Br@chNet
Goniobrochus

Sous-embranchement (subphylum) des Rhynchonelliformea  
Classe des Rhynchonellata 
Ordre des Terebratulida 

Sous-ordre des Terebratulidina 
Super-famille des Dyscolioidae 


Genus Goniobrochus Cooper, 1983
 
[Type species = Dyscolia ewingi Cooper, 1973 (p. 19)]

Large, subcircular; surface ornament of radial, zigzag capillae; beak truncated, suberect, labiate; foramen large, mesothyrid to submesothyrid; pedicle collar short; cardinal process not developed, diductor muscles attached to apical pit; sockets wide; crural bases narrow troughs between weakly developed, narrow hinge plates and stout socket ridges; crura short, narrow; loop wide, almost square in outline.

Present

Diagnosis from volume 5 of the
Treatise on Invertebrate Paleontology (2006)

Extant Species of Goniobrochus
  • G. ewingi (Cooper, 1973)
    		•  Diagnosis


    G. ewingi   (Cooper, 1973)

    Type locality: station V-17-RD14: 38°58'S, 55°17'W, at 595-642 m, SE of Mar del Plata, Argentina.
    Depth range: 595-642 m, 683-1250 m, 595-1740 m

    Goniobrochus ewingi (Cooper, 1983, p. 260)

    Diagnosis (Cooper, 1983, p. 260)

    Externally suggestive of Dyscolia with zigzag capillae and wide, squarish loop.

    Facsimile of the Fig. 1419 of Treatise, p. 2138. Views : a-dorsal, b-lateral, and c-anterior views; d, interior of dorsal valve (Cooper, 1973).