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Urushtenia
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Aulostegoidea
Family:
Aulostegidae
Formal Genus Name and Reference:
Urushtenia LICHAREW, 1935, p. 370
Type Species:
Productus pseudomedusa CHERNYSCHEV, 1902, p. 293, OD
Images
(Click to enlarge in a new window)
Fig. 422, 3a–e. *U. pseudomedusa (TSCHERNYSCHEW ); a, specimen viewed ventrally, Sakmarian, Schwagerina Limestone, Ural Mountains, × 2; b, specimen viewed dorsally, Sakmarian, Schwagerina Limestone, Ural Mountains, × 1; c,d, specimen viewed posteriorly, laterally, Kasarmensky Kamen, Russia, ×2 (Muir-Wood & Cooper, 1960); e, dorsal valve interior, Kasarmensky Kamen, Russia, × 2.5 (Sarytcheva & Grunt, 1969).
Synonyms
Geographic Distribution
Russia, China
Age Range
Beginning Stage in Treatise Usage:
Lower Permian (Asselian)
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Lower Permian (Sakmarian)
Ending International Stage:
Sakmarian
Fraction Up In Ending Stage:
100
Ending Date:
290.51
Description
Small, transverse with planoconvex flattened corpus, geniculate with trails, ventral interarea short, cicatrix small, ribbing starts on disks, prominent on trails, rugae narrow on disks, spines distributed on both disks, fine dorsally, spinose marginal ridges, gutters of trails resembling Chonesteges.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Aulostegoidea
Family:
Aulostegidae
Formal Genus Name and Reference:
Urushtenia LICHAREW, 1935, p. 370
Type Species:
Productus pseudomedusa CHERNYSCHEV, 1902, p. 293, OD
Images
(Click to enlarge in a new window)
Fig. 422, 3a–e. *U. pseudomedusa (TSCHERNYSCHEW ); a, specimen viewed ventrally, Sakmarian, Schwagerina Limestone, Ural Mountains, × 2; b, specimen viewed dorsally, Sakmarian, Schwagerina Limestone, Ural Mountains, × 1; c,d, specimen viewed posteriorly, laterally, Kasarmensky Kamen, Russia, ×2 (Muir-Wood & Cooper, 1960); e, dorsal valve interior, Kasarmensky Kamen, Russia, × 2.5 (Sarytcheva & Grunt, 1969).
Synonyms
Geographic Distribution
Russia, China
Age Range
Beginning Stage in Treatise Usage:
Lower Permian (Asselian)
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Lower Permian (Sakmarian)
Ending International Stage:
Sakmarian
Fraction Up In Ending Stage:
100
Ending Date:
290.51
Description
Small, transverse with planoconvex flattened corpus, geniculate with trails, ventral interarea short, cicatrix small, ribbing starts on disks, prominent on trails, rugae narrow on disks, spines distributed on both disks, fine dorsally, spinose marginal ridges, gutters of trails resembling Chonesteges.