Fossil specimen of the barnacle *Chesaconcavus* sp. from the Pliocene Tamiami Fm. of Sarasota County, Florida (PRI 44660). Specimen is from the collections of the [Paleontological Research Institution](http://www.priweb.org), Ithaca, New York. Longest dimension of specimen is approxiately 16 cm. Model by Emily Hauf.