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Tadschikia
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Rhynchonellida
Superfamily:
Uncinuloidea
Family:
Hebetoechiidae
Formal Genus Name and Reference:
Tadschikia NIKIFOROVA, 1937a, p. 35
Type Species:
Wilsonella (T.) wilsoniaformis, OD
Images
(Click to enlarge in a new window)
Fig. 749, 3a-g. *T. wilsoniaformis (Nikiforova), Turkestan, $a-d$, dorsal, ventral, lateral, and anterior views, x1, e$, serial section at articulation area, x2$ (Nikiforova, 1937a), $f-g$, sections through septalium, x2$ (Havlíček, 1961).
Synonyms
Geographic Distribution
Turkestan, China
Age Range
Beginning Stage in Treatise Usage:
Middle Silurian (Wenlock)
Beginning International Stage:
Sheinwoodian
Fraction Up In Beginning Stage:
0
Beginning Date:
432.93
Ending Stage in Treatise Usage:
Middle Silurian (Wenlock)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
100
Ending Date:
426.74
Description
"Medium to large size, subcircular outline, globular profile. Beak suberect to erect, foramen small, circular. Fold and sulcus weak, tongue high. Costae medium, simple, flattened and grooved on paries geniculatus. Dental plates long, convergent ventrally. Dorsal median septum long, septalium with low, calluslike cardinal process posteriorly and with cover plate anteriorly."
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Rhynchonellida
Superfamily:
Uncinuloidea
Family:
Hebetoechiidae
Formal Genus Name and Reference:
Tadschikia NIKIFOROVA, 1937a, p. 35
Type Species:
Wilsonella (T.) wilsoniaformis, OD
Images
(Click to enlarge in a new window)
Fig. 749, 3a-g. *T. wilsoniaformis (Nikiforova), Turkestan, $a-d$, dorsal, ventral, lateral, and anterior views, x1, e$, serial section at articulation area, x2$ (Nikiforova, 1937a), $f-g$, sections through septalium, x2$ (Havlíček, 1961).
Synonyms
Geographic Distribution
Turkestan, China
Age Range
Beginning Stage in Treatise Usage:
Middle Silurian (Wenlock)
Beginning International Stage:
Sheinwoodian
Fraction Up In Beginning Stage:
0
Beginning Date:
432.93
Ending Stage in Treatise Usage:
Middle Silurian (Wenlock)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
100
Ending Date:
426.74
Description
"Medium to large size, subcircular outline, globular profile. Beak suberect to erect, foramen small, circular. Fold and sulcus weak, tongue high. Costae medium, simple, flattened and grooved on paries geniculatus. Dental plates long, convergent ventrally. Dorsal median septum long, septalium with low, calluslike cardinal process posteriorly and with cover plate anteriorly."