Latitudinal range: 29.2° to 42.7°

Habitats: temperate savanna (2), temperate broadleaf/mixed forest (5), desert/xeric shrubland (1)

Found in 11 samples

Mexico: Mexico Highway 16

United States: Savannah River Site, Pine Bush, Fort Riley Military Reservation, Ellenton Bay, Needle's Eye, Curl Creek, Griffith League Ranch, Scovill (Holocene), Meyer Cave (Holocene), WaKeeney (UM-K6-59) (Late Miocene)

See also Heterodon nasicus, Heterodon platirhinos, Heterodon simus, Heterodon sp.