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Retimarginifera
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Strophomenata
Order:
Productida
Suborder:
Productidina
Superfamily:
Productoidea
Family:
Productellidae
Subfamily:
Marginiferinae (Tribe Paucispiniferini)
Formal Genus Name and Reference:
Retimarginifera WATERHOUSE, 1970, p. 123
Type Species:
R. perforata, OD
Images
(Click to enlarge in a new window)
Fig. 295,1a–d. *R. perforata, Permian, Byro Group, Western Australia, Carnavon Basin; a, holotype viewed ventrally, U.W.A. 59282, × 2; b, ventral valve exterior, × 2 (Waterhouse, 1970); c, dorsal view of shell, ×1.5; d, dorsal valve interior, × 1.5 (Archbold, 1984).——Fig . 295,1e–g. R. celeteria G RANT , Permian, Ko Muk, Thailand; e, dorsal view of shell, ×1; f,g, shell viewed ventrally, laterally, ×1 (Grant, 1976).
Synonyms
Geographic Distribution
Western Australia, Thailand, Himalayas, northern China
Age Range
Beginning Stage in Treatise Usage:
Lower Permian (Artinskian)
Beginning International Stage:
Artinskian
Fraction Up In Beginning Stage:
0
Beginning Date:
290.51
Ending Stage in Treatise Usage:
Lower Permian (lower Kungurian)
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
50
Ending Date:
278.84
Description
Small, transverse, widest at hinge, profile deeply concavoconvex, deep ventral sulcus, visceral disk reticulate with clear ribbing commonly extending along trail, six major spines, in pairs on ears, venter, sessile, trifid cardinal process, lateral ridges extend as marginal ridge that may be lost anteriorly
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Subphylum:
Rhynchonelliformea
Class:
Strophomenata
Order:
Productida
Suborder:
Productidina
Superfamily:
Productoidea
Family:
Productellidae
Subfamily:
Marginiferinae (Tribe Paucispiniferini)
Formal Genus Name and Reference:
Retimarginifera WATERHOUSE, 1970, p. 123
Type Species:
R. perforata, OD
Images
(Click to enlarge in a new window)
Fig. 295,1a–d. *R. perforata, Permian, Byro Group, Western Australia, Carnavon Basin; a, holotype viewed ventrally, U.W.A. 59282, × 2; b, ventral valve exterior, × 2 (Waterhouse, 1970); c, dorsal view of shell, ×1.5; d, dorsal valve interior, × 1.5 (Archbold, 1984).——Fig . 295,1e–g. R. celeteria G RANT , Permian, Ko Muk, Thailand; e, dorsal view of shell, ×1; f,g, shell viewed ventrally, laterally, ×1 (Grant, 1976).
Synonyms
Geographic Distribution
Western Australia, Thailand, Himalayas, northern China
Age Range
Beginning Stage in Treatise Usage:
Lower Permian (Artinskian)
Beginning International Stage:
Artinskian
Fraction Up In Beginning Stage:
0
Beginning Date:
290.51
Ending Stage in Treatise Usage:
Lower Permian (lower Kungurian)
Ending International Stage:
Kungurian
Fraction Up In Ending Stage:
50
Ending Date:
278.84
Description
Small, transverse, widest at hinge, profile deeply concavoconvex, deep ventral sulcus, visceral disk reticulate with clear ribbing commonly extending along trail, six major spines, in pairs on ears, venter, sessile, trifid cardinal process, lateral ridges extend as marginal ridge that may be lost anteriorly