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A Species-Level Phylogeny of Extant Snakes with Description of a New Colubrid Subfamily and Genus
Fig 4
Phylogenetic tree of Serpentes continued.
Ai) Viperinae. Aii) Azemiopinae and Crotalinae. B) Crotalinae continued.
doi: https://doi.org/10.1371/journal.pone.0161070.g004