Megasurcula guayasensis is an extinct species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae, the turrids and allies.Worldwide Mollusc Species Data Base: Megasurcula guayasensis
Distribution Fossils of this marine species have been found in Miocene strata in Ecuador.
References
External links California Academy of Sciences: photo of Megasurcula guayasensis Bulletin of American Paleontology, California Acad. Sci., Proc, 4th ser., 4, VOL. XXXIII (1949-1952)