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Liosotella
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Productoidea
Family:
Productellidae
Formal Genus Name and Reference:
Liosotella COOPER, 1953, p. 36
Type Species:
L. rugosa, OD
Images
(Click to enlarge in a new window)
Fig. 294, 2a-d. * L. rugosa, Upper Permian, Monos Formation, Sonora, Mexico, holotype viewed posteriorly, anteriorly, dorsally, laterally, USNM 115458, X1 (Muir-Wood & Cooper, 1960).-Fig. 294, 2e-f. L. irregularis Cooper & Grant, Upper Permian, Word Formation, Texas, dorsal valve exterior, interior, x1$ (Cooper & Grant, 1975).
Synonyms
Geographic Distribution
central North America, northern and northeastern China
Age Range
Beginning Stage in Treatise Usage:
upper Lower Permian (Roadian)
Beginning International Stage:
Roadian
Fraction Up In Beginning Stage:
0
Beginning Date:
274.37
Ending Stage in Treatise Usage:
lower Upper Permian (lower Kazanian)
Ending International Stage:
Roadian
Fraction Up In Ending Stage:
50
Ending Date:
271.79
Description
Small to medium size with broad, shallow median sulcus, gently concavoconvex corpus, geniculate, long trails, steep flanks, ribbing strong only on trail, spines in curved rows at base of flanks, scattered variably on rest of valve, zygidium commonly present, dispositions of lateral ridges, extensions across ears variable, one or two rows of strong endospines anterior to well-marked brachial ridges, surfaces tuberculate.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Productoidea
Family:
Productellidae
Formal Genus Name and Reference:
Liosotella COOPER, 1953, p. 36
Type Species:
L. rugosa, OD
Images
(Click to enlarge in a new window)
Fig. 294, 2a-d. * L. rugosa, Upper Permian, Monos Formation, Sonora, Mexico, holotype viewed posteriorly, anteriorly, dorsally, laterally, USNM 115458, X1 (Muir-Wood & Cooper, 1960).-Fig. 294, 2e-f. L. irregularis Cooper & Grant, Upper Permian, Word Formation, Texas, dorsal valve exterior, interior, x1$ (Cooper & Grant, 1975).
Synonyms
Geographic Distribution
central North America, northern and northeastern China
Age Range
Beginning Stage in Treatise Usage:
upper Lower Permian (Roadian)
Beginning International Stage:
Roadian
Fraction Up In Beginning Stage:
0
Beginning Date:
274.37
Ending Stage in Treatise Usage:
lower Upper Permian (lower Kazanian)
Ending International Stage:
Roadian
Fraction Up In Ending Stage:
50
Ending Date:
271.79
Description
Small to medium size with broad, shallow median sulcus, gently concavoconvex corpus, geniculate, long trails, steep flanks, ribbing strong only on trail, spines in curved rows at base of flanks, scattered variably on rest of valve, zygidium commonly present, dispositions of lateral ridges, extensions across ears variable, one or two rows of strong endospines anterior to well-marked brachial ridges, surfaces tuberculate.