Squamata

Definition

Squamata is the largest order of reptiles, comprising lizards, snakes, and amphisbaenians. They are characterized by their scaled skin and ability to move their upper jaws independently of their heads.

5 Must Know Facts For Your Next Test

1. Squamata includes over 10,000 species, making it the most diverse order of reptiles.
2. Members of Squamata are distinguished by their skin covered in horny scales or shields.
3. Squamates have a unique jaw structure that allows for significant flexibility and movement.
4. They exhibit a wide range of reproductive strategies, including oviparous (egg-laying) and viviparous (live-bearing) methods.
5. Squamates can be found in a variety of habitats across the world, from deserts to rainforests.

Review Questions

Related terms

Lizards: Reptiles within Squamata characterized by elongated bodies and tails, movable eyelids, and external ear openings.

Snakes: Legless reptiles within Squamata known for their elongated bodies and lack of external limbs.

Amphisbaenians: A subgroup within Squamata consisting mostly of burrowing reptiles with reduced or absent limbs.