BioStor
GBIF occurrence 81935489 from dataset Vertebrate specimens (Los Angeles County Museum of Natural History)
Masticophis flagellum piceus (Animalia:Reptilia:Colubridae)
 | The amphibians and reptiles of Sinaloa, Mexico L M Hardy and And R W Mcdiarmid (1969) University of Kansas Publications. Museum of Natural History 18: 39-252 |
 | The coachwhip snake Masticophis flagellum (Shaw): taxonomy and distribution Larry David Wilson (1971) Tulane Studies in Zoology and Botany 16(2): 31-99 |