Order: Pansomonadida Vickerman, 2005 (original paper)
[Latin pandere (gerundive pansum) to spread, flow out, from behaviour of amoeboid phase]
Heterotrophic flagellates with two heterodynamic flagella, both flagella free from body. Motile flagellate phase alternates with sedentary amoeboid phase. One amino acid insertion only between ubiquitin monomers. Clade includes last common ancestor of A. solis and C. agilis.