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Dielasmina
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Terebratulida
Superfamily:
Dielasmatoidea
Family:
Dielasmatidae
Formal Genus Name and Reference:
Dielasmina WAAGEN, 1882, p. 335
Type Species:
D. plicata, OD
Images
(Click to enlarge in a new window)
Fig. 1343, 4a-d. *D. plicata, Capitanian, Wuchiapingian, dorsal, ventral, lateral, and anterior views, X1 (Waagen, 1882)., ‘——Fig. 1343, 4 e. D. sp., interior of dorsal view with broken transverse band, USNM 489614, X3 (new).
Synonyms
Geographic Distribution
Pakistan (Salt Range)
Age Range
Beginning Stage in Treatise Usage:
Permian (Capitanian, middle Lopingian)
Beginning International Stage:
Capitanian
Fraction Up In Beginning Stage:
0
Beginning Date:
264.34
Ending Stage in Treatise Usage:
Permian (Capitanian, middle Lopingian)
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
25
Ending Date:
253.66
Description
Medium to large, external homeomorph of Hemiptychina, dorsal valve geniculated sharply near midlength, dental plates and pedicle collar well developed, cardinal process shelflike, fulcral plates high, outer hinge plates very narrow, inner hinge plates converging medially from apex of valve to form a narrow septalium, median ridge extending from anterior end of septalium to midlength, crural processes low, descending lamellae of loop short and narrow, reaching valve midlength. Permian (Capitanian, middle Lopingian): Pakistan (Salt Range).
References
Museum or Author Information
Classification
Phylum:
Brachiopoda
Class:
Rhynchonellata
Order:
Terebratulida
Superfamily:
Dielasmatoidea
Family:
Dielasmatidae
Formal Genus Name and Reference:
Dielasmina WAAGEN, 1882, p. 335
Type Species:
D. plicata, OD
Images
(Click to enlarge in a new window)
Fig. 1343, 4a-d. *D. plicata, Capitanian, Wuchiapingian, dorsal, ventral, lateral, and anterior views, X1 (Waagen, 1882)., ‘——Fig. 1343, 4 e. D. sp., interior of dorsal view with broken transverse band, USNM 489614, X3 (new).
Synonyms
Geographic Distribution
Pakistan (Salt Range)
Age Range
Beginning Stage in Treatise Usage:
Permian (Capitanian, middle Lopingian)
Beginning International Stage:
Capitanian
Fraction Up In Beginning Stage:
0
Beginning Date:
264.34
Ending Stage in Treatise Usage:
Permian (Capitanian, middle Lopingian)
Ending International Stage:
Changhsingian
Fraction Up In Ending Stage:
25
Ending Date:
253.66
Description
Medium to large, external homeomorph of Hemiptychina, dorsal valve geniculated sharply near midlength, dental plates and pedicle collar well developed, cardinal process shelflike, fulcral plates high, outer hinge plates very narrow, inner hinge plates converging medially from apex of valve to form a narrow septalium, median ridge extending from anterior end of septalium to midlength, crural processes low, descending lamellae of loop short and narrow, reaching valve midlength. Permian (Capitanian, middle Lopingian): Pakistan (Salt Range).