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Costispinifera
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Productoidea
Family:
Productellidae
Formal Genus Name and Reference:
Costispinifera Muir-Wood & COOPER, 1960, p. 217
Type Species:
C. texana, OD, =Avonia walcottiana costata R. E. KING, 1931, p. 85
Images
(Click to enlarge in a new window)
Fig. 285, 1a-f. *C. texana, Kazanian, Word Limestone, Texas, a-d, holotype, viewed anteriorly, posteriorly, dorsally, laterally, USNM 124150a, X1, e, ventral valve partial interior, X2, f, dorsal valve interior, X2 (Muir-Wood & Cooper, 1960).
Synonyms
Avonia
Geographic Distribution
USA
Age Range
Beginning Stage in Treatise Usage:
upper Lower Permian (Roadian)
Beginning International Stage:
Roadian
Fraction Up In Beginning Stage:
0
Beginning Date:
274.37
Ending Stage in Treatise Usage:
lower Upper Permian (lower Kazanian)
Ending International Stage:
Roadian
Fraction Up In Ending Stage:
50
Ending Date:
271.79
Description
Small, transverse corpus with geniculate profile, deep cavity, elongate trails, rugae irregular on posterior disks, ribbing developed on trails, spines evenly distributed over ventral valve, thinner on dorsal valve, cardinal process with short shaft, lateral ridges extend across ears, long endospines border brachial areas anteriorly and laterally
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Productoidea
Family:
Productellidae
Formal Genus Name and Reference:
Costispinifera Muir-Wood & COOPER, 1960, p. 217
Type Species:
C. texana, OD, =Avonia walcottiana costata R. E. KING, 1931, p. 85
Images
(Click to enlarge in a new window)
Fig. 285, 1a-f. *C. texana, Kazanian, Word Limestone, Texas, a-d, holotype, viewed anteriorly, posteriorly, dorsally, laterally, USNM 124150a, X1, e, ventral valve partial interior, X2, f, dorsal valve interior, X2 (Muir-Wood & Cooper, 1960).
Synonyms
Avonia
Geographic Distribution
USA
Age Range
Beginning Stage in Treatise Usage:
upper Lower Permian (Roadian)
Beginning International Stage:
Roadian
Fraction Up In Beginning Stage:
0
Beginning Date:
274.37
Ending Stage in Treatise Usage:
lower Upper Permian (lower Kazanian)
Ending International Stage:
Roadian
Fraction Up In Ending Stage:
50
Ending Date:
271.79
Description
Small, transverse corpus with geniculate profile, deep cavity, elongate trails, rugae irregular on posterior disks, ribbing developed on trails, spines evenly distributed over ventral valve, thinner on dorsal valve, cardinal process with short shaft, lateral ridges extend across ears, long endospines border brachial areas anteriorly and laterally