MolluscaBase taxon details
original description
(of Mactra (Cyclomactra) williamsi Marwick, 1948 †) Marwick J. (1948). Lower Pliocene Mollusca from Otahuhu, Auckland. <em>New Zealand Geological Survey Palaeontological Bulletin.</em> 16: 38 pp., 8 pl.
page(s): 22, pl. 3 figs 6-8 [details]
basis of record
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. [details]