In this contribution we describe and illustrate 14 coral morphospecies collected from the early Miocene Siamaná (Aquitanian-Burdigalian) and Jimol (late Burdigalian) formations of the Cocinetas Basin in La Guajira Peninsula, northern Colombia. Eleven were identified as already established species including seven genera belonging to the families Mussidae, Pocilloporidae, Poritidae, Siderastreidae, and Milleporidae; the other three remain in open nomenclature. Nine of the 11 species identified (81%) are extinct. The remaining two living species, Siderastrea siderea and Millepora alcicornis, are common on modern Caribbean reefs. Their presence in the Siamaná Formation extends their temporal range in the Caribbean region to the early Miocene. Most of the taxa described here were hermatypic and zooxanthellate corals of the order Scleractinia, with the exception of the fire coral Millepora alcicornis, of the order Anthothecata, family Milleporidae. The coral fauna recorded in the Siamaná and Jimol formations is typical of shallow and calm waters of the Oligocene-Miocene transition.
|Number of pages||21|
|Journal||Journal of Paleontology|
|State||Published - 1 May 2019|
Bibliographical noteFunding Information:
Financial support of this research was provided by grants from Colciencias, project code 7277-569-33195. PF is supported by the scholarship 'Doctorados en el Exterior 2015-Colciencias'. We acknowledge the additional financial support of Ecopetrol S.A., Smithsonian Tropical Research Institute, University of Zurich, Universidad del Norte, Universidad de Granada, NSF (Grant EAR 0957679), National Geographic Society, Anders Foundation, 1923 Fund, and G.D. and J.Walston Johnson. Special thanks to J.C. Braga, C. Jaramillo, and the anonymous reviewers. Thanks to A. Budd for sharing the species distribution information with us, I. Sanchez for her help with the SEM image acquisition, and S. Montes for thin section preparations. We also thank the Wayúu community, ARES, V. Pretkovic', C. Montes, and their students for their help in the field.
© 2019 The Paleontological Society.