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Compsothyris

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 Compsothyris Jackson, 1918
 
[Type species= Rhynchonella racovitzae Joubin, 1901 (p. 5)]
Uniplication trigonal, broad, gentle, dorsal fold poorly developed; shell surface with fine radial striae; foramen hypothyrid. Median dorsal septum ridgelike, supporting small septalium; crura somewhat spatulate, flat.
Present

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

Extant Species of Compsothyris
  • C. racovitzae (Joubin, 1901)
  • C. ballenyi Foster, 1974
    		•  Diagnosis
    Diagnosis


    Compsothyris racovitzae  (Joubin, 1901)

    Type locality: "St. Faubert VIII [70°00'S, 80°48'W], 500 m - 18 Octobre 1898".
    Depth range: 329 - 3970 m.

    Rhynchonella racovitzae  Joubin, 1901, p. 5
    Rhynchonella gerlachei  Joubin, 1901, p. 7
    Hemithiris striata  Thomson, 1918, p. 12
    Hispanirhynchia antarctica  Hatai, 1959

    Diagnosis - in preparation -

    Compsothyris ballenyi  Foster, 1974

    Type locality: “off Balleny Island, 2507-2525 m” [66°52’S, 164°32’E].
    Depth range: 2507 - 2525 m

     

    Diagnosis in preparation -