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Edriosteges
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Aulostegoidea
Family:
Aulostegidae
Formal Genus Name and Reference:
Edriosteges Muir-Wood & COOPER, 1960, p. 103
Type Species:
E. multispinosus, OD
Images
(Click to enlarge in a new window)
Fig. 425, 2a-e. *E. multispinosus, upper Leonard Formation, Texas, $a, b$, holotype, viewed ventrally, laterally, USNM 123906a, $X_{1}$, c, ventral valve interior, $X_{1}$, $d$, shell viewed dorsally, $X_{1}, e$, dorsal valve interior, $X_{1}$ (Muir-Wood & Cooper, 1960).
Synonyms
Neoedriosteges
Geographic Distribution
USA, China, Tibet, Salt Range
Age Range
Beginning Stage in Treatise Usage:
Lower Permian
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Lower Permian
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
"Medium, circular to subquadrate outline with short but wide ventral interarea, corpus gently concavoconvex with trails commonly having gutter, concentric ornament variably lamellose, especially dorsally, fine radial capillae commonly preserved on trails, ventral spines as in Echinosteges, but anteriorly tend to be distributed concentrically, no dorsal spines, interiors resemble Echinosteges."
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Aulostegoidea
Family:
Aulostegidae
Formal Genus Name and Reference:
Edriosteges Muir-Wood & COOPER, 1960, p. 103
Type Species:
E. multispinosus, OD
Images
(Click to enlarge in a new window)
Fig. 425, 2a-e. *E. multispinosus, upper Leonard Formation, Texas, $a, b$, holotype, viewed ventrally, laterally, USNM 123906a, $X_{1}$, c, ventral valve interior, $X_{1}$, $d$, shell viewed dorsally, $X_{1}, e$, dorsal valve interior, $X_{1}$ (Muir-Wood & Cooper, 1960).
Synonyms
Neoedriosteges
Geographic Distribution
USA, China, Tibet, Salt Range
Age Range
Beginning Stage in Treatise Usage:
Lower Permian
Beginning International Stage:
Asselian
Fraction Up In Beginning Stage:
0
Beginning Date:
298.89
Ending Stage in Treatise Usage:
Lower Permian
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
100
Ending Date:
274.37
Description
"Medium, circular to subquadrate outline with short but wide ventral interarea, corpus gently concavoconvex with trails commonly having gutter, concentric ornament variably lamellose, especially dorsally, fine radial capillae commonly preserved on trails, ventral spines as in Echinosteges, but anteriorly tend to be distributed concentrically, no dorsal spines, interiors resemble Echinosteges."