Donovan, S.K.; Dixon, H.L.; Littlewood, D.T.; Milsom, C.V.; Norman, Y.J.
Author Affiliation, Ana.
Geography and Geology; Faculty of Pure and Applied Sciences
The clypeasteroid echinoid Encope homala Arnold and Clark, 1934, in the Cenozoic of Jamaica
Caribbean Journal of Science
Date of Publication
The original description of the fossil sand dollar (Echinoidea: Clypeasteroida) Encope homala Arnold and Clark from Jamaica included no stratigraphic data and only localized the holotype to the parish of Manchester. This species is now recognized to have come from the Round Hill beds of Mio-Pliocene or Plio-Pleistocene age, August Town Formation, Lower Coastal Group, exposed on the coast 1km east of Alligator Pond. This is nominated as the type locality. This accumulation of E. homalais apparently allochthonous, with at least parautochthonous occurrences further east in limestone of possible lagoonal origin at Round Hill, parish of Clarendon. Post-mortem crushing and breakage, the latter probably during collection, give the holotype an atypically rounded, flattened appearance. Encope homalais redescribed on the basis of the holotype and other specimens.....