Codonosigidae were a

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 ...

family. In the newest taxonomy the family Codonsigidae is replaced by the Salpingoecidae.

References

Opisthokont families Choanoflagellate families {{Holozoa-stub