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= endemic EX = extinct or assumed extinct

Genus
Boa (Red-tailed Boas) |
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Boa imperator
Central American Red-tailed Boa | 
Farr, Lavin Murcio & Lazcano 2007 [as B. constrictor]
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Lemos-Espinal & Smith 2007
Smith & Darling 1952
Smith & Taylor 1945
Stimson 1969
Teran-Juarez, Garcia-Padilla, Leyto-Delgado & Garcia-Morales 2015
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Genus
Adelphicos (Central American Burrowing Snakes) |
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Genus
Coluber (North American Racer) |
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Coluber constrictor
North American Racer | 
Auth, Smith, Brown & Lintz 2000
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
Wilson 1978
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Coniophanes imperialis
Regal Black-striped Snake | 
Auth, Smith, Brown & Lintz 2000
Fouquette & Rossman 1963
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Drymarchon melanurus
Black-tailed Cribo | 
Auth, Smith, Brown & Lintz 2000
Contreras-Lozano, Lazcano, Garcia-Salas & Contreras-Balderas 2013
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958 [as corais]
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Drymobius margaritiferus
Speckled Racer | 
Auth, Smith, Brown & Lintz 2000
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Genus
Ficimia (Eastern Hook-nosed Snakes) |
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Ficimia streckeri
Tamaulipan Hook-nosed Snake | 
Auth, Smith, Brown & Lintz 2000
Hardy 1975
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Liner 1964
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Genus
Geophis (Central American Earth Snakes) |
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Genus
Heterodon (North American Hognose Snakes) |
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Genus
Imantodes (American Blunt-headed Tree Snakes) |
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Imantodes cenchoa
Common Blunt-headed Tree Snake | 
Farr, Lazcano & Lavin-Murcio 2013
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1955
Martin 1958
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
Torres-Carvajal, Yanez-Munoz, Quirola, Smith & Almendariz 2012
Zweifel 1959
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Lampropeltis annulata
Tamaulipan Milk Snake | 
Auth, Smith, Brown & Lintz 2000
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Markel 1990
Ruane, Bryson, Pyron & Burbrink 2014
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Leptodeira maculata
Mexican Cat-eyed Snake | 
Arechaga-Ocampo, Montalban-Huidobro & Castro-Franco 2008 [as annulata cussiliris]
Auth, Smith, Brown & Lintz 2000 [as annulata cussiliris]
Barrio-Amoros 2019
Duellman 1958 [as annulata cussiliris]
Farr, Lazcano & Lavin-Murcio 2013
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009 [as annulata cussiliris]
Martin 1958
Smith & Darling 1952
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Leptodeira septentrionalis
Northern Cat-eyed Snake | 
Auth, Smith, Brown & Lintz 2000
Barrio-Amoros 2019
Duellman 1958
Farr, Lazcano & Lavin-Murcio 2013
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Genus
Masticophis (North American Whip Snakes and Coachwhips) |
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Masticophis flagellum
Common Coachwhip | 
Auth, Smith, Brown & Lintz 2000
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Genus
Nerodia (North American Water Snakes) |
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Nerodia rhombifer
Diamondback Water Snake | 
Auth, Smith, Brown & Lintz 2000
Conant 1969
Gibbons & Dorcas 2004
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Genus
Opheodrys (North American Green Snakes) |
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Genus
Oxybelis (Neotropical Vine Snakes) |
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Oxybelis potosiensis
Gulf Coast Vine Snake | 
Auth, Smith, Brown & Lintz 2000 [as aeneus]
Farr, Lazcano & Lavin-Murcio 2013 [as aeneus]
Heimes 2016 [as aeneus]
Jadin, Blair, Orlofske, Jowers, Rivas, Vitt, Ray, Smith & Murphy 2020
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009 [as aeneus]
Martin 1958 [as aeneus]
Smith & Taylor 1945 [as acuminatus]
Teran-Juarez, Garcia-Padilla, Leyto-Delgado & Garcia-Morales 2015 [as aeneus]
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016 [as aeneus]
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Pantherophis emoryi
Great Plains Rat Snake | 
Auth, Smith, Brown & Lintz 2000
Contreras-Lozano, Lazcano, Garcia-Salas & Contreras-Balderas 2013
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958 [as guttatus]
