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

Genus Terebratalia Beecher, 1895, p. 380

[= Pacifithyris Hatai, 1938, p. 98 : type = Terebratalia xanthica Dall, 1920, p. 346] [Type species = Terebratula transversa Sowerby, 1846, p. 94 (= Magasella radiata Dall, 1877]

Medium to large, outline extremely variable from subcircular to transversely oval, mildly unisulcate, ornamentation highly variable from smooth to costate; beak short, suberect, strongly attrite, beak ridges sharp, foramen large, mesothyrid, deltidial plates disjunct. Pedicle collar short, dental plates ventrally recessive, lateral umbonal cavities narrow and tending to infill with secondary shell. Cardinal process transverse-oval myophore; cardinalia strong with some median shell thickening, dorsal adjustor scars impressed on thickened inner socket ridges, crura fairly long, slender, roughly circular in cross section; loop tra- becular with very slender, lateral connecting bands extending from low median septum.

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

Extant Species of Terebratalia

T. transversa (Sowerby, 1846) T. coreanica (Adams et Reeve, 1850) T. gouldi (Dall, 1891) T. xanthica (Dall, 1920)

Diagnosis