Jamaica has a rich invertebrate fossil record. The principal localities for fossil decapod crustaceans are Upper Cretaceous (two sites), Paleocene (one site), Eocene (four sites), Miocene (one site), Pliocene (one site) and Pleistocene (six sites); there are no Oligocene localities. Few taxa and specimens are known from the Upper Cretaceous and Paleogene, but this is interpreted, in part, as collection failure. Neogene localities have produced much more diverse faunas, but the only site to yield moderately common and diverse carapace remains is Lower Miocene.