The Aymamón Limestone is a geologic formation in Puerto Rico. It preserves fossils dating back to the Middle to Late Miocene period.Aymamón Limestone at Fossilworks.org
Fossil content Various fossils have been found in the Aymamón Limestone:Rio Guajataca Section at Fossilworks.org
Sharks MegalodonIsabela Municipal Landfill at Fossilworks.org
Bivalves
Acar domingensis Arca imbricata Mimachlamys canalis
Gastropods
Bulla umbilicata Chicoreus (Triplex) cornurectus Hindsiclava consors Orthaulax aguadillensis Orthaulax portoricoensis Vokesimurex messorius
Corals
Agaricia sp. Favia sp. Goniopora sp. Meandrina (Placocyathus) sp. Montastraea sp. Porites sp. Siderastrea sp. Solenastrea sp. Stephanocoenia sp. Stylophora sp.
See also List of fossiliferous stratigraphic units in Puerto Rico
References
Further reading E. N. Edinger and M. J. Risk. 1994. Oligocene-Miocene extinction and geographic restriction od Caribbean corals: Roles of turbidity, temperature, and nutrients. Palaios 9:576-598 A. M. Nieves Rivera, A. C. Ruiz Yantin, and M. D. Gottfried. 2003. New Record of the Lamnid Shark Carcharodon megalodon from the Middle Miocene of Puerto Rico. Caribbean Journal of Science 39(2):223-227 H. E. Vokes and E. H. Vokes. 1968. Variation in the genus Orthaulax (Mollusca: Gastropoda). Tulane Studies in Geology and Paleontology 6(2):71-84