Genus Thamnophis
(garter snakes and ribbon snakes)

Scientific names for Aves taxonomy (family and below) are from The Howard and Moore Complete Checklist of the Birds of the World, Princeton University Press, copyright 2003. Used by permission.

• Parent taxa
  
  
  
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  Family Colubridae (colubrids)
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  Genus Thamnophis (garter snakes and ribbon snakes)
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  Species Thamnophis angustirostris
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  Species Thamnophis atratus (Santa Cruz garter snake)
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  Species Thamnophis brachystoma (short-headed garter snake)
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  Species Thamnophis butleri (Butler's garter snake)
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  Species Thamnophis chrysocephalus
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  Species Thamnophis couchii (Couch's garter snake)
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  Species Thamnophis cyrtopsis (black-necked garter snake)
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  Species Thamnophis elegans (western terrestrial garter snake)
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  Species Thamnophis eques (Mexican garter snake)
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  Species Thamnophis exsul
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  Species Thamnophis fulvus
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  Species Thamnophis gigas (giant garter snake)
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  Species Thamnophis godmani
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  Species Thamnophis hammondii (two-striped garter snake)
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  Species Thamnophis marcianus (checkered garter snake)
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  Species Thamnophis melanogaster
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  Species Thamnophis mendax
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  Species Thamnophis ordinoides (northwestern garter snake)
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  Species Thamnophis proximus (western ribbon snake)
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  Species Thamnophis radix (plains garter snake)
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  Species Thamnophis rossmani
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  Species Thamnophis rufipunctatus (narrow-headed garter snake)
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  Species Thamnophis sauritus (eastern ribbon snake)
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  Species Thamnophis scalaris
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  Species Thamnophis scaliger
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  Species Thamnophis sirtalis (common garter snake)
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  Species Thamnophis sumichrasti
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  Species Thamnophis valida