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Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Eusaurischia
Subordo: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Euavialae
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Ornithuromorpha
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Neoaves
Cladus: Telluraves
Cladus: Australaves
Ordo: Passeriformes
Subordo: Passeri
Infraordo: Passerida
Superfamilia: Passeroidea

Familia: Passerellidae
Genus: Spizella
Species: S. atrogularis – S. breweri – S. pallida – S. passerina – S. pusilla – S. wortheni
Name

Spizella Bonaparte, 1832

Typus: Fringilla pusilla A. Wilson, 1810 = Spizella pusilla

Synonyms

Spinites Cabanis, 1851 Mus.Hein p. 133 BHL

References

Bonaparte, C.L. 1831. Saggio di una distribuzione metodica degli Animali Vertebrati a sangue freddo. Giornale Arcadico di Scienze Lettere ed Arti 52 (October, November, December): 129–209. BHL Amphibia & Reptilia: 130–154; Pisces: 155–189. Aggiunte e correzione relativa agli animale vertebrati a sangue caldo. Mammalia: 190–198; Aves: 199–209. Reference page. p. 205 BHL

Vernacular names
suomi: Sirkkulit

The genus Spizella is a group of American sparrows in the family Passerellidae.[1]

These birds are fairly small and slim, with short bills, round heads and long wings. They are usually found in semi-open areas, and outside of the nesting season they often forage in small mixed flocks.[1]
Systematics

This genus was formerly placed with the Old World buntings in the family Emberizidae.[1] However, genetic studies revealed that New World sparrows formed a distinct clade and thus it was placed in the resurrected family Passerellidae.[2][3]
Species

Chipping sparrow, Spizella passerina
Clay-colored sparrow, Spizella pallida
Brewer's sparrow, Spizella breweri
Timberline sparrow, Spizella breweri taverneri
Field sparrow, Spizella pusilla
Worthen's sparrow, Spizella wortheni
Black-chinned sparrow, Spizella atrogularis

The American tree sparrow, Spizelloides arborea, was formerly a member of this group, but is now placed in its own monotypic genus Spizelloides.[1]
References

Slager, David L.; Klicka, John (2014). "A new genus for the American Tree Sparrow (Aves: Passeriformes: Passerellidae)" (PDF). Zootaxa. 3821 (3): 398–400. doi:10.11646/zootaxa.3821.3.9. Retrieved 13 November 2019.
Barker, F.K.; Burns, K.J.; Klicka, J.; Lanyon, S.M.; Lovette, I.J. (2013). "Going to extremes: contrasting rates of diversification in a recent radiation of New World passerine birds". Systematic Biology. 62 (2): 298–320. doi:10.1093/sysbio/sys094. PMID 23229025.
Barker, F.K.; Burns, K.J.; Klicka, J.; Lanyon, S.M.; Lovette, I.J. (2015). "New insights into New World biogeography: An integrated view from the phylogeny of blackbirds, cardinals, sparrows, tanagers, warblers, and allies". Auk. 132 (2): 333–346. doi:10.1642/AUK-14-110.1.

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