Advertisement.

EnchantedLearning.com is a user-supported site.
As a bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages.
Click here to learn more.

ad
(Already a member? Click here.)

ZoomDinosaurs.com
ALL ABOUT DINOSAURS!
What is a Dinosaur? Dino Info Pages Dinosaur Coloring Print-outs Name That Dino Biggest, Smallest, Oldest,... Evolution of Dinosaurs Dinos and Birds Dino Myths

OURANOSAURUS
"Brave Lizard"

ANATOMY
OuranosaurusOuranosaurus was a sail-backed, plant-eating, iguanodontid dinosaur from the early Cretaceous period. It was about 24 feet (7 m) long and may have weighed about 4 tons.

Ouranosaurus' sail was formed by long-spined vertebrae in the backbone. The spines stuck out from its back and tail; the spines were covered with skin. The sail was probably used for temperature regulation in the hot, African environment. It would help the animal cool down in the heat of day, by dispersing extra heat when the sail was turned away from the sun. It would also help Ouranosaurus collect heat early in the morning when the sail faced the sun. The sail may also have been used for mating displays, intraspecies rivalry, or to make it look larger when confronting predators. Ouranosaurus had few defenses.

Ouranosaurus' skull was longer than other iguanodontid skulls. It had a bit of a crest on its snout, two bony bumps. Ouranosaurus had a flat, wide, toothless beak, and many cheek teeth for grinding plant material. The neck was short and flexible. There were five short fingers on each hand. The second and third fingers had hoof-like nails that Ouranosaurus probably used when it went on all four limbs to graze low-lying plants. Each thumb had a small conical spike like Iguanodon.

WHEN OURANOSAURUS LIVED
Ouranosaurus lived in the early Cretaceous period, about 115-110 million years ago. Spinosaurus, a large, sail-backed meat-eater, was one of its contemporaries in the hot, Cretaceous environment of north Africa.

INTELLIGENCE
Ouranosaurus was an ornithopod, whose intelligence (as measured by its relative brain to body weight, or EQ) was midway among the dinosaurs.

EQ


DIET
Ouranosaurus was an herbivore, a plant eater. It probably ate leaves, fruit, seeds, and other plant material with its tough beak. It had no teeth in its beak, but had many cheek teeth that it used for grinding up tough plant material.

LOCOMOTION
OuranosaurusOuranosaurus could run on two legs or walk on four; it was a relatively slow, bulky dinosaur. Dinosaur speeds are estimated using their morphology (characteristics like leg length and estimated body mass) and fossilized trackways.

DISCOVERY OF FOSSILS
NigerTwo almost complete Ouranosaurus fossils were found in the southern Sahara Desert, in northeast Niger, Africa, in 1966. Ouranosaurus was named by the French paleontologist Phillippe Taquet in 1976.

OURANOSAURUS ACTIVITIES

CLASSIFICATION
Ouranosaurus belonged to the: Other iguanodontids include Iguanodon, Camptosaurus, Muttaburrasaurus, and Probactrosaurus.



Information Sheets About Dinosaurs
(and Other Prehistoric Creatures)

Just click on an animal's name to go to that information sheet. If the dinosaur you're interested in isn't here, check the Dinosaur Dictionary or the list of Dinosaur Genera. Names with an asterisk (*) were not dinosaurs.
How to write a great dinosaur report.

For dinosaur printouts, click here.

For brief dinosaur fact sheets, click here.




Enchanted Learning®
Over 35,000 Web Pages
Sample Pages for Prospective Subscribers, or click below

Overview of Site
What's New
Enchanted Learning Home
Monthly Activity Calendar
Books to Print
Site Index

K-3
Crafts
K-3 Themes
Little Explorers
Picture dictionary
PreK/K Activities
Rebus Rhymes
Stories
Writing
Cloze Activities
Essay Topics
Newspaper
Writing Activities
Parts of Speech

Fiction
The Test of Time
iPhone app
TapQuiz Maps - free iPhone Geography Game

Biology
Animal Printouts
Biology Label Printouts
Biomes
Birds
Butterflies
Dinosaurs
Food Chain
Human Anatomy
Mammals
Plants
Rainforests
Sharks
Whales
Physical Sciences: K-12
Astronomy
The Earth
Geology
Hurricanes
Landforms
Oceans
Tsunami
Volcano
Languages
Dutch
French
German
Italian
Japanese (Romaji)
Portuguese
Spanish
Swedish
Geography/History
Explorers
Flags
Geography
Inventors
US History

Other Topics
Art and Artists
Calendars
College Finder
Crafts
Graphic Organizers
Label Me! Printouts
Math
Music
Word Wheels

Click to read our Privacy Policy

E-mail


Enchanted Learning Search

Search the Enchanted Learning website for:



Advertisement.



Advertisement.



Advertisement.




Copyright ©1996 EnchantedLearning.com ------ How to cite a web page