Helodermatidae
The only famously venomous lizards: the Gila monster and beaded lizards.
5 species live on this branch.
Photo: Josh Olander, CC BY 4.0, via Wikimedia Commons
A face from this branch: Gila Monster
Where Helodermatidae sits on the tree
Taxonomic data: Uetz, P. et al. (eds.), The Reptile Database, under CC-BY 4.0.