Pleuromalaxis olssoni (Pilsbry in Olsson and Harbison, 1953) [new combination]

Scanning Electron Micrograph (SEM)

    Cochran Pit, LaBelle, Hendry Co., FL (Caloosahatchee Formation). Bill and Carol Lyons! 1980's (0.95mm.). UF IP 329735. Originally placed in Cyclostremiscus, this taxon appears to be extinct, rare, and absent from the earlier and extensively-studied Pinecrest beds; compare with the Recent Pleuromalaxis balesi (Pilsbry and McGinty, 1945). SEM by Dr. H. G .Lee in collaboration with Dr. Ann Heatherington, Dept. of Geological Sciences, University of Florida, Gainesville.