| Aymamón Limestone | |
|---|---|
| Stratigraphic range: Mid-to-Late Miocene ~16.0–5.3 Ma PreꞒ Ꞓ O S D C P T J K Pg N | |
| Type | Formation |
| Lithology | |
| Primary | Limestone |
| Other | Chalk |
| Location | |
| Coordinates | 18°30′N 67°00′W / 18.5°N 67.0°W / 18.5; -67.0 |
| Approximate paleocoordinates | 18°24′N 66°00′W / 18.4°N 66.0°W / 18.4; -66.0 |
| Region | Caribbean |
| Country | Puerto Rico |
  Aymamón Limestone (Puerto Rico) | |
The Aymamón Limestone is a geologic formation in Puerto Rico. It preserves fossils dating back to the Middle to Late Miocene period.
Fossil content
Various fossils have been found in the Aymamón Limestone:
Sharks
Bivalves
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
References
- Aymamón Limestone at Fossilworks.org
- Rio Guajataca Section at Fossilworks.org
- Isabela Municipal Landfill at Fossilworks.org
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