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Orthothetina
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Strophomenata
Order:
Orthotetida
Suborder:
Orthotetidina
Superfamily:
Orthotetoidea
Family:
Meekellidae
Subfamily:
Meekellinae
Formal Genus Name and Reference:
Orthothetina SCHELLWIEN, 1900, p. 8
Type Species:
Orthothetes persicus, SD Schuchert in Schuchert & LEVENE, 1929, p. 91
Images
(Click to enlarge in a new window)
Fig. 478, 1 a-c .*O. persicus (Schellwien), a, b, exterior, posterior views of ventral valve, Kazanian, Persia, Iran, X1 (Schellwien, 1900), c, dorsal valve exterior, Dzulfian, Transcaucasia, x1 (Sarytcheva & Sokolskaya, 1965).-Fig. 478, 1d. O. iljinae (Sokolskaya), Guadalupian, Transcaucasia, holotype, posterior view of dorsal valve, X1 (Sarytcheva & Sokolskaya, 1965).
Synonyms
Lopingia
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Carboniferous
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Permian
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Similar to Meekella including strong monticulus in flat pseudodeltidium, dental plates converging separately onto floor of ventral valve, and fine costellation mainly by branching but without radial pli- cae of secondary costation
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Strophomenata
Order:
Orthotetida
Suborder:
Orthotetidina
Superfamily:
Orthotetoidea
Family:
Meekellidae
Subfamily:
Meekellinae
Formal Genus Name and Reference:
Orthothetina SCHELLWIEN, 1900, p. 8
Type Species:
Orthothetes persicus, SD Schuchert in Schuchert & LEVENE, 1929, p. 91
Images
(Click to enlarge in a new window)
Fig. 478, 1 a-c .*O. persicus (Schellwien), a, b, exterior, posterior views of ventral valve, Kazanian, Persia, Iran, X1 (Schellwien, 1900), c, dorsal valve exterior, Dzulfian, Transcaucasia, x1 (Sarytcheva & Sokolskaya, 1965).-Fig. 478, 1d. O. iljinae (Sokolskaya), Guadalupian, Transcaucasia, holotype, posterior view of dorsal valve, X1 (Sarytcheva & Sokolskaya, 1965).
Synonyms
Lopingia
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Carboniferous
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Permian
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
Similar to Meekella including strong monticulus in flat pseudodeltidium, dental plates converging separately onto floor of ventral valve, and fine costellation mainly by branching but without radial pli- cae of secondary costation