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Tomiella
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cytheracea
Family:
Tomiellidae
Formal Genus Name and Reference:
Tomiella SPIZHARSKY, 1937
Type Species:
T. yavorskyi (=*Kirkbya oblongata JAISHEVSKY, 1927)
Images
(Click to enlarge in a new window)
Fig. 258,1. *T. oblongata (Jaishevsky), Kuznetsk, 1a, RV lat., X20. (337), 1b, RV lat. (?another specimen), X43 (238).
Synonyms
Geographic Distribution
USSR (Kuznetsk-Tungus region)
Age Range
Beginning Stage in Treatise Usage:
Perm.
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Anterior end rounded, commonly higher than posterior end, dorsal margin straight, ventral margin concave, valves with submedian transverse groove, usually obliquely rounded toward rear, some species with tubercle in front of this groove. Muscle scars on interior ridge that corresponds to external groove, 4 elongate scars (much like those of Timiriasevia) in oblique row; radial pore canals better developed in anterior end, inner lamella weak ; LV hinge with narrow, smooth groove, slightly widened anteriorly into which fits sharp dorsal margin of RV.
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cytheracea
Family:
Tomiellidae
Formal Genus Name and Reference:
Tomiella SPIZHARSKY, 1937
Type Species:
T. yavorskyi (=*Kirkbya oblongata JAISHEVSKY, 1927)
Images
(Click to enlarge in a new window)
Fig. 258,1. *T. oblongata (Jaishevsky), Kuznetsk, 1a, RV lat., X20. (337), 1b, RV lat. (?another specimen), X43 (238).
Synonyms
Geographic Distribution
USSR (Kuznetsk-Tungus region)
Age Range
Beginning Stage in Treatise Usage:
Perm.
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Perm.
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Anterior end rounded, commonly higher than posterior end, dorsal margin straight, ventral margin concave, valves with submedian transverse groove, usually obliquely rounded toward rear, some species with tubercle in front of this groove. Muscle scars on interior ridge that corresponds to external groove, 4 elongate scars (much like those of Timiriasevia) in oblique row; radial pore canals better developed in anterior end, inner lamella weak ; LV hinge with narrow, smooth groove, slightly widened anteriorly into which fits sharp dorsal margin of RV.