Chasmosaurus --A dinosaur with a small nose horn, two larger horns above the brows, and a frill with large openings in its skeleton. It was about 17 feet in length
Compsognathus--One of the smallest known dinosaurs, no larger than a chicken. It was only 2 1/2 feet in length. It may be an ancestor of the birds.
crush--To break into fine pieces by grinding, pounding or pressing
dinosaur--Now extinct animal of the Mesozoic Era, which was from 225 to 65 million years ago. Some dinosaurs were probably cold-blooded and sluggish reptiles while other were warm-blooded mammals. Some dinosaurs grew to enormous size.
endangered--In danger of dying off or becoming extinct. The giant panda is an endangered animal.
Euoplocephalus--A large ankylosaur with armored bands down its back and a bony tail club. It was about 20 feet in length.
extinct--No longer existing. Dinosaurs became extinct about 65 million years ago.
fossils--Preserved evidence of former life. Fossils can either be imprints, which show what is left when a plant or animal is pressed against something or the actual remains of a plant or animal.
imprints--Marks made by pressure.
Lambeosaurus--A duckbilled dinosaur with a large crest shaped like a hacket blade. It was about 50feet in length.
model--A representation or miniature replica of something.
paleontologist--This is the name of the type of scientist who studies dinosaurs and other fossils.
reptile--Any of a group of vertebrates that are cold-blooded, breathe air, and usually have skin covered with scales or bony plates. Snakes, lizards, turtles, and alligators are reptiles.
skeleton--The framework of bones and cartilage in vertebrates. The skeleton supports the muscles and supports and protects the body's organs.
Stegosaurus--Dinosaur with a huge horn on its snout, two small horns above the eyes and a frill that ended in small spikes. It was about 18 feet in length.
Triceratops--A dinosaur with a large horn above each eye and a smaller horn on the nose, a bony collar extending from the neck and a long and powerful tail. It was about 25-30 feet in length.
Velociraptor--A small but fierce two-legged dinosaur with large claws on its small hands which it used by grasping prey. It was about 6-7 feet in length.