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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

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Fossil Image
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

Muir-Wood, 1965, Cooper, 1983