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Stereochia
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Productoidea
Family:
Productidae
Formal Genus Name and Reference:
Stereochia GRANT, 1976, p. 150
Type Species:
*S. litostyla, OD
Images
(Click to enlarge in a new window)
Fig. 337, 1a-e. *S. litostyla, upper Artinskian, Ko Muk, Thailand, $a, b$, holotype, viewed laterally, dorsally, USNM 212592, x0.75$, c, d, ventral valve exterior, interior, $X_{1}, e$, dorsal valve interior, $X_{1}$ (Grant, 1976).
Synonyms
Geographic Distribution
Thailand, Indonesia, ?northeastern Asia
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 Permian (upper Artinskian)
Ending International Stage:
Artinskian
Fraction Up In Ending Stage:
100
Ending Date:
283.3
Description
Medium size, widest at hinge, disks of both valves reticulate, trails costate, spines thick, but few, single on ears, venter, ventral adductor platforms raised, dendritic, diductor scars strongly striated, cardinal process trifid, shaft short, continuous with median septum, lateral ridges, ear baffles, latter strong in ventral valve
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Productoidea
Family:
Productidae
Formal Genus Name and Reference:
Stereochia GRANT, 1976, p. 150
Type Species:
*S. litostyla, OD
Images
(Click to enlarge in a new window)
Fig. 337, 1a-e. *S. litostyla, upper Artinskian, Ko Muk, Thailand, $a, b$, holotype, viewed laterally, dorsally, USNM 212592, x0.75$, c, d, ventral valve exterior, interior, $X_{1}, e$, dorsal valve interior, $X_{1}$ (Grant, 1976).
Synonyms
Geographic Distribution
Thailand, Indonesia, ?northeastern Asia
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 Permian (upper Artinskian)
Ending International Stage:
Artinskian
Fraction Up In Ending Stage:
100
Ending Date:
283.3
Description
Medium size, widest at hinge, disks of both valves reticulate, trails costate, spines thick, but few, single on ears, venter, ventral adductor platforms raised, dendritic, diductor scars strongly striated, cardinal process trifid, shaft short, continuous with median septum, lateral ridges, ear baffles, latter strong in ventral valve