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Marginifera
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Productoidea
Family:
Productellidae
Formal Genus Name and Reference:
Marginifera WAAGEN, 1884, p. 713
Type Species:
M. typica, OD
Images
(Click to enlarge in a new window)
Fig. 288, $1 a-e .* M$. typica, Permian, Wargal Limestone, Pakistan, Khisor Range, $a, b$, posterior, anteroventral views of ventral valve, x1.5$, $c$, dorsal view of shell, $\\times$, $d$, lateral view of shell, $X_{2}, e$, dorsal valve interior, $X_{2}$ (Grant, 1968).
Synonyms
Strigospina
Geographic Distribution
Himalayas, southeastern Asia, north, northeastern China
Age Range
Beginning Stage in Treatise Usage:
Lower Permian (upper Artinskian)
Beginning International Stage:
Artinskian
Fraction Up In Beginning Stage:
66
Beginning Date:
285.75
Ending Stage in Treatise Usage:
lower Upper Permian (Kazanian)
Ending International Stage:
Roadian
Fraction Up In Ending Stage:
100
Ending Date:
269.21
Description
Outline subquadrate with well-differentiated, wide ears, ventral profile strongly convex near geniculation, dorsal disk weakly concave with series of two to three trails, ribbing commonly weak, reticulate disks, spines in prominent rows along flanks plus others widely scattered on venter, none at hinge, ear baffles in both valves, dorsal lateral ridges strongly divergent, continue straight across ears, becoming marginal ridge, endospines in single row anterior to brachial ridges
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Productoidea
Family:
Productellidae
Formal Genus Name and Reference:
Marginifera WAAGEN, 1884, p. 713
Type Species:
M. typica, OD
Images
(Click to enlarge in a new window)
Fig. 288, $1 a-e .* M$. typica, Permian, Wargal Limestone, Pakistan, Khisor Range, $a, b$, posterior, anteroventral views of ventral valve, x1.5$, $c$, dorsal view of shell, $\\times$, $d$, lateral view of shell, $X_{2}, e$, dorsal valve interior, $X_{2}$ (Grant, 1968).
Synonyms
Strigospina
Geographic Distribution
Himalayas, southeastern Asia, north, northeastern China
Age Range
Beginning Stage in Treatise Usage:
Lower Permian (upper Artinskian)
Beginning International Stage:
Artinskian
Fraction Up In Beginning Stage:
66
Beginning Date:
285.75
Ending Stage in Treatise Usage:
lower Upper Permian (Kazanian)
Ending International Stage:
Roadian
Fraction Up In Ending Stage:
100
Ending Date:
269.21
Description
Outline subquadrate with well-differentiated, wide ears, ventral profile strongly convex near geniculation, dorsal disk weakly concave with series of two to three trails, ribbing commonly weak, reticulate disks, spines in prominent rows along flanks plus others widely scattered on venter, none at hinge, ear baffles in both valves, dorsal lateral ridges strongly divergent, continue straight across ears, becoming marginal ridge, endospines in single row anterior to brachial ridges