
Belongs within: Coraciimorphae.
Contains: Galbulae, Pici.
The Piciformes are a group of birds characterised by the possession of a zygodactylous foot with both the first and fourth toes directed backwards. Living species are divided between the Galbulae, including jacamars (Galbulidae) and puffbirds (Bucconidae), and the Pici, including barbets and toucans (Capitonoidea), honeyguides (Indicatoridae) and woodpeckers (Picidae).
The Sylphornithidae are tiny, long-legged birds from the Eocene and Oligocene of Europe that have been identified as possible stem-Piciformes. Unlike in modern Piciformes, the foot appears to have been only facultatively zygodactylous. The tarsometatarsus was extraordinarily long and slender with a very wide distal end bearing short trochleae (Mayr 2009). Another possible family of stem-Piciformes is the Gracilitarsidae, small birds from the Paleogene of Europe and the Americas (Mayr 2009).
Synapomorphies (Mayr 2005): Coracoid with distinct notch on medial side of extremitas sternalis; humerus with far ventrodistally extending, large fossa musculi brachialis situated on far medial side of bone, with weakly developed ventral margin; carpometacarpus with well-developed processus intermetacarpalis fused with os metacarpale minus; trochlea metatarsi IV with plantarly projecting wing-like flange; hypotarsus of tarsometatarsus with tendon of musculus flexor hallucis longus situated in marked sulcus medially bordered by prominent crista lateralis hypotarsi.
<==Piciformes
|--+--GalbulaeM04
| `--PiciM04
|--SylphornithidaeM04
| |--Oligosylphe mourerchauvireae Mayr & Smith 2002M09
| |--Sylphornis Mourer-Chauviré 1988M02
| | `--*S. bretouensis Mourer-Chauviré 1988M02
| `--Palaegithalus Milne-Edwards 1871M09, M02 [Palaegithalidae]
| `--*P. cuvieri (Gervais 1848-1852) [=Sitta cuvieri]M02
`--GracilitarsidaeM05
|--Gracilitarsus Mayr 1998M01
| `--*G. mirabilis Mayr 1998M01
|--Eutreptodactylus Baird & Vickers-Rich 1997M05
| `--E. itaboraiensis Baird & Vickers-Rich 1997M01
`--NeanisM09
|--N. kistneri Feduccia 1973M09
`--N. schucherti (Shufeldt 1913)M09 [=Hebe schuchertiRC02]
Trachyphonus margaritatus (Cretzschmar 1828) [=Bucco margaritatus, Micropogon margaritatus]S05
*Type species of generic name indicated
References
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[M01] Mayr, G. 2001. A new specimen of the tiny Middle Eocene bird Gracilitarsus mirabilis (new family: Gracilitarsidae). Condor 103 (1): 78–84.
[M04] Mayr, G. 2004. The phylogenetic relationships of the early Tertiary Primoscenidae and Sylphornithidae and the sister taxon of crown group piciform birds. Journal of Ornithology 145: 188–198.
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