Category
page 1Helodermatidae
Gila monster
species of venomous lizard from the southwestern United States and northwestern Mexico

Heloderma horridum
North American species of lizard

Heloderma
Heloderma is a genus of toxicoferan lizards that contains five species, all of which are venomous. It is the only extant genus of the family Helodermatidae.
Helodermatidae
The Helodermatidae or beaded lizards are a small family of lizards endemic to North America today, mainly found in the Isthmus of Tehuantepec in Oaxaca, the central lowlands of Chiapas, on the border of Guatemala, and in the Nentón River Valley, though they were 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.

Guatemalan beaded lizard
species of reptile
Río Fuerte beaded lizard
species of reptile