Tomopleura excavata is an extinct species of sea snail, a marine gastropod mollusk in the family Borsoniidae. Description Distribution This extinct marine species from the Upper Cenozoic was found in New Zealand. References 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. excavata Gastropods of New Zealand Gastropods described in 1877