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unikont

n. (context biology English) A eukaryotic cell with a single flagellum; thought to be the ancestor of all animals

Wikipedia
Unikont

Unikonts or Amorphea are members of a taxonomic supergroup that includes the Amoebozoa and its sister clade, the Opisthokonta, which includes the Fungi, Animals and the Choanomonada, or Choanoflagellates. The taxonomic affinities of the members of this clade were originally described and proposed by Thomas Cavalier-Smith.

The International Society of Protistologists, the recognised body for taxonomy of protozoa, recommended in 2012 that the term Unikont be changed to Amorphea because the name "Unikont" is based on a hypothesized synapomorphy that the ISP authors and other scientists later rejected.

It includes amoebozoa, opisthokonts, and possibly Apusozoa.