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Avonia
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Productoidea
Family:
Productellidae
Formal Genus Name and Reference:
Avonia THOMAS, 1914, p. 259
Type Species:
Productus youngianus DAVIDSON, 1860, p. 180, OD
Images
(Click to enlarge in a new window)
Fig. 284, 3ad. *A. youngiana (Davidson), Brigantian, Stirlingshire, $a-d$, lectotype, viewed ventrally, dorsally, posteriorly, laterally, BMNH B 45680, X1.5 (new).
Synonyms
Geographic Distribution
Europe, Asia
Age Range
Beginning Stage in Treatise Usage:
Lower Carboniferous (Viséan)
Beginning International Stage:
Visean
Fraction Up In Beginning Stage:
0
Beginning Date:
346.73
Ending Stage in Treatise Usage:
Lower Carboniferous (lower Serpukhovian)
Ending International Stage:
Serpukhovian
Fraction Up In Ending Stage:
50
Ending Date:
326.87
Description
Outline somewhat elongate, concentric ornament of weak irregular lamellae, ribbing weak, only anteriorly, lateral ridges to inner side of ears
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Productoidea
Family:
Productellidae
Formal Genus Name and Reference:
Avonia THOMAS, 1914, p. 259
Type Species:
Productus youngianus DAVIDSON, 1860, p. 180, OD
Images
(Click to enlarge in a new window)
Fig. 284, 3ad. *A. youngiana (Davidson), Brigantian, Stirlingshire, $a-d$, lectotype, viewed ventrally, dorsally, posteriorly, laterally, BMNH B 45680, X1.5 (new).
Synonyms
Geographic Distribution
Europe, Asia
Age Range
Beginning Stage in Treatise Usage:
Lower Carboniferous (Viséan)
Beginning International Stage:
Visean
Fraction Up In Beginning Stage:
0
Beginning Date:
346.73
Ending Stage in Treatise Usage:
Lower Carboniferous (lower Serpukhovian)
Ending International Stage:
Serpukhovian
Fraction Up In Ending Stage:
50
Ending Date:
326.87
Description
Outline somewhat elongate, concentric ornament of weak irregular lamellae, ribbing weak, only anteriorly, lateral ridges to inner side of ears