| References | 
            Amaral,A. do 1930. Estudos sobre ophidios neotropicos XVIII. Lista remissiva dos ophidios da região neotropica. Mem. Inst. Butantan 4: 126-271 [1929]  - get paper hereBarragán-Reséndiz, Lesly Montserrat, Pavón-Vázquez, Carlos J., Cervantes-Burgos, Romina Itzel, Trujano-Ortega, Marysol, Canseco-Márquez, Luis, et al. 2022. A New Species of Snake of the Geophis sieboldi Group (Squamata: Dipsadidae) from Estado de México, Mexico. Herpetologica 78 (4): 268-276  - get paper hereBoulenger, George A. 1894. Catalogue of the snakes in the British Museum (Natural History). Volume II., Containing the Conclusion of the Colubridæ Aglyphæ. British Mus. (Nat. Hist.), London, xi, 382 pp.  - get paper hereCarmona-Torres, Fahd Henrry and Adriana J. González Hernández. 2014. Geographic Distribution: Geophis petersii (Peter's earth snake). Herpetological Review 45 (2): 285  - get paper hereDowns, F. L. 1967. lntrageneric relations among colubrid snakes of the genus Geophis Wagler. Misc. Publ. Mus. Zool. Univ. Michigan 131: 1-193.  - get paper hereDuellman, W.E. 1961. The amphibians and reptiles of Michoacan, Mexico. Univ. Kansas Publ. Mus. Nat. Hist. 15 (1) 148 pp.  - get paper hereHartweg, Norman 1959. A new colubrid snake of the genus Geophis from Michoacán. Occasional Papers of the Museum of Zoology, University of Michigan (601): 1-5  - get paper hereHeimes, P. 2016. Snakes of Mexico. Chimaira, Frankfurt, 572 pp Lemos-Espinal JA, Smith GR 2020. A conservation checklist of the amphibians and reptiles of Mexico City, with comparisons with adjoining states. ZooKeys 951: 109-131  - get paper hereLeyte-Manrique A, Mata-Silva V, Báez-Montes O, Fucsko LA, DeSantis DL, García-Padilla E, Rocha A, Johnson JD, Porras LW, Wilson LD. 2022. The herpetofauna of Guanajuato, Mexico: composition, distribution, and conservation status. Amphibian & Reptile Conservation 16(2) [General Section: 133–180 (e321)  - get paper hereLeyte-Manrique, Adrian; Christian Berriozabal-Islas, Vicente Mata-Silva, and Juan Pablo Morales-Castorena 2018. Herpetofaunal diversity in Área Natural Protegida Las Musas, Guanajuato, Mexico. Mesoamerican Herpetology 5 (1): 122–136  - get paper hereMuñoz-Nolasco, Francisco Javier; Daniel Cruz-Sáenz, Oscar Jair Rodríguez-Ruvalcaba and Isaac Enrique Terrones-Ferreiro 2015. Notes on the Herpetofauna of Western Mexico 12: Herpetofauna of a Temperate Forest in Mazamitla, Southeastern Jalisco, Mexico. Bull. Chicago Herp. Soc. 50 (4):45-50  - get paper herePalacios-Aguilar, Ricardo & OSCAR FLORES-VILLELA 2018. An updated checklist of the herpetofauna from Guerrero, Mexico. Zootaxa 4422 (1): 1-24  - get paper hereWallach, Van; Kenneth L. Williams , Jeff Boundy 2014. Snakes of the World: A Catalogue of Living and Extinct Species. [type catalogue] Taylor and Francis, CRC Press, 1237 pp. WILSON, L.D. & J.H. TOWNSEND 2007. A checklist and key to the snakes of the genus Geophis (Squamata: Colubridae: Dipsadinae), with commentary on distribution and conservation. Zootaxa 1395: 1-31  - get paper here |