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= endemic EX = extinct or assumed extinct

Genus
Anilius (South American Pipe Snake) |
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Genus
Boa (Red-tailed Boas) |
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Boa constrictor
South American Red-tailed Boa | 
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Hoge, Romano & Cordeiro 1978
Miranda, Costa & Rocha 2012
Miranda, Matos, Araujo, Scarpa & Rocha 2013
Silva, Rocha & Nogueira-Paranhos 2016
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Atractus alphonsehogei
Bela Vista Spindle Snake | 
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Passos & Fernandes 2008
Passos, Prudente, Ramos, Caicedo-Portilla & Lynch 2018
Passos, Ramos, Pinna & Prudente 2013
Prudente & Passos 2010
Wallach, Williams & Boundy 2014
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Atractus snethlageae
Gurupi River Spindle Snake | 
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Melo-Sampaio, Passos, Prudente, Venegas & Torres-Carvajal 2021
Passos & Fernandes 2008
Passos, Ramos, Fouquet & Prudente 2017
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Chironius carinatus
Yellow-lipped Sipo | 
Araujo, Franca, Nascimento, Orsi Laranjeiras & Rodrigues Franca 2019
Araujo, Ribeiro, Andrade, Pereira, Guzzi & Avila 2020
Costa, Guedes & Bernils 2021
Dixon, Wiest & Cei 1993
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Hoge, Romano & Cordeiro 1978
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Genus
Clelia (Northern Snake Eaters) |
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Genus
Dipsas (Neotropical Snail Eaters) |
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Dipsas mikanii
Brazilian White-collared Snail Eater | 
Costa, Guedes & Bernils 2021
Cunha, Nascimento & Hoge 1980
Freitas, Almeida, Almeida, Danin & Moura 2014
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
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Drymarchon corais
Yellow-tailed Cribo | 
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Hoge, Romano & Cordeiro 1978
Miranda, Costa & Rocha 2012
Prudente, Menks, Silva & Maschio 2014
Silva, Rocha & Nogueira-Paranhos 2016
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Erythrolamprus poecilogyrus
Yellow-bellied Smooth Snake | 
Araujo, Ribeiro, Andrade, Pereira, Guzzi & Avila 2020
Ascenso, Costa & Prudente 2019
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Hoge, Romano & Cordeiro 1978
Miranda, Costa & Rocha 2012
Rufino 1998
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Genus
Helicops (South American Keelbacks) |
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Helicops angulatus
Brown-banded Keelback | 
Borges-Nojosa, Dourado de Mesquita & Fernandes-Ferreira 2008
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Frota 2005
Hoge, Romano & Cordeiro 1978
Miranda, Costa & Rocha 2012
Moraes-da-Silva, Amaro, Sales Nunes, Rodrigues & Curcio 2021
Moraes-da-Silva, Amaro, Sales Nunes, Strussmann, Teixeira, Andrade, Sudre, Recoder, Rodrigues & Curcio 2019
Roberto, Ribeiro, Sousa-Delfino & Oliveira-Almeida 2009
Silva, Rocha & Nogueira-Paranhos 2016
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Helicops trivittatus
Three-striped Keelback | 
Costa, Guedes & Bernils 2021
Moraes-da-Silva, Amaro, Sales Nunes, Rodrigues & Curcio 2021
Moraes-da-Silva, Amaro, Sales Nunes, Strussmann, Teixeira, Andrade, Sudre, Recoder, Rodrigues & Curcio 2019
Oliveira, Silva, Santos, Barriga, Gabriel & Costa-Campos 2015
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Genus
Hydrops (South American Mud Snakes) |
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Genus
Imantodes (American Blunt-headed Tree Snakes) |
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Leptophis ahaetulla
Common Green Parrot Snake | 
Albuquerque & Fernandes 2022
Albuquerque, Santos, Borges-Nojosa & Avila 2022
Araujo, Ribeiro, Andrade, Pereira, Guzzi & Avila 2020
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Hoge, Romano & Cordeiro 1978
Miranda, Costa & Rocha 2012
Oliver 1948
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Genus
Lygophis (South American Striped Ground Snakes) |
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Mastigodryas boddaerti
Brown Lizard Eater | 
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Hoge, Romano & Cordeiro 1978
Siqueira, Nascimento & Santos-Costa 2012
Siqueira, Nascimento, Montingelli & Santos-Costa 2013
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Genus
Oxybelis (Neotropical Vine Snakes) |
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Oxybelis aeneus
Brown Vine Snake | 
Araujo, Ribeiro, Andrade, Pereira, Guzzi & Avila 2020
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Hoge, Romano & Cordeiro 1978
Miranda, Costa & Rocha 2012
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Palusophis bifossatus
Eastern Lizard Eater | 
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Miranda, Costa & Rocha 2012
Montingelli 2009
Montingelli, Grazziotin, Battilana, Murphy, Zhang & Zaher 2019
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Genus
Phalotris (South American Collared Snakes) |
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Genus
Phimophis (South American Shovel-nosed Snakes) |
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Pseudoboa nigra
Blackish Scarlet Snake | 
Araujo, Ribeiro, Andrade, Pereira, Guzzi & Avila 2020
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Orofino, Pizzatto & Marques 2010
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Genus
Sibon (Neotropical Snail Eaters) |
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Spilotes pullatus
Chicken Snake | 
Araujo, Ribeiro, Andrade, Pereira, Guzzi & Avila 2020
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Miranda, Costa & Rocha 2012
Silva, Rocha & Nogueira-Paranhos 2016
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Genus
Tantilla (American Centipede Snakes) |
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Genus
Xenodon (Northern Mock Lanceheads and South American Hognose Snakes) |
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Genus
Xenopholis (South American Flat-headed Snakes) |
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Family
Elapidae [part 1: terrestrial species] (Cobras, Mambas, etc.) |  |  |
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Bothrops atrox
Common Lancehead | 
Campbell & Lamar 2004
Carrasco, Grazziotin, Farfan, Koch, Ochoa, Scrocchi, Leynaud & Chaparro 2019
Costa, Guedes & Bernils 2021
Freitas, Vieira, Entiauspe-Neto, Oliveira-e-Sousa, Farias, Sousa & Moura 2017
Hoge & Romano Hoge 1981
Hoge, Romano & Cordeiro 1978
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