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Demonedys
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Chonetoidea
Family:
Anopliidae
Formal Genus Name and Reference:
Demonedys GRANT, 1976, p. 66
Type Species:
D. fastigiata, OD
Images
(Click to enlarge in a new window)
Fig. 249, 5a-d. *D. fastigiata, Permian, Thailand, ventral valve exterior, interior, dorsal valve interior, juvenile dorsal interior, x4$ (Grant, 1976)."
Synonyms
Geographic Distribution
Thailand, Nepal, Western Australia
Age Range
Beginning Stage in Treatise Usage:
Permian (Artinskian)
Beginning International Stage:
Artinskian
Fraction Up In Beginning Stage:
0
Beginning Date:
290.51
Ending Stage in Treatise Usage:
Permian (Tatarian)
Ending International Stage:
Wuchiapingian
Fraction Up In Ending Stage:
40
Ending Date:
257.43
Description
Shell small, typically transversely subtrigonal in outline, shell strongly concavoconvex, almost trilobate with large median ventral fold, corresponding dorsal sulcus, surface smooth, pseudocapillate, with few lamellose concentric growth lines, spines orthomorph oblique, symmetrically arranged, ventral interior with short median septum, dorsal interior medianly folded with short anderidia, pair of long divergent accessory septa, cardinal process wide, posteriorly elevated above valve floor, supported by straight, narrow inner socket ridges anteriorly divergent at 100° to 105°, deep anterior pit.
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Strophomenata
Order:
Productida
Superfamily:
Chonetoidea
Family:
Anopliidae
Formal Genus Name and Reference:
Demonedys GRANT, 1976, p. 66
Type Species:
D. fastigiata, OD
Images
(Click to enlarge in a new window)
Fig. 249, 5a-d. *D. fastigiata, Permian, Thailand, ventral valve exterior, interior, dorsal valve interior, juvenile dorsal interior, x4$ (Grant, 1976)."
Synonyms
Geographic Distribution
Thailand, Nepal, Western Australia
Age Range
Beginning Stage in Treatise Usage:
Permian (Artinskian)
Beginning International Stage:
Artinskian
Fraction Up In Beginning Stage:
0
Beginning Date:
290.51
Ending Stage in Treatise Usage:
Permian (Tatarian)
Ending International Stage:
Wuchiapingian
Fraction Up In Ending Stage:
40
Ending Date:
257.43
Description
Shell small, typically transversely subtrigonal in outline, shell strongly concavoconvex, almost trilobate with large median ventral fold, corresponding dorsal sulcus, surface smooth, pseudocapillate, with few lamellose concentric growth lines, spines orthomorph oblique, symmetrically arranged, ventral interior with short median septum, dorsal interior medianly folded with short anderidia, pair of long divergent accessory septa, cardinal process wide, posteriorly elevated above valve floor, supported by straight, narrow inner socket ridges anteriorly divergent at 100° to 105°, deep anterior pit.