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Eospirifer
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Cyrtioidea
Family:
Cyrtiidae
Formal Genus Name and Reference:
Eospirifer SCHUCHERT, 1913, p. 411
Type Species:
Spirifer radiatus J. de C. Sowerby, 1835, p. 245, OD, =Spirifer lineatus J. de C. Sowerby, 1825 in 1823-1825, p. 151, non Conchyliolites anomites lineatus Martin, 1809, = Terebratula? lineata SOWERBY, 1822 in 1821-1822, p. 39
Images
(Click to enlarge in a new window)
Fig. 1106, 1a-f. * E. radiatus (Sowerby), Wenlock, Gotland, a-c, anterior, lateral, and posterior views, d-e, dorsal and ventral views, f, posterior view of internal mold, X1 (Boucot, 1963a).
Synonyms
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
upper Upper Ordovician
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
66.7
Beginning Date:
447.72
Ending Stage in Treatise Usage:
Lower Devonian (upper Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Smooth or with broad low plications that originate on flanks, extrasinal dental plates, cardinal process lacking, crural plates absent in some early species
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Cyrtioidea
Family:
Cyrtiidae
Formal Genus Name and Reference:
Eospirifer SCHUCHERT, 1913, p. 411
Type Species:
Spirifer radiatus J. de C. Sowerby, 1835, p. 245, OD, =Spirifer lineatus J. de C. Sowerby, 1825 in 1823-1825, p. 151, non Conchyliolites anomites lineatus Martin, 1809, = Terebratula? lineata SOWERBY, 1822 in 1821-1822, p. 39
Images
(Click to enlarge in a new window)
Fig. 1106, 1a-f. * E. radiatus (Sowerby), Wenlock, Gotland, a-c, anterior, lateral, and posterior views, d-e, dorsal and ventral views, f, posterior view of internal mold, X1 (Boucot, 1963a).
Synonyms
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
upper Upper Ordovician
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
66.7
Beginning Date:
447.72
Ending Stage in Treatise Usage:
Lower Devonian (upper Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Smooth or with broad low plications that originate on flanks, extrasinal dental plates, cardinal process lacking, crural plates absent in some early species