Patterson, R.T., Cavazza, W., and Blenkinsop, J. 1993.Tortaguttus stiloensis, a new species of foraminifera from the Plio-Pleistocene of Calabria, Italy: Transactions of the American Microscopical Society, 112:168?171.
Tortaguttus stiloensis, a new species of benthic foraminifera is described from Middle Pleistocene sediments of Calabria, Italy. This species is characterized by radiating elevated costae on the surface of a double marginal carinae connected by numerous cross?struts.