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Oxoplecia
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Triplesiidina
Superfamily:
Triplesioidea
Family:
Triplesiidae
Formal Genus Name and Reference:
Oxoplecia WILSON, 1913, p. 81
Type Species:
O. calhouni, OD
Images
(Click to enlarge in a new window)
Fig. 497, 4a,b. *O. calhouni, Caradoc, Ontario; holotype, dorsal, anterior views, ×1.5 (Wright, 1965b).——Fig. 497, 4c. O. gouldi ULRICH & COOPER, Caradoc, Oklahoma; detail of ornament on dorsal valve, ×15 (new).
Synonyms
California
Geographic Distribution
widespread North America, Eurasia
Age Range
Beginning Stage in Treatise Usage:
Ordovician (upper Llanvirn)
Beginning International Stage:
Darriwilian
Fraction Up In Beginning Stage:
30
Beginning Date:
466.05
Ending Stage in Treatise Usage:
Silurian (?Wenlock)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
100
Ending Date:
426.74
Description
Roundedly elliptical to transverse shells, costellate with distinctive fine, elevated, concentric growth lines, uniplicate. Monticulus may be lost anteriorly, pedicle tube not developed, cardinal process keeled, cowl lacking.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Triplesiidina
Superfamily:
Triplesioidea
Family:
Triplesiidae
Formal Genus Name and Reference:
Oxoplecia WILSON, 1913, p. 81
Type Species:
O. calhouni, OD
Images
(Click to enlarge in a new window)
Fig. 497, 4a,b. *O. calhouni, Caradoc, Ontario; holotype, dorsal, anterior views, ×1.5 (Wright, 1965b).——Fig. 497, 4c. O. gouldi ULRICH & COOPER, Caradoc, Oklahoma; detail of ornament on dorsal valve, ×15 (new).
Synonyms
California
Geographic Distribution
widespread North America, Eurasia
Age Range
Beginning Stage in Treatise Usage:
Ordovician (upper Llanvirn)
Beginning International Stage:
Darriwilian
Fraction Up In Beginning Stage:
30
Beginning Date:
466.05
Ending Stage in Treatise Usage:
Silurian (?Wenlock)
Ending International Stage:
Homerian
Fraction Up In Ending Stage:
100
Ending Date:
426.74
Description
Roundedly elliptical to transverse shells, costellate with distinctive fine, elevated, concentric growth lines, uniplicate. Monticulus may be lost anteriorly, pedicle tube not developed, cardinal process keeled, cowl lacking.