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Carinatina
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Atrypida
Superfamily:
Davidsonioidea
Family:
Carinatinidae
Formal Genus Name and Reference:
Carinatina NALIVKIN, 1930a, p. 104
Type Species:
Orthis arimaspus Eichwald in von Buch, 1840, p. 108, OD, vid. D'EICHWALD, 1861, p. 216
Images
(Click to enlarge in a new window)
Fig. 980, 1a-g. *C. arimaspa (Eichwald), middle Eifelian, Urals, $a-e$, ventral, ventral (smaller shell), dorsal, lateral, anterior views, x2$ (Copper, 1978), $f-g$, serial sections, x2$ (Rzhonsnitskaia, 1975).
Synonyms
Zejszneria, ?Salairina, Kaplicona, ?Klukatryp
Geographic Distribution
Eurasia, North America, Pragian-lower Givetian
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (Pragian)
Beginning International Stage:
Pragian
Fraction Up In Beginning Stage:
0
Beginning Date:
412.4
Ending Stage in Treatise Usage:
Middle Devonian (lower Givetian)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
35
Ending Date:
383.06
Description
Medium to large, flat, biconvex, strongly carinate, strophic hinge, wide apsacline-orthocline area, apical foramen, deltidial plates, coarsely ribbed, with 2 to 4 raised ventral midribs forming carina, broad, flat fold to rectimarginate commissure, broad, ventral rim surrounded by wide trail (5 to 15 mm) with ribs replaced by fine costellae, pedicle collar fused into deltidial plates, teeth with prominent dental cavities, thick hinge plate with bushy cardinal process, crura laterally divergent, spiralia dorsal, only rarely, weakly impressed as grooves into ventral valve, fewer than 10 whorls, jugal processes undescribed. Differs from Biconostrophia in having dental cavities, spiralia normally not impressed into ventral valve, differs from Eifelatrypa in possessing ventral carination, teeth with dental cavities. Possibly occurs in the Frasnian in Timan.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Atrypida
Superfamily:
Davidsonioidea
Family:
Carinatinidae
Formal Genus Name and Reference:
Carinatina NALIVKIN, 1930a, p. 104
Type Species:
Orthis arimaspus Eichwald in von Buch, 1840, p. 108, OD, vid. D'EICHWALD, 1861, p. 216
Images
(Click to enlarge in a new window)
Fig. 980, 1a-g. *C. arimaspa (Eichwald), middle Eifelian, Urals, $a-e$, ventral, ventral (smaller shell), dorsal, lateral, anterior views, x2$ (Copper, 1978), $f-g$, serial sections, x2$ (Rzhonsnitskaia, 1975).
Synonyms
Zejszneria, ?Salairina, Kaplicona, ?Klukatryp
Geographic Distribution
Eurasia, North America, Pragian-lower Givetian
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (Pragian)
Beginning International Stage:
Pragian
Fraction Up In Beginning Stage:
0
Beginning Date:
412.4
Ending Stage in Treatise Usage:
Middle Devonian (lower Givetian)
Ending International Stage:
Givetian
Fraction Up In Ending Stage:
35
Ending Date:
383.06
Description
Medium to large, flat, biconvex, strongly carinate, strophic hinge, wide apsacline-orthocline area, apical foramen, deltidial plates, coarsely ribbed, with 2 to 4 raised ventral midribs forming carina, broad, flat fold to rectimarginate commissure, broad, ventral rim surrounded by wide trail (5 to 15 mm) with ribs replaced by fine costellae, pedicle collar fused into deltidial plates, teeth with prominent dental cavities, thick hinge plate with bushy cardinal process, crura laterally divergent, spiralia dorsal, only rarely, weakly impressed as grooves into ventral valve, fewer than 10 whorls, jugal processes undescribed. Differs from Biconostrophia in having dental cavities, spiralia normally not impressed into ventral valve, differs from Eifelatrypa in possessing ventral carination, teeth with dental cavities. Possibly occurs in the Frasnian in Timan.