Choanoflagellate facts for kids

Quick facts for kids Choanoflagellates Temporal range: 900–0Ma Had'n Archean Proterozoic Pha. No fossils known, molecular clock evidence for origin 1050-800Ma

Codosiga sp.
Scientific classification
(unranked):	Obazoa
(unranked):	Opisthokonta
(unranked):	Holozoa
(unranked):	Filozoa
(unranked):	Choanozoa
Class:	Choanoflagellatea Cavalier-Smith, 1998
Orders & families
Craspedida Codonosigidae (incl. Salpingoecidae) Acanthoecida Stephanoecidae Acanthoecidae
Synonyms
Craspedmonadina Stein, 1878 Choanoflagellata Kent, 1880 Craspedomonadaceae Senn, 1900 Craspedophyceae Chadefaud, 1960 Craspédomonadophycidées Bourrelly, 1968 Craspedomonadophyceae Hibberd, 1976 Choanomonadea Krylov et al., 1980 Choanoflagellida Levine et al., 1980, Lee et al., 1985 Choanoflagellea Cavalier-Smith, 1997 Choanomonada Adl et al. 2005

Sphaeroeca, a colony of choanoflagellates (about 230 individuals)

The choanoflagellates are a class or phylum of collared microscopic flagellate eukaryotes. Some species are single cells, some are multicellular. They do not have chloroplasts, and are heterotrophic. Some consider they form the simplest phylum of animals; others consider them to be protists.

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