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Isogramma
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Chileata
Order:
Dictyonellida
Superfamily:
Eichwaldioidea
Family:
Isogrammidae
Formal Genus Name and Reference:
Type Species:
Images
(Click to enlarge in a new window)
Fig. 118,1a,b. I. texanum COOPER, Gaptank Formation, Carboniferous, Marathon, western Texas; a, dorsal external mold, × 1.1; b, holotype, ventral external mold, USNM 111688a, ×1.1 (Cooper, 1952a).——Fig. 118,1c. I. lobatum COOPER & G RANT , Cathedral Mountain Formation, Permian, western Texas; dorsal interior, USNM 151384, × 0.8 (Cooper & Grant, 1974).——Fig . 118,1d. I. salteri B RAND , Hotwells Limestone, Carboniferous, Compton Martin, Somerset; detail of colleplax, BGS Zo1525, ×5 (Wright, 1981).
Synonyms
Geographic Distribution
Great Britain, Austria, Germany, Spain, Poland, Kazakhstan, Uzbekistan, Carboniferous; USA, European Russia, Ukraine, China, Carboniferous–Permian; Japan, Permian
Age Range
Beginning Stage in Treatise Usage:
Carboniferous
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Permian
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9
Description
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Chileata
Order:
Dictyonellida
Superfamily:
Eichwaldioidea
Family:
Isogrammidae
Formal Genus Name and Reference:
Type Species:
Images
(Click to enlarge in a new window)
Fig. 118,1a,b. I. texanum COOPER, Gaptank Formation, Carboniferous, Marathon, western Texas; a, dorsal external mold, × 1.1; b, holotype, ventral external mold, USNM 111688a, ×1.1 (Cooper, 1952a).——Fig. 118,1c. I. lobatum COOPER & G RANT , Cathedral Mountain Formation, Permian, western Texas; dorsal interior, USNM 151384, × 0.8 (Cooper & Grant, 1974).——Fig . 118,1d. I. salteri B RAND , Hotwells Limestone, Carboniferous, Compton Martin, Somerset; detail of colleplax, BGS Zo1525, ×5 (Wright, 1981).
Synonyms
Geographic Distribution
Great Britain, Austria, Germany, Spain, Poland, Kazakhstan, Uzbekistan, Carboniferous; USA, European Russia, Ukraine, China, Carboniferous–Permian; Japan, Permian
Age Range
Beginning Stage in Treatise Usage:
Carboniferous
Beginning International Stage:
Tournaisian
Fraction Up In Beginning Stage:
0
Beginning Date:
359.3
Ending Stage in Treatise Usage:
Permian
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
100
Ending Date:
251.9