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Iniathyris
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Athyridida
Superfamily:
Athyridoidea
Family:
Athyrididae
Formal Genus Name and Reference:
Iniathyris BEZNOSOVA, 1963, p. 312
Type Species:
I. topkensis, OD
Images
(Click to enlarge in a new window)
Fig. 1047, 1ad. *I. topkensis, Kuznetsk basin, holotype, dorsal, ventral, lateral, and posterior views, PIN 760/4470, x1$ (Beznosova, 1963).
Synonyms
Geographic Distribution
Russia (Kuznetsk basin), Kazakhstan, China, USA (Iowa)
Age Range
Beginning Stage in Treatise Usage:
Lower Carboniferous (Tournaisian)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Lower Carboniferous (Tournaisian)
Ending International Stage:
Tournaisian
Fraction Up In Ending Stage:
100
Ending Date:
346.73
Description
Externally similar to Composita, ventral interior, dental plates, and greatly thickened umbonal region as in Nordathyris, but without prismatic layer and having less impressed muscle field, dorsal interior and spiralium poorly known. Lower Carboniferous (Tournaisian): Russia (Kuznetsk basin), Kazakhstan, China, USA (Iowa).
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Athyridida
Superfamily:
Athyridoidea
Family:
Athyrididae
Formal Genus Name and Reference:
Iniathyris BEZNOSOVA, 1963, p. 312
Type Species:
I. topkensis, OD
Images
(Click to enlarge in a new window)
Fig. 1047, 1ad. *I. topkensis, Kuznetsk basin, holotype, dorsal, ventral, lateral, and posterior views, PIN 760/4470, x1$ (Beznosova, 1963).
Synonyms
Geographic Distribution
Russia (Kuznetsk basin), Kazakhstan, China, USA (Iowa)
Age Range
Beginning Stage in Treatise Usage:
Lower Carboniferous (Tournaisian)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Lower Carboniferous (Tournaisian)
Ending International Stage:
Tournaisian
Fraction Up In Ending Stage:
100
Ending Date:
346.73
Description
Externally similar to Composita, ventral interior, dental plates, and greatly thickened umbonal region as in Nordathyris, but without prismatic layer and having less impressed muscle field, dorsal interior and spiralium poorly known. Lower Carboniferous (Tournaisian): Russia (Kuznetsk basin), Kazakhstan, China, USA (Iowa).