Craspedida

Craspedida is an order of choanoflagellate, with members with an exclusively organic covering. Crown group craspedids appeared 422.78 million years ago. Although a previous study from 2017 recovered the divergence of the crown group choanoflagellates 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 produced by Algoriphagus machipongonensis triggers colony formation in S. rosetta.