Temporal range: Late Cretaceous–Recent
Hoatzin (Opisthocomus hoazin) and Telluraves.
Scientific classification Red Pencil Icon
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Superorder: Neoaves
Clade: Inopinaves
Prum et al., 2015

Inopinaves is a clade of neoavian birds recovered in a compressive genomic systematic study using nearly 200 species in 2015; it contains the clades Opisthocomiformes (Hoatzin) and Telluraves (core landbirds); the study shows that the Hoatzin diverge from other birds 64 million years ago.[1] Previous studies have placed the Hoatzin in different parts of the bird family tree, though these studies seem to support that it is a very derived bird that reverted to or retains some plesiomorphic traits, but is an ancient species as previously thought.[2][3][4]

See also

  • Gruae for an alternative hypothesis on the placement of the Hoatzin


  1. ^ Prum, R. O. et al. A comprehensive phylogeny of birds (Aves) using targeted next-generation DNA sequencing. Nature (2015). doi:10.1038/nature15697
  2. ^ 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. Retrieved 2016-07-08. 
  3. ^ Hackett, S.J. et al. (2008) A Phylogenomic Study of Birds Reveals Their Evolutionary History. Science, 320(5884):1763–1768.
  4. ^ 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.
Hemipus picatus This article is part of Project Bird Taxonomy, a All Birds project that aims to write comprehensive articles on every order, family and other taxonomic rank related to birds.

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