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Taphrorthis
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Orthida
Superfamily:
Orthoidea
Family:
Orthidae
Formal Genus Name and Reference:
Taphrorthis COOPER, 1956, p. 326
Type Species:
T. emarginata, OD
Images
(Click to enlarge in a new window)
Fig. 526, 2a-h. *T. emarginata, Caradoc, $a, b$, dorsal interior, ventral interior, Tennessee, x2$, $c-g$, posterior, anterior, lateral, ventral, dorsal views of conjoined valves, Alabama, x1}$, $h$, enlarged dorsal view of conjoined valves, x2$ (Cooper, 1956).
Synonyms
Geographic Distribution
North America, Scotland, Ireland, Estonia, China
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Caradoc)
Beginning International Stage:
Sandbian
Fraction Up In Beginning Stage:
0
Beginning Date:
458.18
Ending Stage in Treatise Usage:
Upper Ordovician (Caradoc)
Ending International Stage:
Katian
Fraction Up In Ending Stage:
66.7
Ending Date:
447.72
Description
Ramicostellate with strong fila, ventral muscle scar subcordate with low median ridge, brachiophores short, rodlike, widely divergent, quadripartite adductor muscle scars with larger anterior pair, ventral vascula media apparently subparallel proximally
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Orthida
Superfamily:
Orthoidea
Family:
Orthidae
Formal Genus Name and Reference:
Taphrorthis COOPER, 1956, p. 326
Type Species:
T. emarginata, OD
Images
(Click to enlarge in a new window)
Fig. 526, 2a-h. *T. emarginata, Caradoc, $a, b$, dorsal interior, ventral interior, Tennessee, x2$, $c-g$, posterior, anterior, lateral, ventral, dorsal views of conjoined valves, Alabama, x1}$, $h$, enlarged dorsal view of conjoined valves, x2$ (Cooper, 1956).
Synonyms
Geographic Distribution
North America, Scotland, Ireland, Estonia, China
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Caradoc)
Beginning International Stage:
Sandbian
Fraction Up In Beginning Stage:
0
Beginning Date:
458.18
Ending Stage in Treatise Usage:
Upper Ordovician (Caradoc)
Ending International Stage:
Katian
Fraction Up In Ending Stage:
66.7
Ending Date:
447.72
Description
Ramicostellate with strong fila, ventral muscle scar subcordate with low median ridge, brachiophores short, rodlike, widely divergent, quadripartite adductor muscle scars with larger anterior pair, ventral vascula media apparently subparallel proximally