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Cyrtella
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferinida
Superfamily:
Syringothyridoidea
Family:
Syringothyrididae
Formal Genus Name and Reference:
Cyrtella FREDERIKS, 1924, p. 312
Type Species:
Cyrtia kulikiana FREDERIKS, 1916, p. 43, OD
Images
(Click to enlarge in a new window)
Fig. 1266, 2 a-e. *C*. kulikiana (Frederiks), Russia, ventral, dorsal, anterior, posterior, and lateral views of large syntype, X1 (new).
Synonyms
Asyrinx, Kungaella
Geographic Distribution
Russia, Afghanistan
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
Strongly transverse, ventral interarea moderately high, flattened, perideltidial areas well developed, flanks with moderately numerous ribs, delthyrial plate absent but simulated by thick callus, dental adminicula short, widely divergent, dorsal fold with distinctive median furrow
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferinida
Superfamily:
Syringothyridoidea
Family:
Syringothyrididae
Formal Genus Name and Reference:
Cyrtella FREDERIKS, 1924, p. 312
Type Species:
Cyrtia kulikiana FREDERIKS, 1916, p. 43, OD
Images
(Click to enlarge in a new window)
Fig. 1266, 2 a-e. *C*. kulikiana (Frederiks), Russia, ventral, dorsal, anterior, posterior, and lateral views of large syntype, X1 (new).
Synonyms
Asyrinx, Kungaella
Geographic Distribution
Russia, Afghanistan
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
Strongly transverse, ventral interarea moderately high, flattened, perideltidial areas well developed, flanks with moderately numerous ribs, delthyrial plate absent but simulated by thick callus, dental adminicula short, widely divergent, dorsal fold with distinctive median furrow