Polychaos_dubium
Polychaos dubium
A freshwater amoeboid
Polychaos dubium is a freshwater amoeboid and one of the larger species of single-celled eukaryote. Like other amoebozoans, P. dubium moves by means of temporary projections called pseudopods. P. dubium reportedly has one of the largest genome size of any organism known,[3] though the authors of a 2004 study suggest treating that measurement with caution.[4]
Polychaos dubium was previously known as Amoeba dubia.[2] The author who named the species later recognized it as different from species of Amoeba, and so designated it the type species of the genus Polychaos.[1] Unlike species of Amoeba, P. dubium lacks longitudinal ridges on its pseudopods.[5]