stage:
Chattian
Fraction Up In Ending Stage:
100
Ending Date:
23.04
Description
Small kidney-shaped, with thickened valves, LV overlapping RV; length about 1 mm, anterior end rounded, extended and angulated above; presumed posterior end narrower, somewhat extended below; dorsal margin convex, ventral margin straight to slightly concave, LV hinge a closed groove with pronounced overhang above, RV hinge formed of knifelike valve edge. Inner lamellae scarcely developed anteriorly; absent elsewhere; pore-canal zone rather broad, with straight, closely spaced canals.
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cypridacea
Family:
Paracyprididae
Formal Genus Name and Reference:
Pontocyprella LYUBIMOVA, 1955
Type Species:
*Bairdia harrisiana JONES, 1849
Images
(Click to enlarge in a new window)
Fig. 181,5a,b. *P. harrisiana (Jones), Cret., Eng., 5a,b, carapace L, R, X40 (37). -- Fig. 181,5c,d. P. aktagensis Mandelstam, L.Cret., C.Asia, 5c,d, carapace R lat., dors., X30 (50)
Synonyms
Geographic Distribution
C.Asia-W.Eu.-E.Eu.
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:
Paleog.
Ending International Stage:
Chattian
Fraction Up In Ending Stage:
100
Ending Date:
23.04
Description
Small kidney-shaped, with thickened valves, LV overlapping RV; length about 1 mm, anterior end rounded, extended and angulated above; presumed posterior end narrower, somewhat extended below; dorsal margin convex, ventral margin straight to slightly concave, LV hinge a closed groove with pronounced overhang above, RV hinge formed of knifelike valve edge. Inner lamellae scarcely developed anteriorly; absent elsewhere; pore-canal zone rather broad, with straight, closely spaced canals.