Zemacies ordinaria is an extinct species of sea snail, a marine gastropod mollusk in the family Borsoniidae.Marshall, B. (2015). Zemacies prendrevillei Marwick, 1928 †. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=831529 on 2016-04-10
Distribution This extinct marine species is endemic to New Zealand and was found in Lower Pliocene strata of the Chatham Islands.
References
Marwick, Trans. N. Z. Inst., vol. 58, p. 489, 506, fig. 141. 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.