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Glyptorthis
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Orthida
Superfamily:
Orthoidea
Family:
Glyptorthidae
Formal Genus Name and Reference:
Glyptorthis FOERSTE, 1914, p. 257
Type Species:
Orthis insculpta HALL, 1847, p. 125, OD
Images
(Click to enlarge in a new window)
Fig. 530, 1a-e. *G. insculpta (Hall), Ashgill, Ohio, $a-c$, ventral, dorsal, lateral views of conjoined valves, x1.5, d$, ventral interior, x1.5, e$, dorsal interior, x1.5$ (Schuchert & Cooper, 1932)., Fig. 530, 1f, g. G. pulchra, Ashgill, Iowa, ventral interior, dorsal interior, x2$ (Cocks, new).
Synonyms
Geographic Distribution
Northern Hemisphere
Age Range
Beginning Stage in Treatise Usage:
Lower Ordovician (Llanvirn)
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
middle Silurian (Wenlock)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
100
Ending Date:
426.74
Description
Variable in size and in cardinal extremities, subequally biconvex, ramicostellate, strongly lamellose, ventral interarea of varying length, dorsal interarea short, curved, ventral muscle scars subcordate with adductors commonly raised on median callist extending forward as tongue of secondary shell, brachiophores divergent, rodlike
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Orthida
Superfamily:
Orthoidea
Family:
Glyptorthidae
Formal Genus Name and Reference:
Glyptorthis FOERSTE, 1914, p. 257
Type Species:
Orthis insculpta HALL, 1847, p. 125, OD
Images
(Click to enlarge in a new window)
Fig. 530, 1a-e. *G. insculpta (Hall), Ashgill, Ohio, $a-c$, ventral, dorsal, lateral views of conjoined valves, x1.5, d$, ventral interior, x1.5, e$, dorsal interior, x1.5$ (Schuchert & Cooper, 1932)., Fig. 530, 1f, g. G. pulchra, Ashgill, Iowa, ventral interior, dorsal interior, x2$ (Cocks, new).
Synonyms
Geographic Distribution
Northern Hemisphere
Age Range
Beginning Stage in Treatise Usage:
Lower Ordovician (Llanvirn)
Beginning International Stage:
Dapingian
Fraction Up In Beginning Stage:
0
Beginning Date:
471.26
Ending Stage in Treatise Usage:
middle Silurian (Wenlock)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
100
Ending Date:
426.74
Description
Variable in size and in cardinal extremities, subequally biconvex, ramicostellate, strongly lamellose, ventral interarea of varying length, dorsal interarea short, curved, ventral muscle scars subcordate with adductors commonly raised on median callist extending forward as tongue of secondary shell, brachiophores divergent, rodlike