ABSTRACT

Echinoids are well-known from the Eocene Yellow Limestone Group of Jamaica, but have been documented only from a few horizons in the overlying Eocene formations of the White Limestone Supergroup. However, over 850 echinoid specimens have now been collected from these formations, from ‘lagoonal’, shelf edge and deeper water shelf palaeoenvironments. Cidaroids, spatangoids, cassiduloids and particularly oligopygoids are best known from shelf edge environments. Clypeasteroids are the most common echinoids in ‘lagoonal’ and deeper water shelf palaeoenvironments. The distributions of oligopygoids and clypeasteroids are almost mutually exclusive. The patchiness of the record precludes a detailed analysis of the pattern of echinoid extinction in Jamaica in the late Eocene.