Cryptoborsonia pleurotomella

Cryptoborsonia pleurotomella is an extinct species of sea snail, a marine gastropod mollusk, in the superfamily Conoidea, currently unassigned to a family. Dating to the middle Miocene, fossils of the species have been found in the Otway Basin and Port Phillip Basin of Victoria, Australia.

Description

In the original description, Powell described the species as follows:
The holotype measured in height and in diameter.

Taxonomy

The species was first described by A. W. B. Powell in 1944, in the same paper where he described the genus Cryptoborsonia. The holotype is held by the Auckland War Memorial Museum.

Distribution

C. pleurotomella is found in the Muddy Creek Formation of the Otway Basin in Victoria, and the Gellibrand Formation of the Port Phillip Basin, dating to the middle Miocene. The type location for the species is Balcombe Bay / Jullul Bay.