Heterodon nasicus

Taxonavigation

Taxonavigation: Colubroidea
Superregnum: Eukaryota Cladus: Podiata Cladus: Amorphea Cladus: Obazoa Cladus: Opisthokonta Cladus: Holozoa Cladus: Filozoa Cladus: Choanozoa Regnum: Animalia Subregnum: Eumetazoa Cladus: ParaHoxozoa Cladus: Bilateria Cladus: Nephrozoa Superphylum: Deuterostomia Phylum: Chordata Cladus: Olfactores Subphylum: Vertebrata Infraphylum: Gnathostomata Cladus: Eugnathostomata Cladus: Osteichthyes Cladus: Sarcopterygii Cladus: Rhipidistia Cladus: Tetrapodomorpha Cladus: Eotetrapodiformes Cladus: Elpistostegalia Cladus: Stegocephali Cladus: Tetrapoda Cladus: Reptiliomorpha Cladus: Amniota Cladus: Sauropsida Classis: Reptilia Cladus: Eureptilia Cladus: Romeriida Cladus: Diapsida Cladus: Neoreptilia Cladus: Parapleurota Cladus: Neodiapsida Cladus: Sauria Cladus: Lepidosauromorpha Superordo: Lepidosauria Ordo: Squamata Cladus: Toxicofera Subordo: Serpentes Cladus: Caenophidia Superfamilia: Colubroidea

Heterodon nasicus Baird & Girard, 1852: 70

Neotype: USNM 1249, ♀, collected by A.C.V. Schott (U.S.-Mex. Boundary Survey) between 1852–1853. [designated by Webb & Eckerman (1998: 104)]
Type locality: “Eagle Pass, Texas, USA” via neotype designation, restricted to “Río Grande approximately 4.3 air miles (7 km) southwest El Indio or approximately 19 air miles (30.6 km) downstream from Eagle Pass, Maverick County, Texas” by Webb & Eckerman (1998: 102).

Baird, S.F. & Girard, C. 1852. Characteristics of some new reptiles in the Museum of the Smithsonian Institution. First Part. Proceedings of the Academy of Natural Sciences of Philadelphia 6: 68–70. BHL Reference page.

Hammerson, G.A. 2007. IUCN: Heterodon nasicus (Least Concern). The IUCN Red List of Threatened Species 2007: e.T63819A12718545. DOI: 10.2305/IUCN.UK.2007.RLTS.T63819A12718545.en. Accessed on 20 June 2026.