Monoplex macrodon is a species of predatory sea snail, a marine gastropod mollusk in the family Cymatiidae. Distribution This species is present in Baja California, Mexico – Colombia, in Galápagos, Clipperton Island and Cocos Island. Description Shells of Monoplex macrodon can reach a size of . Bibliography The Recent Molluscan Marine Fauna of the Islas Galápagos, p 32 Ranellidae & Personidae of the World, Pl. 14/3 Bull. Am. Mus. Nat. Hist., Vol. 262, p 122 Valenciennes A. (1832). Coquilles univalves marines de l'Amérique équinoxiale, recueillies pendant le voyage de MM. A. de Humboldt et A. Bonpland. pp. 262–339, pl. 57. In: A. von Humboldt & A. Bonpland (eds), Observations de zoologie et d'anatomie comparée Beu A.G. 2010 [August]. Neogene tonnoidean gastropods of tropical and South America: contributions to the Dominican Republic and Panama Paleontology Projects and uplift of the Central American Isthmus. Bulletins of American Paleontology 377-378: 550 pp, 79 pls. References External links Jax Shells Cymatiidae Gastropods described in 1832