Craspedida is an order of
choanoflagellate
Choanoflagellates are a group of free-living unicellular and colonial flagellate eukaryotes considered to be the closest living relatives of animals. The name refers to the characteristic funnel-shaped "collar" of interconnected microvilli and ...
, with members with an exclusively organic covering. Crown group craspedids (and perhaps crown group choanoflagellates if Acanthoecida arose within Craspedida) appeared 422.78 million years ago. Although a previous study from 2017 recovered the divergence of the crown group choanoflagellates (craspedids) at 786.62 million years.
Craspedid genera
''Codonosiga''
''Proterospongia''
''Salpingoeca''
''
Salpingoeca rosetta'' has been named for the rosette-shaped colonies formed by its cells. Recent studies show a bacterial sulfonolipid, called rosette inducing factor (RIF-1) produced by ''
Algoriphagus machipongonensis'' triggers colony formation in ''S. rosetta''.
References
* Extended phylogeny of the Craspedida (Choanomonada). Alexandra Jeuck, Hartmut Arndt and Frank Nitsche, European Journal of Protistology, Volume 50, Issue 4, August 2014, Pages 430–443,
External links
*
Craspedida''at the World Register of Marine Species (WoRMS)
Opisthokont orders
{{Holozoa-stub