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Undispirifer
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Reticularioidea
Family:
Reticulariidae
Formal Genus Name and Reference:
Undispirifer HAVLÍCEK , 1957b, p. 439. [The genus Undispirifer is here accepted with a broad definition, awaiting revision of the undispiriferoid stock(s), especially interiors, in Germany and immediate environs. ?Gerolsteinites STRUVE , 1990, was diagnosed as having stronger ribs and a narrower ventral interarea than Undispirifer. After revision it might be revived as a subgenus of Undispirifer, or it could be a synonym of the genus Corylispirifer GOURVENNEC, 1989, to which it is also similar.]
Type Species:
Spirifer undiferus ROEMER, 1844, p. 73; OD
Images
(Click to enlarge in a new window)
Fig. 1230a–f. *U. undiferus (R OEMER ); dorsal, ventral, anterior, lateral views, lower Givetian, Moravia, Czech Republic, ×1.8 (new); e, posterior view of internal mold, Givetian, Eifel, Germany, ×1.5; f, ornament, Givetian, Eifel, Germany, ×5 (Johnson, 1974).
Synonyms
Nakazatothyris, ?Gerolsteinites
Geographic Distribution
Cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (upper Pragian)
Beginning International Stage:
Pragian
Fraction Up In Beginning Stage:
50
Beginning Date:
411.46
Ending Stage in Treatise Usage:
Upper Devonian (Frasnian)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Medium to large size, transverse, with catacline to apsacline interarea and rounded cardinal extremities; narrow, well-developed fold and sulcus; flanks with 5 to 8 low plications; microornament of concentric growth lamellae and marginal spines; dental plates long; crural plates short or lacking; ctenophoridium present.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Reticularioidea
Family:
Reticulariidae
Formal Genus Name and Reference:
Undispirifer HAVLÍCEK , 1957b, p. 439. [The genus Undispirifer is here accepted with a broad definition, awaiting revision of the undispiriferoid stock(s), especially interiors, in Germany and immediate environs. ?Gerolsteinites STRUVE , 1990, was diagnosed as having stronger ribs and a narrower ventral interarea than Undispirifer. After revision it might be revived as a subgenus of Undispirifer, or it could be a synonym of the genus Corylispirifer GOURVENNEC, 1989, to which it is also similar.]
Type Species:
Spirifer undiferus ROEMER, 1844, p. 73; OD
Images
(Click to enlarge in a new window)
Fig. 1230a–f. *U. undiferus (R OEMER ); dorsal, ventral, anterior, lateral views, lower Givetian, Moravia, Czech Republic, ×1.8 (new); e, posterior view of internal mold, Givetian, Eifel, Germany, ×1.5; f, ornament, Givetian, Eifel, Germany, ×5 (Johnson, 1974).
Synonyms
Nakazatothyris, ?Gerolsteinites
Geographic Distribution
Cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Lower Devonian (upper Pragian)
Beginning International Stage:
Pragian
Fraction Up In Beginning Stage:
50
Beginning Date:
411.46
Ending Stage in Treatise Usage:
Upper Devonian (Frasnian)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Medium to large size, transverse, with catacline to apsacline interarea and rounded cardinal extremities; narrow, well-developed fold and sulcus; flanks with 5 to 8 low plications; microornament of concentric growth lamellae and marginal spines; dental plates long; crural plates short or lacking; ctenophoridium present.