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Bihenithyris
Classification
Phylum:
Class:
Rhynchonellata
Order:
Terebratulida
Superfamily:
Loboidothyridoidea
Family:
Loboidothyrididae
Formal Genus Name and Reference:
Bihenithyris MUIR-WOOD, 1935, p. 110
Type Species:
* B. barringtoni, OD
Images
(Click to enlarge in a new window)
Fig. 1379, 3a-d. * B. barringtoni, a-c, dorsal, lateral, and anterior views of holotype, BMNH B 85648, Somalia, X1 (Muir-Wood, 1965 a ), d, interior of dorsal valve of specimen, Israel, X1 (Cooper, 1983).
Synonyms
Geographic Distribution
Somalia, Egypt, Saudi Arabia, Israel
Age Range
Beginning Stage in Treatise Usage:
Middle Jurassic (Callovian)
Beginning International Stage:
Callovian
Fraction Up In Beginning Stage:
0
Beginning Date:
165.29
Ending Stage in Treatise Usage:
Middle Jurassic (Callovian)
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Medium size, subpentagonal, smooth, ventribiconvex, anterior commissure sulciplicate to bisulcate, beak massive, suberect to incurved, symphytium hidden, foramen large, permesothyrid, pedicle collar present, cardinal process short, broad, medianly depressed, hinge plates wide, tapering, forming deep U-shape with socket ridge, loop 0.45 dorsal valve length, transverse band almost horizontal, terminal points moderately long.
References
Museum or Author Information
Classification
Phylum:
Class:
Rhynchonellata
Order:
Terebratulida
Superfamily:
Loboidothyridoidea
Family:
Loboidothyrididae
Formal Genus Name and Reference:
Bihenithyris MUIR-WOOD, 1935, p. 110
Type Species:
* B. barringtoni, OD
Images
(Click to enlarge in a new window)
Fig. 1379, 3a-d. * B. barringtoni, a-c, dorsal, lateral, and anterior views of holotype, BMNH B 85648, Somalia, X1 (Muir-Wood, 1965 a ), d, interior of dorsal valve of specimen, Israel, X1 (Cooper, 1983).
Synonyms
Geographic Distribution
Somalia, Egypt, Saudi Arabia, Israel
Age Range
Beginning Stage in Treatise Usage:
Middle Jurassic (Callovian)
Beginning International Stage:
Callovian
Fraction Up In Beginning Stage:
0
Beginning Date:
165.29
Ending Stage in Treatise Usage:
Middle Jurassic (Callovian)
Ending International Stage:
Callovian
Fraction Up In Ending Stage:
100
Ending Date:
161.53
Description
Medium size, subpentagonal, smooth, ventribiconvex, anterior commissure sulciplicate to bisulcate, beak massive, suberect to incurved, symphytium hidden, foramen large, permesothyrid, pedicle collar present, cardinal process short, broad, medianly depressed, hinge plates wide, tapering, forming deep U-shape with socket ridge, loop 0.45 dorsal valve length, transverse band almost horizontal, terminal points moderately long.