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Qianomena
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Strophomenoidea
Family:
Glyptomenidae
Formal Genus Name and Reference:
Qianomena Rong & YANG, 1981, p. 173
Type Species:
Q. unicosta, OD
Images
(Click to enlarge in a new window)
Fig. 157, 3a-d. *Q. unicosta, lower Xiangshuyuan Formation, upper Rhuddanian-
Synonyms
Geographic Distribution
China
Age Range
Beginning Stage in Treatise Usage:
Silurian (Llandovery)
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Silurian (Llandovery)
Ending International Stage:
Telychian
Fraction Up In Ending Stage:
100
Ending Date:
432.93
Description
Profile moderately concavoconvex, radial ornament absent or very faint apart from single prominent central costa, no true dental plates but very prominent, straight ventral muscle-bounding ridges posterolaterally to ventral muscle field, open anteriorly, cardinal process lobes projected posteriorly, socket ridges short, dorsal muscle field poorly impressed
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Strophomenida
Superfamily:
Strophomenoidea
Family:
Glyptomenidae
Formal Genus Name and Reference:
Qianomena Rong & YANG, 1981, p. 173
Type Species:
Q. unicosta, OD
Images
(Click to enlarge in a new window)
Fig. 157, 3a-d. *Q. unicosta, lower Xiangshuyuan Formation, upper Rhuddanian-
Synonyms
Geographic Distribution
China
Age Range
Beginning Stage in Treatise Usage:
Silurian (Llandovery)
Beginning International Stage:
Rhuddanian
Fraction Up In Beginning Stage:
0
Beginning Date:
443.07
Ending Stage in Treatise Usage:
Silurian (Llandovery)
Ending International Stage:
Telychian
Fraction Up In Ending Stage:
100
Ending Date:
432.93
Description
Profile moderately concavoconvex, radial ornament absent or very faint apart from single prominent central costa, no true dental plates but very prominent, straight ventral muscle-bounding ridges posterolaterally to ventral muscle field, open anteriorly, cardinal process lobes projected posteriorly, socket ridges short, dorsal muscle field poorly impressed