Notes on the Molluscan Fauna of The Montezuma Formation, Costa Rica

Abstract

Only recently has a paper on the Montezuma Formation (Pliocene-Pleistocene of Costa Rica) published in 1986 come to my attention.  This paper is by Teresita Aguilar and Rudolf Fischer, with the Gastropoda being by Aguilar and the Bivalvia by Fischer.  As faunal studies of this type are used in various compilations for both spatial and temporal ranges of taxa, the present paper is written to point out incorrect identifications of both genus-group and species-group taxa , particularly in the Cancellariidae as well as some others.