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Megachonetes
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Chonetoidea
Family:
Rugosochonetidae
Formal Genus Name and Reference:
Megachonetes Sokolskaya, 1950, p. 42
Type Species:
Chonetes siblyi Thomas, 1919, p. 612 (also Paeckelmann, 1930, p. 274), OD, nom. nov. pro Chonetes compressa Sibly, 1908, p. 78, non WAAGEN, 1884, p. 630
Images
(Click to enlarge in a new window)
Fig. 269, 3a-e. * M. siblyi (Тnomas), Lower Carboniferous, Viséan, England, $a-c$, articulated shell, ventral, dorsal, lateral views, X1.25, d, ventral valve posterior part with interarea, pseudodeltidium, $e$, ventral valve interior with accessory adductor scars, x2$ (Muir-Wood, 1962).
Synonyms
Geographic Distribution
Belgium, France, Germany, Great Britain, Ireland, Russia, northern Africa, Asia, Australia
Age Range
Beginning Stage in Treatise Usage:
Lower Carboniferous (Tournaisian)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Lower Carboniferous (upper Viséan)
Ending International Stage:
Visean
Fraction Up In Ending Stage:
100
Ending Date:
330.34
Description
Medium to large, almost plano- to moderately concavoconvex, ventral valve slightly thickened, surface finely capillate, irregularly curved spines, extending at 45 to 60°
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Chonetoidea
Family:
Rugosochonetidae
Formal Genus Name and Reference:
Megachonetes Sokolskaya, 1950, p. 42
Type Species:
Chonetes siblyi Thomas, 1919, p. 612 (also Paeckelmann, 1930, p. 274), OD, nom. nov. pro Chonetes compressa Sibly, 1908, p. 78, non WAAGEN, 1884, p. 630
Images
(Click to enlarge in a new window)
Fig. 269, 3a-e. * M. siblyi (Тnomas), Lower Carboniferous, Viséan, England, $a-c$, articulated shell, ventral, dorsal, lateral views, X1.25, d, ventral valve posterior part with interarea, pseudodeltidium, $e$, ventral valve interior with accessory adductor scars, x2$ (Muir-Wood, 1962).
Synonyms
Geographic Distribution
Belgium, France, Germany, Great Britain, Ireland, Russia, northern Africa, Asia, Australia
Age Range
Beginning Stage in Treatise Usage:
Lower Carboniferous (Tournaisian)
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Lower Carboniferous (upper Viséan)
Ending International Stage:
Visean
Fraction Up In Ending Stage:
100
Ending Date:
330.34
Description
Medium to large, almost plano- to moderately concavoconvex, ventral valve slightly thickened, surface finely capillate, irregularly curved spines, extending at 45 to 60°