Austrotoma deducta is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudotomidae.
Description The subsutural fold is weak to moderately developed, while the spiral sculpture remains the dominant feature across the entire shell. Axial elements are absent on the body whorl, with approximately 16 present on each preceding whorl. The spire is relatively low, measuring less in height than the aperture.
Distribution Fossils have been found in Upper Miocene strata at Gisborne, New Zealand.
References
Marwick, J. (1931). The Tertiary Mollusca of the Gisborne District. New Zealand Geological Survey Paleontological Bulletin 13:1-177. 18: pls. Maxwell, P. A. (2009). Cenozoic Mollusca. Pp 232-254 in Gordon, D. P. (ed.) New Zealand inventory of biodiversity. Volume one. Kingdom Animalia: Radiata, Lophotrochozoa, Deuterostomia. Canterbury University Press, Christchurch.