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Ella
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Brachythyridoidea
Family:
Brachythyrididae
Formal Genus Name and Reference:
Ella FREDERIKS, 1918a, p. 87
Type Species:
Martinia simensis CHERNYSHEV, 1902, p. 569, OD
Images
(Click to enlarge in a new window)
Fig. 1207, 5a-d. *E. simensis (ChernySHEV), Urals, syntype, ventral, dorsal, anterior, and lateral views, X2 (new).
Synonyms
Geographic Distribution
Russia
Age Range
Beginning Stage in Treatise Usage:
Permian (Cisuralian)
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Permian (Cisuralian)
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Small, subovate to guttate in outline, ventral umbonal region elongated, fold and sulcus with several faint costae, otherwise similar to Brachythyris.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Brachythyridoidea
Family:
Brachythyrididae
Formal Genus Name and Reference:
Ella FREDERIKS, 1918a, p. 87
Type Species:
Martinia simensis CHERNYSHEV, 1902, p. 569, OD
Images
(Click to enlarge in a new window)
Fig. 1207, 5a-d. *E. simensis (ChernySHEV), Urals, syntype, ventral, dorsal, anterior, and lateral views, X2 (new).
Synonyms
Geographic Distribution
Russia
Age Range
Beginning Stage in Treatise Usage:
Permian (Cisuralian)
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Permian (Cisuralian)
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
Small, subovate to guttate in outline, ventral umbonal region elongated, fold and sulcus with several faint costae, otherwise similar to Brachythyris.