- Hemiauchenia macrocephala
- Pleistocene Age
- River Find
- Marion County, Florida
- Specimen measures approx. 1 3/8″ long
Hemiauchenia, synonym Tanupolama, is a genus of lamine camelids that evolved in North America in the Miocene period approximately 10 million years ago. This genus diversified and moved to South America in the Early Pleistocene, as part of the Great American Biotic Interchange, giving rise to modern lamines. The genus became extinct at the end of the Pleistocene.