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| Toxicofera | |
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| Venomous snakes, such as the rattlesnake shown above, are the most well-known venomous squamates. | |
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| (unranked): | Toxicofera |
Toxicofera (Greek or Latin for "those who carry toxins"), is a hypothetical clade of living Squamata (lizards and snakes). It includes about 4600 living species. This is all venomous reptile species, plus related non-venomous species.
The clade was identified when research showed that the evolution of venom was very ancient, and that it might have occurred only once. view more...
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