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Suchonella
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cypridacea
Family:
Cypridacea - Family uncertain
Formal Genus Name and Reference:
Suchonella SPIZHARSKY, 1937
Type Species:
S. typica
Images
(Click to enlarge in a new window)
Fig. 182B,2. *S. typica, Suchonai-N. Dvina Basin, USSR, 2ab, carapace R, vent., X35 (338) Swain.
Synonyms
Geographic Distribution
Kuznetsk Basin, Sib.
Age Range
Beginning Stage in Treatise Usage:
L.Trias. (topmost Tatar.) [NOTE: confusing entry, because "Tatarian" is U.Perm.?]
Beginning International Stage:
Induan
Fraction Up In Beginning Stage:
0
Beginning Date:
251.9
Ending Stage in Treatise Usage:
L.Trias. (topmost Tatar.) [NOTE: confusing entry, because "Tatarian" is U.Perm.?]
Ending International Stage:
Olenekian
Fraction Up In Ending Stage:
100
Ending Date:
246.7
Description
Dorsum strongly arched, ventral margin straight, somewhat concave in front, widely wedge-shaped in dorsal view; posteroventral lateral surface with broad protuberance or smaller elevated horn; LV larger than RV, overlapping it on ventral and posterior margins. Hinge of RV with hemicylindrical groove corresponding to bar on LV; middle of valve marked by thickening, which separates front half from rear where eggs probably were accommodated; muscle imprint located in front half of valve defined as round spot in which weak ridges and grooves radiate from center. [Fresh-water.]
References
Museum or Author Information
Classification
Phylum:
Arthropoda
Subphylum:
Crustacea (superclass)
Class:
Ostracoda
Order:
Podocopida
Suborder:
Podocopina
Superfamily:
Cypridacea
Family:
Cypridacea - Family uncertain
Formal Genus Name and Reference:
Suchonella SPIZHARSKY, 1937
Type Species:
S. typica
Images
(Click to enlarge in a new window)
Fig. 182B,2. *S. typica, Suchonai-N. Dvina Basin, USSR, 2ab, carapace R, vent., X35 (338) Swain.
Synonyms
Geographic Distribution
Kuznetsk Basin, Sib.
Age Range
Beginning Stage in Treatise Usage:
L.Trias. (topmost Tatar.) [NOTE: confusing entry, because "Tatarian" is U.Perm.?]
Beginning International Stage:
Induan
Fraction Up In Beginning Stage:
0
Beginning Date:
251.9
Ending Stage in Treatise Usage:
L.Trias. (topmost Tatar.) [NOTE: confusing entry, because "Tatarian" is U.Perm.?]
Ending International Stage:
Olenekian
Fraction Up In Ending Stage:
100
Ending Date:
246.7
Description
Dorsum strongly arched, ventral margin straight, somewhat concave in front, widely wedge-shaped in dorsal view; posteroventral lateral surface with broad protuberance or smaller elevated horn; LV larger than RV, overlapping it on ventral and posterior margins. Hinge of RV with hemicylindrical groove corresponding to bar on LV; middle of valve marked by thickening, which separates front half from rear where eggs probably were accommodated; muscle imprint located in front half of valve defined as round spot in which weak ridges and grooves radiate from center. [Fresh-water.]