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Hispanirhynchia

Sous-embranchement (subphylum) des Rhynchonelliformea  
Classe des Rhynchonellata 
Ordre des Rhynchonellida 
Super-famille des Pugnacoidea 
Super-famille des Dimerelloidea 
Super-famille des Norelloidea 
Super-famille des Hemithiridoidea 


Genus Hispanirhynchia Thomson, 1927
 
[Type species= Rhynchonella cornea Fischer in Davidson, 1887, p. 171]
Elongate-triangular with greatest width anterior to midvalve; ventribiconvex; rectimarginate to incipiently uniplicate; beak short, suberect, foramen large, incomplete, hypothyrid; deltidial plates small, disjunct. Ventral valve with well-developed but incomplete pedicle collar and thick teeth supported by short dental plates; dorsal valve with crenulated sockets, small and narrow hinge plates, short bladelike crura and thick median ridge extending to apex of valve.
Eocene - Present

Diagnosis from volume 4 of the
Treatise on Invertebrate Paleontology (2002)

Extant Species of Hispanirhynchia
  • H. cornea (Fischer in Davidson, 1887)
    		•  Diagnosis


    Hispanirhynchia cornea  (Fischer in Davidson, 1887)

    Type locality: W de Mogador (today Essaouira, Morocco), dragage 38, June, 27 1883, 1050 m - 'Talisman' Expedition (Fischer & Œhlert, 1891)

    Nota: The type locality mentioned by Davidson (1887, p. 172) is "dredged off Cape St. Vincent ('Talisman' Expedition) fathoms depth 571/2" (= 105 m). Fischer & Œhlert (1891) do not mention dredging station off Portugal by the 'Talisman' expedition ; they quote two other samples between Morocco and the Canary Islands: dragage 53 (June 26, 1883), 1180 m; dragage 53 (June 27, 1883), 865 m, as well as dragage 1 (June 13, 1881), 2018 m, off Cape Finistère by the 'Travailleur' expedition. One can suggest a confusion on behalf of Davidson in the localization, as well as on the depth 105 m, while 1050 m is given by Fischer & Œhlert (1891). Consequently, the type locality is attributed to the first record of H. cornea by the 'Talisman' expedition, while the depth range may probably need revision.

    Depth range: 105? - 2388 m

    Rhynchonella sicula Seguenza: Jeffreys, 1870
    Rhynchonella cornea Fischer in Davidson, 1887, p. 171
    Rhynchonella cornea Fischer: Fischer & Œhlert, 1891
    Hemithyris cornea: Dall, 1920

     

    Diagnose in preparation -