Fossil Friday 4/29/16: A white cockle

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UF 208535, a valve of  Apiocardia n. sp. Photo © IVP FLMNH.

This week’s Fossil Friday post focuses on a white cockle of the genus Apiocardia. This bivalve specimen was collected from the Gatún Formation and is Late Miocene in age. This species was endemic to the Caribbean side of Panama.

To learn more about this species, visit the “Fossils of Panama” page on it here.

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Fossil Friday 4/22/16: A New World Monkey

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UF 280128, the left upper first molar (M1) and holotype of Panamacebus transitus. Photo courtesy of Aldo Rincon, VP FLMNH and PCP PIRE.

This week’s Fossil Friday (and Earth Day) feature highlights an important new discovery that was just published in the journal Nature this week. Seven fossil teeth of a platyrrhine, or New World Monkey, named Panamacebus transitus were found at the Lirio Norte locality of Las Cascadas, and these teeth are the first known evidence of New World Monkeys in North America. The discovery of the teeth has also rewritten the history of mammalian dispersals from South America to North America, as they are the oldest record of a mammal dispersing from South America to North America with an age of 20.93 ± 0.17 Ma.

To learn more about this key discovery, read the publication on it here.

Reference:

Bloch, J. I., Woodruff, E. D., Wood, A. R., Rincon, A. F., Harrington, A. R., Morgan, G. S., Foster, D. A., Montes, C., Jaramillo, C. A., Jud, N. A., Jones, D. S., and MacFadden, B. J. 2016. First North American Fossil Monkey and Early Miocene Tropical Biotic Interchange. Nature. doi:10.1038/nature17415

Fossil Friday 4/8/16: An artiodactyl tibia

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UF 243751, an artiodactyl tibia. Photo © VP FLMNH.

For this week’s Fossil Friday post I present an artiodactyl tibia, perhaps one of a peccary (Family Tayassuidae) or a protoceratid (Family Protoceratidae). The curvature and the morphology of the end that articulates with the astragalus along with other features strongly suggests it belongs to an artiodactyl, however it was not found in association with other elements, like teeth, that could pinpoint an identification. This specimen was found in the upper Culebra Formation and is early Miocene in age.

To learn more about this specimen, read its description in the paper referenced below on peccaries found in Panama.

Reference:

MacFadden, B.J., Kirby, M.X., Rincon, A., Montes, C., Moron, S., Strong, N., and Jaramillo, C. 2010. Extinct Peccary “Cynorca” occidentale (Tayassuidae) from the Miocene of Panama and Correlations to North America. Journal of Vertebrate Paleontology 84: 288-298. doi: 10.1666/09-064R.1