Penion finlayi is an extinct species of marine snail or whelk, belonging to the true whelk family Austrosiphonidae.
Distribution Fossils of Penion finlayi were found in Kaawa Creek or Pakaurangi Point, New Zealand.
References
Laws, C. R. "New Tertiary Mollusca from New Zealand. No. 2." Transactions and Proceedings of the New Zealand Institute. Vol. 62. 1932. Ponder, W. F. (1973). A review of the Australian species of Penion Fischer (Mollusca: Buccinidae). Journal of the Malacological Society of Australia. 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.