Megasurcula condonana 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 condonana
Description The length of the shell attains 32 mm, its diameter 18.3 mm.
The shell shows a characteristic stout biconic profile and 11-12 strong nodes encircling the body whorl. The Kern River specimens differ somewhat by having a uniformly lower spire with sutures riding up higher onto preceding whorls so that only the nodes on the body whorl are exposed.Miocene Gastropods and Biostratigraphy of the Kern River Area, California; United States Geological Survey Professional Paper 642 : Megasurcula condonana
Distribution Fossils of this marine species have been found in Miocene strata in Oregon and California, United States.
References
Anderson, Frank Marion (1863–1945) & Bruce Martin 1914. Neocene record in the Temblor basin, California, and Neocene deposits of the San Juan district, San Luis Obispo County. Proceedings of the California Academy of Sciences, series 4, vol. 4, pp. 15–112, pl. 1–10.
External links Paleobio database: Megasurcula condonana