The Bicoecea are a small number of poorly studied unicells. Some of these have been known for more than a century, while others have only recently been described. One of the more exciting recent discoveries is the species Cafeteria roenbergensis. This species is actually quite common, and feeds indiscriminately on whatever it can find (and hence its name). The taxonomy is unclear with different treatments according to author. Some group the Bicoecea and Labyrinthulomycota as the Sagenista.