Gruae
| Gruae Temporal range: Late Cretaceous - Holocene, 75–0 Ma | |
|---|---|
 | |
| Hoatzin (Opisthocomus hoazin) | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Clade: | Passerea |
| Clade: | Gruae Bonaparte, 1854 |
| Subgroups | |
Gruae[1] is a clade of birds that contains the order Opisthocomiformes (hoatzin) and Gruimorphae (shorebirds and rails) identified in 2014 by genome analysis.[2] Previous studies have placed the Hoatzin in different parts of the bird family tree; however, despite its unusual and primitive morphology, genetic studies have shown the hoatzin is not as primitive or as ancient as once thought, and that it could be a very derived bird that reverted to or retains some plesiomorphic traits.[2][3][4]
See also
- Inopinaves for an alternative hypothesis on the placement of the Hoatzin
References
- ↑ http://www.jboyd.net/Taxo/List7.html
- 1 2 Jarvis, E.D. et al. (2014) Whole-genome analyses resolve early branches in the tree of life of modern birds. Science, 346(6215):1320-1331.
- ↑ Fain, Matthew G. & Houde, Peter (2004). "Parallel radiations in the primary clades of birds" (PDF). Evolution. 58 (11): 2558–2573. PMID 15612298. doi:10.1554/04-235. Archived from the original (PDF) on 2013-04-07.
- ↑ Hackett, S.J. et al. (2008) A Phylogenomic Study of Birds Reveals Their Evolutionary History. Science, 320(5884):1763–1768.
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