Palaeozygopleura obesa, Yoo, 1994

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 : 84

Palaeozygopleura obesa n.sp.

PI. 16 figs 1-4

Palaeozygopleura sp. Yoo, 1988: 238, table 2.

Description. Shell small, high-spired cyrtoconoid, anomphalous. Protoconch of about 1Y2 smooth whorls, tending to be globose. Teleoconch of about 7 whorls with whorl profile of the upper surface flattened and the lower surface slightly convex; suture shallow, collabral ribs evenly spaced across the whorl and slightly opisthocyrt with transition from protoconch to teleoconch not distinct. Aperture incomplete (broken specimen).

Types. Holotype ( F78477 ) and 2 figured paratypes ( F78478 -9). There are 14 additional specimens ( F78476 ) from the type locality.

Type locality. 150 m west of 'Marohn' homestead, on the Scone-Gundy roadside, 4 km south-west of Gundy, NSW (Locality 28).

Stratigraphic position. In bioclastic limestone, upper part of the Dangarfield Formation.

Additional material. 4 specimens from 'Rangari' area (Localities 15 and 18) and 26 from various horizons at Glenbawn (Localities 29-32).

Geographic distribution. 'Rangari' to Glenbawn.

Dimensions. Figured sp. A	H	W	PA	NW
( F78472 ) ( F78471 )	1.8 mm 2.6	0.8 mm 0.9	24° 18	8 8

Geological age. Middle to late Toumaisian.

Etymology. Derived from the Latin obesus meaning swollen.

Remarks. This is only species referred to Palaeozygopleura , characterised by its high-spired cyrtoconoid shell with smooth globose protoconch. With the additional specimens recovered between 'Rangari' and Glenbawn, Palaeozygopleura sp. Yoo (1988) is here named obesa .