Megasurcula cryptoconoides 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 cryptoconoides
Distribution Fossils of this marine species have been found in Late Miocene strata in the Otokawa Formation, Japan.
References
Makiyam, J. 1926. Tertiary Fossils from North Kankyo-do, Korea. Memoirs of the College of Science, Kyoto Imperial University, ser. B, Vol. II, No. 3, pp. 143–160, pls. XI-XIII.
External links The Tohoku University Museum: Megasurcula cryptoconoides