Colponemid

Colponemids
SEM image of Colponema vietnamica showing anterior (af) and posterior (pf) flagella, and an acroneme (an).
Scientific classification
Domain: Eukaryota
Clade: Diaphoretickes
Clade: Sar
Clade: Alveolata
Phylum: incertae sedis
Order: Colponemida
Cavalier-Smith 1993 emend. Adl et al. 2019
Groups included
  • Acavomonas
  • Colponema
  • Loeffela
  • Neocolponema
  • Palustrimonas
Cladistically included but traditionally excluded taxa
Synonyms
  • Protalveolata Cavalier-Smith 1991 emend. 2017

Colponemids are free-living alveolates, unicellular flagellates related to dinoflagellates, apicomplexans and ciliates. They are predators of other small eukaryotes, found in freshwater, marine and soil environments. They do not form a solid clade, but a sparse group of deep-branching alveolate lineages.