Crassula aequilatera
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Venerida
Superfamily:	Mactroidea
Family:	Mactridae
Genus:	Crassula
Species:	C. aequilatera
Binomial name
Crassula aequilatera (Reeve, 1854)
Synonyms
Mactra aequilatera Reeve, 1854 Mactra aequilateralis Deshayes, 1854 Spisula aequilateralis (Deshayes, 1854)

Crassula aequilatera, known as the triangle shell, is a surf clam, a moderately large marine bivalve mollusc in the family Mactridae. ^[1]

This marine species is endemic to New Zealand.

• Huber, M. (2010). Compendium of bivalves. A full-color guide to 3,300 of the world's marine bivalves. A status on Bivalvia after 250 years of research. Hackenheim: ConchBooks. 901 pp., 1 CD-ROM.
• Powell A. W. B., William Collins Publishers Ltd, Auckland 1979 ISBN 0-00-216906-1

• Reeve, L. A. (1854). Monograph of the genus Mactra. In: Conchologia Iconica, or, illustrations of the shells of molluscous animals, vol. 8, pl. 1-21 and unpaginated text. L. Reeve & Co., London.
• Deshayes, G. P. (1854). Descriptions of fourteen new species of Mactra, in the collection of Mr. Cuming. Proceedings of the Zoological Society of London. (1853) 21: 14-17
• Beu A.G. (2004) Marine Mollusca of oxygen isotope stages of the last 2 million years in New Zealand. Part 1: Revised generic positions and recognition of warm-water and cool-water migrants. Journal of the Royal Society of New Zealand 34(2): 111-265