- Source: Gonyostomus goniostomus
Gonyostomus goniostomus is a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Strophocheilidae.
This species is endemic to Brazil. Although it has sometimes been thought to be extinct, it has nonetheless been found on the Buzios Island off the northern coast of the São Paulo State
References
Mansur, M.C.D. (1996). "Gonyostomus gonyostomus". IUCN Red List of Threatened Species. 1996: e.T9398A12982907. doi:10.2305/IUCN.UK.1996.RLTS.T9398A12982907.en. Retrieved 15 November 2021.