Austrotoma antarctica is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudotomidae.
Distribution Fossils have been found in Lower Miocene strata at King George Island, West Antarctica.
References
Karczewski, L. (1985). Gastropods from the Cape Melville Formation (Lower Miocene) of King George island, West Antarctica. Palaeontologica Polonica. 49: 127–145.