Records of the Western Australian Museum 25: 369–377 (2010). A new species of the genus Proxichione (Bivalvia: Veneridae) from Western Australia with notes on Late Tertiary species Thomas A. Darragh Department of Invertebrate Palaeontology, Museum Victoria, G.P.O. Box 666, Melbourne Victoria 3001, Australia. E-mail:
[email protected] Abstract Proxichione elimatula sp. nov. is described from the west and south coasts of Western Australia. Proxichione moondarae Darragh, 1965 is recorded from the Late Miocene of South Australia and Late Pliocene of Flinders Island, Tasmania. Proxichione cognata (Pritchard, 1903) is recorded from the Roe Calcarenite (Late Pliocene) of Western Australia. Keywords: new taxon, Murray Basin, Bass Basin. INTRODUCTION Australian Bight westwards and northwards to off Australian fossil species of Proxichione were Kalbarri, Western Australia) and the smallest of the revised and the genus differentiated from species P. persimilis (Iredale, 1930) (distributed from similar looking taxa of the Veneridae by Darragh central New South Wales northwards to southern (1965). Since that time specimens of a new living Queensland). This last species was designated as congeneric species have been accumulating in the the type species of Tigammona Iredale, 1930 (Figure collections of the Western Australian Museum. 1G-L). In addition, the geographical and stratigraphical range of the genus has been extended. Fossils of Proxichione belongs to a group of venerid bivalves Proxichione moondarae Darragh, 1965 have been with prominent comarginal and radial sculpture. collected in South Australia and on Flinders Island, The radial sculpture consists of simple, rounded Tasmania. Maxwell (1978) extended the range of ribs, whereas the comarginal sculpture consists of the genus to New Zealand by describing two taxa prominent erect lamellae, which are corrugated from the Duntroonian and Waitakian (Oligocene) where they cross the ribs and may be recurved of the South Island.