Br@chNet
Terebratella

Sous-embranchement (subphylum) des Rhynchonelliformea
Classe des Rhynchonellata
Ordre des Terebratulida
Sous-Ordre des Terebratellidina
Super-famille des Terebratelloidea

 
 
 
 
 


Genus Terebratella d'Orbigny, 1847, p. 269
[= Waltonia Davidson, 1850, p. 474 (type: W. valenciennesii Davidson, 1850); = Magasella Dall, 1870, p. 134 (type: Terebratella evansii Davidson, 1852, p. 77)]

[Type species = Terebratula chilensis Broderip, 1833, p. 141 - (= Anomia dorsata Gmelin, 1790 (p. 3, 348); = Terebratula flexuosa King, 1835, p. 337; = Terebratula patagonica Gould, 1850, p. 347]

Medium to large, transversely ovate, unisulcate, costate to strongly multicostate; beak erect to suberect, attrite, foramen medium to large, submesothyrid to mesothyrid, deltidial plates commonly conjunct. Cardinalia weakly to moderately thickened, hinge plates excavate, moderately to steeply inclined, meeting on low median septum to form septalium; adult loop trabecular.
Lophophore plectolophous.

Oligocene - Present

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

    Extant Species of Terebratella
  • T. dorsata (Gmelin, 1790)
  • T. labradorensis Sowerby, 1845
  • T. crenulata Sowerby, 1846
  • T. tenuis Tort, 2003
    		•  Diagnosis


    Diagnosis


    Terebratella dorsata   (Gmelin, 1790)

    Type locality: “Habitat in freto magellanico.”
    Depth range: 9 - 500 m (? 2653 m).

    Anomia dorsata Gmelin, 1790
    Terebratella flexuosa King, 1831
    Terebratula sowerbii King, 1831
    Terebratula sowerbi King & Broderip, 1832 (non Defrance, 1828)
    Terebratella dorsata Fischer & Oelhert, 1892
    Terebratula chilensis Broderip, 1833
    Terebratula lupinus Philippi, 1845
    Terebratula rhombea Philippi, 1845
    Terebratula patagonica Gould, 1850
    Terebratella dorsata var. submutica Fischer & Oelhert, 1892
    ? Terebratella rubiginosa Dall, 1871
    Terebratella enzenspergeri Blochmann, 1906
    Terebratella submutica Hertlein & Grant, 1944
    Terebratella? enzenspergeri Forster, 1974

    [more in Fischer & Œhlert 1892, Davidson 1987, Dall 1920]

    Diagnose in preparation -

     

    Should be added:
  • Muscle disposition: see Fig. in front -

    •  

    ML

    Muscle attachment (modified, from Foster, 1974 - with absence of separate posterior accessory diductor muscles base, the pair of ventral adductor muscle bases in &a single unit)

     

    Terebratella tenuis   Tort, 2003

    Type locality: SE Tanimbar Isl., Indonesia
        [8°42'S, 131°53'E)]
    Depth range: 356-358 m

    Diagnose - (Tort, 2003)

    Species of medium size, round or pentagonal in outline, thin. Frontal commissure slightly sulciplicate. Valves without ornamentation, almost translucent. Beak suberect. Loop terebratelliform. Thin lateral connecting bands may be present between the descending branches and the septum.