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Pachycephalosaurus

(Encyclopedia) PachycephalosaurusPachycephalosauruspăkˌĭsĕfˌəlōsôrˈəs [key] [Gr., = thick-headed lizard], bipedal herbivorous dinosaur of the late Cretaceous period, approximately 68–65 million years…

monitor, in zoology

(Encyclopedia) monitor, any of various, mostly tropical lizards. A monitor lizard has a heavy body, long head and neck, long tail that comes to a whiplike end, and strong legs with sharp claws. Its…

Stegosaurus

(Encyclopedia) StegosaurusStegosaurusstĕgəsôrˈəs [key] [Gr.,=roof lizard], quadriped ornithischian dinosaur of the late Jurassic period. About 29 ft 6 in (9 m) long, it had short forelegs, four long…

tody

(Encyclopedia) todytodytōˈdē [key], common name for small (3–4 in./9–10 cm) West Indian birds of the family Todidae, comprising the single genus Todus. Bright green above with red throats, they are…

Classification of the Dinosaurs

Dinosaurs (“terrible lizards”) belong to a large group of reptiles called Archosauria (“ruling reptiles”). They are classified into two distinct orders, which are distinguished by their pelvic…

Tyrannosaurus

(Encyclopedia) TyrannosaurusTyrannosaurustīrănˌōsôrˈəs, tĭr– [key] [Gr.,=tyrant lizard], member of a family, Tyrannosauridae, of bipedal carnivorous saurischian dinosaurs characterized by having…

hoatzin

(Encyclopedia) hoatzinhoatzinwätsēnˈ [key] [Aztec], common name for a peculiar marsh bird, Opisthocomus hoatzin. The hoatzin is a slender bird with a brownish plumage spotted with white above and…

gecko

(Encyclopedia) geckogeckogĕkˈō [key], small or medium-sized lizard of the family Gekkonidae. Some 1,500 species are distributed throughout the warm regions of the world, mostly in the Old World.…

Snakes with Legs?

And other recent science discoveries by Otto Johnson More Discoveries IntroductionIce Age Haute CoutureAntisocial Brain Tissue DeficitNew Orleans, the New Atlantis?First Cloned…