Sonora occipitalis

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Sonora occipitalis


Taxonavigation: Colubroidea 

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: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Cladus: Unidentata, Episquamata
Cladus: Toxicofera
Subordo: Serpentes
Infraordo: Caenophidia
Superfamilia: Colubroidea

Familia: Colubridae
Subfamilia: Colubrinae
Genus: Sonora
Species: Sonora occipitalis



Sonora occipitalis (Hallowell, 1854)

  • Holotype: USNM 8030.
  • Type locality: “Mohave Desert”.


  • Rhinostoma occipitale Hallowell, 1854: 95 [original combination]
  • Lamprosoma occipitaleHallowell, 1856: 311 [subsequent combination]
  • Chionactis occipitaleCope, 1860: 241 [subsequent combination]
  • Chionactis occipitulisCooper, 1870: 66 [subsequent combination]
  • Holasoma occipitaleMüller, 1882: 125 [subsequent combination]
  • Contia occipitalisGarman, 1884: 91 [subsequent combination]
  • Sonora occipitalisDenburgh & Slevin, 1913: 412 [subsequent combination]


  • Chionactis occipitalis talpina Klauber, 1951: 172 [synonymised by Wood, Fisher & Vandergast (2014: 10)]
    • Holotype: CAS 81364, adult ♂, collected by Joseph R. Slevin and Wallace Wood on 3 June 1947.
    • Type locality: “50 miles south of Goldfield on the highway to Beatty, in Nye County, Nevada”.
  • Chionactis saxatilis Funk, 1967: 180
    • Holotype: MCZ 77039, adult ♂, collected by R.S. Funk in 13 August 1961.
    • Type locality: “Gila Mountains, Yuma Co., Ariz., ca. 2.5 air miles northeast (in T. 10S.. R.20W) of Fortuna Mine at an elevation of ca. 2300 feet above sea level”.



Primary references


Additional references


Vernacular names

English: Western Shovel-nose Snake
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