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Dolerorthis
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Orthida
Superfamily:
Orthoidea
Family:
Hesperorthidae
Formal Genus Name and Reference:
Dolerorthis Schuchert & COOPER, 1931, p. 244
Type Species:
Orthis interplicata, OD
Images
(Click to enlarge in a new window)
Fig. 535, 1a. *D. interplicata (Schuchert & Cooper), Wenlock, Indiana, dorsal interior, x1.5$ (Schuchert & Cooper, 1932)., Fig. 535, 1b, c. D. flabellites (Foerste), Wenlock, Indiana, $b$, ventral interior, x1.5$, c, dorsal interior, x1.5$ (Schuchert & Cooper, 1932)., Fig. 535, 1d-g. D. rustica (J. de C. Sowerby), $d-f$, ventral, dorsal, lateral views of conjoined valves, Wenlock, Sweden, X 1.5, g, dorsal interior, Wenlock, England, X1.5 (Schuchert & Cooper, 1932)., Fig. 535, 1 h-k. D. rigida (Davidson), Wenlock, Shropshire, $h$, dorsal interior, x1.5, i-k$, dorsal, ventral, lateral views of conjoined valves, x1$ (Bassett, 1970).
Synonyms
Altaeorthis, Munhella
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Arenig)
Beginning International Stage:
Floian
Fraction Up In Beginning Stage:
0
Beginning Date:
477.08
Ending Stage in Treatise Usage:
Lower Devonian (Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Transversely semioval, cardinal extremities variable, biconvex to convexoconcave, uniplicate, coarsely costellate without capillae, delthyrium and notothyrium wide, interareas relatively long, curved, ventral muscle scar with median ridge, pedicle callist not developed, posterior pair of dorsal adductor scars lying posterolaterally of anterior pair and separated by strong, divergent vascula myaria, dorsal mantle canal system apocapate. Upper Ordovician (Arenig)-Lower Devonian (Emsian): cosmopolitan.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Orthida
Superfamily:
Orthoidea
Family:
Hesperorthidae
Formal Genus Name and Reference:
Dolerorthis Schuchert & COOPER, 1931, p. 244
Type Species:
Orthis interplicata, OD
Images
(Click to enlarge in a new window)
Fig. 535, 1a. *D. interplicata (Schuchert & Cooper), Wenlock, Indiana, dorsal interior, x1.5$ (Schuchert & Cooper, 1932)., Fig. 535, 1b, c. D. flabellites (Foerste), Wenlock, Indiana, $b$, ventral interior, x1.5$, c, dorsal interior, x1.5$ (Schuchert & Cooper, 1932)., Fig. 535, 1d-g. D. rustica (J. de C. Sowerby), $d-f$, ventral, dorsal, lateral views of conjoined valves, Wenlock, Sweden, X 1.5, g, dorsal interior, Wenlock, England, X1.5 (Schuchert & Cooper, 1932)., Fig. 535, 1 h-k. D. rigida (Davidson), Wenlock, Shropshire, $h$, dorsal interior, x1.5, i-k$, dorsal, ventral, lateral views of conjoined valves, x1$ (Bassett, 1970).
Synonyms
Altaeorthis, Munhella
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Arenig)
Beginning International Stage:
Floian
Fraction Up In Beginning Stage:
0
Beginning Date:
477.08
Ending Stage in Treatise Usage:
Lower Devonian (Emsian)
Ending International Stage:
Emsian
Fraction Up In Ending Stage:
100
Ending Date:
394.3
Description
Transversely semioval, cardinal extremities variable, biconvex to convexoconcave, uniplicate, coarsely costellate without capillae, delthyrium and notothyrium wide, interareas relatively long, curved, ventral muscle scar with median ridge, pedicle callist not developed, posterior pair of dorsal adductor scars lying posterolaterally of anterior pair and separated by strong, divergent vascula myaria, dorsal mantle canal system apocapate. Upper Ordovician (Arenig)-Lower Devonian (Emsian): cosmopolitan.