Helodermatidae

Helodermatidae Temporal range: Ma PreꞒ Ꞓ O S D C P T J K Pg N
Gila Monster (Heloderma suspectum)
Mexican beaded lizard (Heloderma horridum)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Order:	Squamata
Clade:	Monstersauria
Family:	Helodermatidae Gray, 1837
Genera
Heloderma †Eurheloderma †Lowesaurus

The Helodermatidae or beaded lizards are a small family of lizards endemic to North America today, but formerly more widespread in the ancient past. Traditionally, the Gila monster and the Mexican beaded lizard were the only species recognized, although the latter has recently been split into several species.^[1]

While the fossil record of this family may date back to as far as the