Turbonitella, de Koninck, 1881

Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, Records of the Australian Museum 46 (1), pp. 63-120 : 83

Turbonitella sp.

PI. 15 figs 1-2

Description. Shell very small, turbiniform, anomphalous. Protoconch of about 11A smooth whorls, apex bulbous. Teleoconch of about 21h whorls; shell profile strong convex, suture shallow, whorl embracing much of previous whorl, a row of nodes between suture and collar-like adpressed zone, continues to a row of collabrally lengthened pustules at upper face of whorl. Aperture convex, lenticular in shape, columellar and inner lips thickened with strongly excavated, outer lip thin.

Dimensions. Figured specimens	H	W	PA	NW
( F78466 ) 5.0 mm ( F78465 )2.6		3.7 mm 2.3	90° 95	5 31h

Stratigraphic position. In bioclastic limestone, 130 m above the base of the Namoi Formation.

Material. 7 specimens from south-east of 'Rangari' (Locality 18), 3 from Swains Gully (Locality 25), 2 from 'Marohn' (Locality 28) and 1 from Glenbawn (Locality 29).

Geographic distribution. 'Rangari' to Glenbawn.

Geological age. Middle to late Tournaisian.

Remarks. The figured specimens resemble the holotype Turbonitella biserialis(Phillips) designated by Knight (1941) in being a turbiniform with strong collabral ribs on shoulder, but differs in lacking a row of ribs on the lower whorl face.