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Theriosynoecum
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cytheracea
Family:
Limnocytheridae
Formal Genus Name and Reference:
Theriosynoecum BRANSON, 1936 [pro Morrisonia BRANSON, 1935 (non GROTE, 1874)]
Type Species:
Morrisonia wyomingensis BRANSON, 1935
Images
(Click to enlarge in a new window)
Fig. 239,1. *T. wyomingense (Branson), U.Jur. (Morrison F.), USA(Wyo.), 1a-c, carapace R , dors., vent., X25 (113).
Synonyms
Geographic Distribution
N.Am.-Eu.-Asia
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:
Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Like Cytheridella but with strong nodes on swollen posterior region. Hinge straight and short, ridge of LV fitting groove in RV. [Habitat fresh-water.]
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cytheracea
Family:
Limnocytheridae
Formal Genus Name and Reference:
Theriosynoecum BRANSON, 1936 [pro Morrisonia BRANSON, 1935 (non GROTE, 1874)]
Type Species:
Morrisonia wyomingensis BRANSON, 1935
Images
(Click to enlarge in a new window)
Fig. 239,1. *T. wyomingense (Branson), U.Jur. (Morrison F.), USA(Wyo.), 1a-c, carapace R , dors., vent., X25 (113).
Synonyms
Geographic Distribution
N.Am.-Eu.-Asia
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:
Cret.
Ending International Stage:
Maastrichtian
Fraction Up In Ending Stage:
100
Ending Date:
66.04
Description
Like Cytheridella but with strong nodes on swollen posterior region. Hinge straight and short, ridge of LV fitting groove in RV. [Habitat fresh-water.]