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Rigauxia
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Alolfioidea
Family:
Echinospiriferidae
Formal Genus Name and Reference:
Rigauxia BRICE, 1988, p. 371
Type Species:
Spirifer acutosinu RIGAUX, 1908, p. 15, OD
Images
(Click to enlarge in a new window)
Fig. 1120, 4a-e. * R. acutosinu (Rigaux), lower Frasnian, France, a-d, ventral, dorsal, anterior, and side views, X2, e, exterior showing fine ornament, X10 (Brice, 1988).
Synonyms
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Upper Devonian (Frasnian)
Beginning International Stage:
Frasnian
Fraction Up In Beginning Stage:
0
Beginning Date:
378.9
Ending Stage in Treatise Usage:
Upper Devonian (Frasnian)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Small to medium size, ventribiconvex, transverse, with obtuse or acute cardinal angles, commonly rounded, ventral interarea curved, apsacline, fold and sulcus with small plications, flanks with simple, rounded plications, surface with subradial capillae, becoming tuberculate, delthyrial cavity with apical callus, dental plates strong, extrasinal, weakly divergent, short crural plates may be obscured by callus and elevated ctenophoridium. Upper Devonian (Frasnian): cosmopolitan.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Spiriferida
Superfamily:
Alolfioidea
Family:
Echinospiriferidae
Formal Genus Name and Reference:
Rigauxia BRICE, 1988, p. 371
Type Species:
Spirifer acutosinu RIGAUX, 1908, p. 15, OD
Images
(Click to enlarge in a new window)
Fig. 1120, 4a-e. * R. acutosinu (Rigaux), lower Frasnian, France, a-d, ventral, dorsal, anterior, and side views, X2, e, exterior showing fine ornament, X10 (Brice, 1988).
Synonyms
Geographic Distribution
cosmopolitan
Age Range
Beginning Stage in Treatise Usage:
Upper Devonian (Frasnian)
Beginning International Stage:
Frasnian
Fraction Up In Beginning Stage:
0
Beginning Date:
378.9
Ending Stage in Treatise Usage:
Upper Devonian (Frasnian)
Ending International Stage:
Frasnian
Fraction Up In Ending Stage:
100
Ending Date:
371.1
Description
Small to medium size, ventribiconvex, transverse, with obtuse or acute cardinal angles, commonly rounded, ventral interarea curved, apsacline, fold and sulcus with small plications, flanks with simple, rounded plications, surface with subradial capillae, becoming tuberculate, delthyrial cavity with apical callus, dental plates strong, extrasinal, weakly divergent, short crural plates may be obscured by callus and elevated ctenophoridium. Upper Devonian (Frasnian): cosmopolitan.