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The Mexican beaded lizard is larger than the Gila monster, with duller coloration, black with yellowish bands. As it is a specialized predator that feeds primarily upon eggs, the primary use of its venom is still a source of debate among scientists.
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, [1] though they were formerly more widespread in the ancient past.
Mexican beaded lizard skeleton (Museum of Osteology) The type species is Heloderma horridum , which was first described in 1829 by Arend Wiegmann . Although he originally assigned it the generic name Trachyderma , he changed it to Heloderma six months later, which means "studded skin", from the Ancient Greek words hêlos (ηλος)—the head ...
The Rio Fuerte beaded lizard (Heloderma exasperatum) is a venomous species of beaded lizard in the family Helodermatidae. It is found in the tropical forests and shrublands of western Mexico, specifically around the Rio Fuerte and Rio Mayo basins. It is often found in or near abandoned mammal burrows and sources of water. [4] [5]
The Gila monster is the largest extant lizard species native to North America north of the Mexican border. Its snout-to-vent length ranges from 26 to 36 cm (10 to 14 in). The tail is about 20% of the body size, and the largest specimens may reach 51 to 56 cm (20 to 22 in) in total length.
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The Mexican beaded lizard is the largest species in family Helodermatidae, reaching a length of up to 91 cm (36 in) This family includes large and stocky lizards, ...
Women buried in a lavish grave 5,000 years ago wore beaded garments, suggesting they held positions of power. The beads could have taken 10 people seven months to make.