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Cancrinella
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Linoproductoidea
Family:
Linoproductidae
Formal Genus Name and Reference:
Cancrinella FREDERICKS, 1928, p. 784
Type Species:
Productus cancrini de VERNEUIL, 1845, p. 245, OD
Images
(Click to enlarge in a new window)
Fig. 370, 2a-d. *C. cancrini (de Verneuil), Lower Permian, Arctic Russia, $a-c$, shell viewed ventrally, dorsally, laterally, x1, d$, part of dorsal valve interior, $X_{4}$ (Sarytcheva, 1977).-Fig. 370, 2e, f. C. subquadrata Cooper & Grant, Upper Permian, Word Formation, Texas, $e$, dorsal valve exterior, $\\mathrm{X}_{2}$, $f$, dorsal valve interior, x1}^{ (\\text {Cooper } &}$ Grant, 1975).-Fig. 370, 2g, h. C. altissima (R. H. King), Gzhelian, Wayland Shale, Texas, shell viewed ventrally, dorsally, X1 (Muir-Wood & Cooper, 1960).
Synonyms
Platycancrinella
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Upper Carboniferous (Gzhelian)
Beginning International Stage:
Gzhelian
Fraction Up In Beginning Stage:
0
Beginning Date:
303.68
Ending Stage in Treatise Usage:
Upper Permian (Wordian)
Ending International Stage:
Wordian
Fraction Up In Ending Stage:
100
Ending Date:
264.34
Description
Small to medium size, corpus almost planoconvex, deep cavity, spines with elongate swollen bases on ribs, evenly distributed, clusters on ears, spines fine on dorsal valves, rugae weak on both valves, cardinal process sessile, lateral ridges close to hinge, median septum commonly divided posteriorly.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Linoproductoidea
Family:
Linoproductidae
Formal Genus Name and Reference:
Cancrinella FREDERICKS, 1928, p. 784
Type Species:
Productus cancrini de VERNEUIL, 1845, p. 245, OD
Images
(Click to enlarge in a new window)
Fig. 370, 2a-d. *C. cancrini (de Verneuil), Lower Permian, Arctic Russia, $a-c$, shell viewed ventrally, dorsally, laterally, x1, d$, part of dorsal valve interior, $X_{4}$ (Sarytcheva, 1977).-Fig. 370, 2e, f. C. subquadrata Cooper & Grant, Upper Permian, Word Formation, Texas, $e$, dorsal valve exterior, $\\mathrm{X}_{2}$, $f$, dorsal valve interior, x1}^{ (\\text {Cooper } &}$ Grant, 1975).-Fig. 370, 2g, h. C. altissima (R. H. King), Gzhelian, Wayland Shale, Texas, shell viewed ventrally, dorsally, X1 (Muir-Wood & Cooper, 1960).
Synonyms
Platycancrinella
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Upper Carboniferous (Gzhelian)
Beginning International Stage:
Gzhelian
Fraction Up In Beginning Stage:
0
Beginning Date:
303.68
Ending Stage in Treatise Usage:
Upper Permian (Wordian)
Ending International Stage:
Wordian
Fraction Up In Ending Stage:
100
Ending Date:
264.34
Description
Small to medium size, corpus almost planoconvex, deep cavity, spines with elongate swollen bases on ribs, evenly distributed, clusters on ears, spines fine on dorsal valves, rugae weak on both valves, cardinal process sessile, lateral ridges close to hinge, median septum commonly divided posteriorly.