Montbrook – Florida Vertebrate Fossils https://www.floridamuseum.ufl.edu/florida-vertebrate-fossils/sites/montbrook/
epochs; late Hemphillian (Hemphillian 4 interval) land mammal age About 5.5 to 5 million
epochs; late Hemphillian (Hemphillian 4 interval) land mammal age About 5.5 to 5 million