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Squamata (scaled reptiles) is the most diverse order of extant reptiles, comprised of the lizards and snakes and characterized a flexible jaw structure (movable quadrate bones) and having scales or shields rather than shells or secondary palates.
Aug 16, 2019 · Updated on August 16, 2019. Squamates (Squamata) are the most diverse of all the reptile groups, with approximately 7400 living species. Squamates include lizards, snakes, and worm lizards. There are two characteristics that unite the squamates. The first is that they shed their skin periodically.
The scaled quail (Callipepla squamata), also commonly called blue quail or cottontop, is a species of the New World quail family. It is a bluish gray bird found in the arid regions of the Southwestern United States to Central Mexico. This species is an early offshoot of the genus Callipepla, diverging in the Pliocene.
Order Squamata. Number of families About 42. Number of genera, species About 1,880 genera; 7,200 species. Evolution and systematics. Squamates are the most diverse living clade of reptiles, including about 1,440 genera and 4,450 species of lizards plus 440 genera and 2,750 species of snakes.
Agamidae, (order Squamata), lizard family composed of about 350 species in about 50 genera. Agamids typically have scaly bodies, well-developed legs, and a moderately long tail; average body size ranges from 10 to 15 cm (4 to 6 inches), and the tail is 20 to 30 cm (8 to 12 inches) long, though the family varies widely.
David J. Gower and. Hussam Zaher. Chapter. Figures. Save PDF. Summary. Squamata, the group that comprises lizards, snakes, and amphisbaenians, is the largest and most diverse major group of living reptiles.
May 30, 2018 · Modern squamates (lizards, snakes and amphisbaenians) are the world’s most diverse group of tetrapods along with birds 1 and have a long evolutionary history, with the oldest known fossils dating...
