INGOMAR MIDDLE SCHOOL SCIENCE     NAME: ______________________
Dinosaurs:                                                            Period: ______ Date: __________ Score_____/ 20
 

1. Corythosaurus: ____________ ___________:
   Weighed between 3000-4000 kilograms(66600-8800 pounds)

2. Dromaeosaurids: ____________ ___________:

More complete fossils of this agile killer undermined old notions that dinosaurs were small brained, sluggish retiles.  Dromaeosaurids was no longer than a small car and no heavier than a human, yet for its size it was more formidably armed than almost any other theropod. Large fangs, rimmed the powerful jaws. Long, strong arms bore three-fingered, grasping hands with sharp claws. Most fearsome was the scythe like claw on the second toe of each of the muscular legs.

3. Euoplocephalus: ___________ ____________:

This genus is best know known ankylosaur, with numerous skulls and much skeletal material from the Oldman and Horsehoe Canyon formations of Alberta, Canada. The body is squat, the carapace protected by numerous keeled and oval scutes, getting larger toward the tail and the belly with small armor processes. The tail has a club. The snout is large and rounded, curved in front and along the sides, and with large nasal openings and a horny beak.

4. Stegosaurs: ____________ ___________:

Grew to a length of about 7.4m and weighted approximately 3.5 metric tons. Some paleontologists have proposed that the animal might have been able to rear up on his hind legs or that the plates lay flat against the body. Stegosaurus is also known from Wyoming, Utah and Gloucestershire, England.

5. Spinosaurus: ____________ ___________:

Spinosaurids are an especially interesting group of “carnosaurs” that developed long dorsal spines that seem to have acted as supports for a large sail of skin. An Allosaurus-sized theropod known from Africa whose spines grew to a length of 6 ft. (1-8m). It is possible that the spinal sail acted as a heat exchanger allowing the dinosaur to warm its blood rapidly when standing in the Sun, or to dissipate heat when the sail was angled out of direct sunlight. Similar spines are found on the iguanodontid Ouranosaurus, also from Niger. Perhaps some climatic factor caused this common development.

6. Velociraptor: ____________ ___________:

A bipedal carnivore 6 ft. (1.8m) long: similar to Deinonychus. It lived in the Late Cretaceous. Found in China and Mongolia.

7. Trannosaurus: ____________ ___________:

One of the most highly evolved of all known theropods, this “tyrant lizard” was one of the most powerful carnivores ever to walk this planet. Also one of the largest theropods, this dinosaur stands some 5.3m tall and is approximately 11.75 m long, with a newly discovered specimen even larger.