Straparollus davidi Dun & Benson

Description. Campbell & Engel (1963:95).

Type. Lectotype (F78391).

Geographic distribution. From 'Rangari' south to Glenbawn.

Geological age. Middle to late Tournaisian.

Remarks. This is a very common species of relatively large size. The single specimen (FI773, Geological and Mining Museum, Sydney) described by Dun & Benson (1920) from Carroll is missing (Campbell & Engel, 1963). The specimen here chosen as lectotype is rather young and well preserved. It was recovered from the lower part of the Namoi Formation in Swains Gully, where the species occurs abundantly (Locality 25). The species has a short and smooth protoconch, and is planispiral in early whorls.