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Rhizothera
Long-billed partridge (Rhizothera longirostris)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Galliformes
Superfamily:	Phasianoidea
Family:	Phasianidae
Subfamily:	Phasianinae
Genus:	Rhizothera G.R. Gray, 1841
Type species
Perdix longirostris
Species
Rhizothera longirostris Rhizothera dulitensis

Rhizothera is a bird genus in the family Phasianidae, native to Malaysia and Indonesia. They are the only genus in the tribe Rhizotherini. Established by George Robert Gray in 1841, it contains the following species:

• Long-billed partridge (Rhizothera longirostris)
• Dulit partridge (Rhizothera dulitensis)

The name Rhizothera is constructed of two Greek words: rhiza, meaning "root" and thēras, meaning "hunter".

Although their taxonomic relationships were formerly a mystery, with some taxonomists placing them with the more basal genera such as Arborophila and Xenoperdix that were formerly classified within the paraphyletic "Perdicinae" (this basal group is now known as Rollulinae), more recent phylogenetic studies place them as the sister group to the tribe Phasianini, which contains many well-known and widespread genera such as Perdix and Phasianus.

References

1. ^ Kimball, Rebecca T.; Hosner, Peter A.; Braun, Edward L. (2021-05-01). "A phylogenomic supermatrix of Galliformes (Landfowl) reveals biased branch lengths". Molecular Phylogenetics and Evolution. 158: 107091. Bibcode:2021MolPE.15807091K. doi:10.1016/j.ympev.2021.107091. ISSN 1055-7903. PMID 33545275. S2CID 231963063.
2. ^ "Galliformes". bird-phylogeny (in German). Retrieved 2021-08-01.
3. "Taxonomic Updates – IOC World Bird List". Retrieved 2021-08-01.
4. "ITIS Report: Rhizothera". Integrated Taxonomic Information System. Retrieved 16 November 2014.
5. Jobling, James A. (2010). The Helm Dictionary of Scientific Names. London, UK: Christopher Helm. p. 334. ISBN 978-1-4081-2501-4.

v t e Genera of landfowl and their extinct allies
Kingdom: Animalia Phylum: Chordata Class: Aves Superorder: Galloanserae Clade: Pangalliformes
Pangalliformes incertae sedis †Anisolornis? †Archaeophasianus? †Argillipes? †Austinornis? †Chambiortyx †Coturnipes? †"Gigantibis"? †Litoripes? †Percolinus? †Tegulavis? †Gallinuloididae Gallinuloides Paraortygoides †Paraortygidae Paraortyx Pirortyx Scopelortyx Xorazmortyx †Quercymegapodiidae Ameripodius Quercymegapodius Taubacrex †Sylviornithidae Megavitiornis Sylviornis Galliformes See below ↓
Galliformes Galliformes †Amitabha †Bumbanipodius †Bumbanortyx †Linquornis †Namaortyx †Palaeoalectoris †Procrax †Sobniogallus †Taoperdix Megapodiidae †Garrdimalga? †Mwalau †Ngawupodius Alecturini Aepypodius Alectura †Latagallina Leipoa †Progura Talegalla Megapodiini Eulipoa Macrocephalon Megapodius Cracidae †Archaealectrornis †Boreortalis †Palaeonossax †Procrax Penelopinae Aburria Chamaepetes Penelope Penelopina Pipile Cracinae Oreophasis Ortalis Cracini Crax Mitu Nothocrax Pauxi Phasianoidea See below ↓
Phasianoidea Numididae Acryllium Agelastes Guttera Numida †Telecrex Odontophoridae †Miortyx †Nanortyx †Neortyx Ptilopachinae Ptilopachus Odontophorinae Callipepla Colinus Cyrtonyx Dactylortyx Dendrortyx Odontophorus Oreortyx Philortyx Rhynchortyx Phasianidae See below ↓
Phasianidae Phasianidae †Bantamyx †Centuriavis †Diangallus †Eurobambusicola †Lophogallus †Megalocoturnix †Miogallus †Mioryaba †Palaeocryptonyx †Palaeortyx †Panraogallus †Pliogallus †Plioperdix †Rustaviornis †Schaubortyx †Shandongornis †Shanxiornis †Titanoperdix †Tologuica Rollulinae Arborophila Caloperdix Melanoperdix Rhizothera Rollulus Xenoperdix Pavoninae Tropicoperdix Coturnicini Alectoris Ammoperdix Coturnix Margaroperdix †?Ophrysia Perdicula Pternistis Synoicus Tetraogallus Gallini Bambusicola Campocolinus Francolinus Gallus Ortygornis Peliperdix Scleroptila Pavonini Afropavo Argusianus Pavo Rheinardia Polyplectronini Galloperdix Haematortyx Polyplectron Phasianinae †Chauvireria Ithaginis Lerwa Lophophorini Lophophorus Tetraophasis Tragopan Phasianini Catreus Chrysolophus Crossoptilon Lophura Perdix Phasianus Syrmaticus Tetraonini Bonasa Canachites Centrocercus Dendragapus Falcipennis Lagopus Lyrurus Meleagris †Palaealectoris †Proagriocharis Pucrasia †Rhegminornis Tetrao Tetrastes Tympanuchus

• Rhizothera
• Bird genera
• Taxa named by George Robert Gray