Craspedida

Craspedida
Temporal range: 422.78–0 Ma
phase contrast image of Monosiga brevicollis
Scientific classification Edit this classification
Domain: Eukaryota
Supergroup: Amorphea
Clade: Obazoa
Clade: Opisthokonta
Clade: Holozoa
Class: Choanoflagellata
Order: Craspedida
Cavalier-Smith, 1997, emend. Nitsche et al. 2011
Families

Craspedida is an order of choanoflagellate, 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.

Subgroups

Cladogram

The following cladogram is based on the 2014 study by Leadbeater.

Choanoflagellata

References

  1. ↑ Carr, Martin; Leadbeater, Barry S. C. (2022-12-01). "Re-evaluating Loricate Choanoflagellate Phylogenetics: Molecular Evidence Points to the Paraphyly of Tectiform Species". Protist. 173 (6) 125924. doi:10.1016/j.protis.2022.125924. ISSN 1434-4610. PMID 36327744.
  2. ↑ Schiwitza, Sabine; Gutsche, Lennart; Freches, Eric; Arndt, Hartmut; Nitsche, Frank (2021-06-01). "Extended divergence estimates and species descriptions of new craspedid choanoflagellates from the Atacama Desert, Northern Chile". European Journal of Protistology. 79 125798. doi:10.1016/j.ejop.2021.125798. ISSN 0932-4739. PMID 33984646.
  3. ↑ Dohrmann, Martin; Wörheide, Gert (2017-06-15). "Dating early animal evolution using phylogenomic data". Scientific Reports. 7 (1): 3599. Bibcode:2017NatSR...7.3599D. doi:10.1038/s41598-017-03791-w. ISSN 2045-2322. PMC 5472626. PMID 28620233.
  4. ↑ Leadbeater BS (2015). The choanoflagellates: evolution, biology, and ecology. University of Birmingham. ISBN 978-0-521-88444-0.