Abstract
An analysis of the Jamaican Upper Oligocene echinoids, based on new collections made from the Brown's Town Formation, has identified 12 species, a diversity comparable with other Caribbean faunas of the same age and also with later Eocene faunas of Jamaica. While the main extinction of Caribbean echinoid taxa was apparently at (or before) the Terminal Eocene Event, Jamaica's fauna underwent a reduction in species diversity in the mid middle Eocene, coincident with the change in sedimentation from the impure Yellow Limestone Group to the pure White Limestone Supergroup. Although certain Yellow Limestone species persisted into the late Eocene, the Upper Oligocene fauna shows considerable taxonomic turn-
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