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Paucicrura
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Orthida
Superfamily:
Dalmanelloidea
Family:
Dalmanellidae
Formal Genus Name and Reference:
Paucicrura COOPER, 1956, p. 956
Type Species:
Orthis rogata SARDESON, 1892, p. 331, OD
Images
(Click to enlarge in a new window)
Fig. 566, 4a-e. * P. rogata (Sardeson), Caradoc, Minnesota, $a-d$, ventral, dorsal, anterior, posterior views of conjoined valves, $X_{2}$, $e$, dorsal interior, $X_{3}$ (Cooper, 1956)., ——FIG. 566, 4f. P. virginica Cooper, Caradoc, Virginia, ventral interior, $\\times_{3}$ (Cooper, 1956).
Synonyms
Cristiferina, Sigopallus
Geographic Distribution
Britain, North America
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 (Ashgill)
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
0
Ending Date:
443.07
Description
"Subquadrate, ventribiconvex, fascicostellate valves, ventral interior with divergent dental plates and bilobed muscle scar, dorsal interior with differentially trilobed cardinal process with median lobe expanded as crest."
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Orthida
Superfamily:
Dalmanelloidea
Family:
Dalmanellidae
Formal Genus Name and Reference:
Paucicrura COOPER, 1956, p. 956
Type Species:
Orthis rogata SARDESON, 1892, p. 331, OD
Images
(Click to enlarge in a new window)
Fig. 566, 4a-e. * P. rogata (Sardeson), Caradoc, Minnesota, $a-d$, ventral, dorsal, anterior, posterior views of conjoined valves, $X_{2}$, $e$, dorsal interior, $X_{3}$ (Cooper, 1956)., ——FIG. 566, 4f. P. virginica Cooper, Caradoc, Virginia, ventral interior, $\\times_{3}$ (Cooper, 1956).
Synonyms
Cristiferina, Sigopallus
Geographic Distribution
Britain, North America
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 (Ashgill)
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
0
Ending Date:
443.07
Description
"Subquadrate, ventribiconvex, fascicostellate valves, ventral interior with divergent dental plates and bilobed muscle scar, dorsal interior with differentially trilobed cardinal process with median lobe expanded as crest."