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Austinella
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Rhynchonellata
Order:
Orthida
Suborder:
Orthidina
Superfamily:
Orthoidea
Family:
Plaesiomyidae
Subfamily:
Plaesiomyinae
Formal Genus Name and Reference:
Austinella FOERSTE, 1909b, p. 224
Type Species:
Orthis kankakensis McChesney, 1861, p. 77, SD BASSLER, 1915, p. 1002
Images
(Click to enlarge in a new window)
Fig. 540, 3a-d. A. whitfieldi (Winchell), Ashgill, Minnesota, a, internal mold of ventral valve, x1.5, b, dorsal interior, x1.5, c, d, ventral, dorsal exteriors, x1.5 (Schuchert & Cooper, 1932).
Synonyms
Geographic Distribution
North America, Europe, Siberia, Kazakhstan, northeastern and northwestern China
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Ashgill)
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
66.7
Beginning Date:
447.72
Ending Stage in Treatise Usage:
Upper Ordovician (Ashgill)
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
100
Ending Date:
443.07
Description
Subequally biconvex, unisulcate, ramicostellate with sporadic aditicules, strongly filate, ventral interarea long, curved, anacline, dorsal interarea short, plane, ventral muscle scar with thickened margin, dorsal adductor scar subequally quadripartite.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Rhynchonellata
Order:
Orthida
Suborder:
Orthidina
Superfamily:
Orthoidea
Family:
Plaesiomyidae
Subfamily:
Plaesiomyinae
Formal Genus Name and Reference:
Austinella FOERSTE, 1909b, p. 224
Type Species:
Orthis kankakensis McChesney, 1861, p. 77, SD BASSLER, 1915, p. 1002
Images
(Click to enlarge in a new window)
Fig. 540, 3a-d. A. whitfieldi (Winchell), Ashgill, Minnesota, a, internal mold of ventral valve, x1.5, b, dorsal interior, x1.5, c, d, ventral, dorsal exteriors, x1.5 (Schuchert & Cooper, 1932).
Synonyms
Geographic Distribution
North America, Europe, Siberia, Kazakhstan, northeastern and northwestern China
Age Range
Beginning Stage in Treatise Usage:
Upper Ordovician (Ashgill)
Beginning International Stage:
Katian
Fraction Up In Beginning Stage:
66.7
Beginning Date:
447.72
Ending Stage in Treatise Usage:
Upper Ordovician (Ashgill)
Ending International Stage:
Hirnantian
Fraction Up In Ending Stage:
100
Ending Date:
443.07
Description
Subequally biconvex, unisulcate, ramicostellate with sporadic aditicules, strongly filate, ventral interarea long, curved, anacline, dorsal interarea short, plane, ventral muscle scar with thickened margin, dorsal adductor scar subequally quadripartite.