Mitromorpha granum is an extinct species of sea snail, a marine gastropod mollusk in the family Mitromorphidae.MolluscaBase (2018). Mitromorpha granum (Marwick, 1928) †. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=831647 on 2018-04-18
Description The length of the shell attains , its diameter .
Distribution This extinct species is endemic to New Zealand and was found off the Whenuaturu Peninsula.
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.
External links Marwick, J. "The Tertiary Mollusca of the Chatham Islands including a generic revision of the New Zealand Pectinidae." Transactions of the New Zealand institute. Vol. 58. No. 4. 1928.