Toxicophis atrofuscus
Qonurbaş qalxansifət (lat. Agkistrodon contortrix) — gürzəkimilər fəsiləsinin agkistrodon cinsinə aid ilan növü.
== Sinonimləri ==
Boa contortrix Linnaeus, 1766
Scytale contortrix Sonnini & Latreille, 1801
Scytale Cupreus Rafinesque, 1818
Scytale cupreus Say, 1819
Tisiphone cuprea Fitzinger, 1826
Cenchris marmorata Boie, 1827
Acontias atrofuscus Troost, 1836
Toxicophis atrofuscus Troost, 1836
Trigonocephalus cenchris Schlegel, 1837
Trigonocephalus Contortrix Holbrook, 1838
Trigonocephalus atro-fuscus Holbrook, 1842
Cenchris contortrix Gray, 1842
Cenchris atrofuscus Gray, 1849
Agkistrodon contortrix Baird & Girard, 1853
Trigonocephalus histrionicus Duméril & Bibron, 1853
Ancistrodon contortrix Baird, 1854
Agkistrodon contorting Abbott, 1869
Ancistrodon atrofuscus Cope, 1875
Agkistrodon atrofuscus Yarrow, 1882
Ancistrodon contortrix var.