Smith & Darling 1952
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Genus
Pituophis (Bullsnakes, Pine Snakes and Gopher Snakes) |
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Pituophis catenifer
Gopher Snake | 
Auth, Smith, Brown & Lintz 2000
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Schatti, Heimes, Tillack, Kucharzewski & Coeto 2020
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Pseudelaphe flavirufa
Mexican Rat Snake | 
Auth, Smith, Brown & Lintz 2000
Dowling 1952
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958
Ramirez-Bautista, Flores-Villela & Casas-Andreu 1982
Schulz 1996
Smith & Darling 1952
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Genus
Sonora (North American Ground, Sand, and Shovel-nosed Snakes) |
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Spilotes pullatus
Chicken Snake | 
Auth, Smith, Brown & Lintz 2000
Farr, Lazcano & Lavin-Murcio 2013
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958
Ramirez-Bautista, Flores-Villela & Casas-Andreu 1982
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Genus
Storeria (North American Brown Snakes) |
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Storeria dekayi
Common Brown Snake | 
Auth, Smith, Brown & Lintz 2000
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Genus
Tantilla (American Centipede Snakes) |
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Genus
Thamnophis (North American Garter Snakes and Ribbon Snakes) |
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Thamnophis marcianus
Checkered Garter Snake | 
Auth, Smith, Brown & Lintz 2000
Heimes 2016
Klein 1958
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Thamnophis proximus
Western Ribbon Snake | 
Auth, Smith, Brown & Lintz 2000
Contreras-Lozano, Lazcano, Garcia-Salas & Contreras-Balderas 2013
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Liner 1964
Peters & Orejas-Miranda 1970
Rossman, Ford & Seigel 1996
Smith & Taylor 1945
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Tropidodipsas fasciata
Central American Banded Snail Eater | 
Auth, Smith, Brown & Lintz 2000
Farr, Lazcano & Lavin-Murcio 2009
Heimes 2016
Kofron 1987
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Family
Elapidae [part 1: terrestrial species] (Cobras, Mambas, etc.) |  |  |
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Micrurus tener
Texas Coral Snake | 
Auth, Smith, Brown & Lintz 2000
Campbell & Lamar 2004
Farr, Lazcano & Lavin-Murcio 2009
Heimes 2016 [as M. tamaulipensis]
Lavin-Murcio & Dixon 2004 [as M. tamaulipensis]
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009 [as M. tamaulipensis]
Martin 1958 [as M. fulvius]
Roze 1996
Teran-Juarez, Garcia-Padilla, Leyto-Delgado & Garcia-Morales 2015 [as M. tamaulipensis]
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016 [as M. tamaulipensis]
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Genus
Epictia (Neotropical Thread Snakes) |
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Genus
Rena (Maroon Thread Snakes) |
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Genus
Agkistrodon (American Copperheads, Cottonmouths, and Cantils) |
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Agkistrodon taylori
Ornate Cantil | 
Campbell & Lamar 2004
Farr, Lazcano & Lavin-Murcio 2013
Gloyd & Conant 1990
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1958
Porras, Wilson, Schuett & Reiserer 2013
Smith & Darling 1952
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
Wallach, Williams & Boundy 2014
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Crotalus morulus
Tamaulipan Rock Rattlesnake | 
Bryson, Linkem, Dorcas, Lathrop, Jones, Alvarado-Diaz, Grunwald & Murphy 2014
Campbell & Lamar 2004
Heimes 2016
Martin 1955 [as lepidus]
Martin 1958
Teran-Juarez, Garcia-Padilla, Leyto-Delgado & Garcia-Morales 2015 [as lepidus]
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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Crotalus scutulatus
Mojave Rattlesnake | 
Campbell & Lamar 2004
Farr & Teran-Juarez 2020
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
Watson, Spencer, Schield, Butler, Smith, Flores-Villela, Campbell, Mackessy, Castoe & Meik 2019
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Crotalus totonacus
Totonacan Rattlesnake | 
Anderson & Greenbaum 2012
Auth, Smith, Brown & Lintz 2000
Campbell & Lamar 2004
Farr, Lazcano & Lavin-Murcio 2013
Heimes 2016
Lazcano, Farr, Lavin-Murcio, Contreras-Lozano, Kardon, Narvaez-Torres & Chaves-Cisneros 2009
Martin 1955 [as durissus]
Martin 1958
Teran-Juarez, Garcia-Padilla, Leyto-Delgado & Garcia-Morales 2015
Teran-Juarez, Garcia-Padilla, Mata-Silva, Johnson & Wilson 2016
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