Dinosaurs

= Dinosaurs  = = History =

=**There are 3 period of dinosaurs dinosaurs time table**=
 * 1. The Triassic Period about 245 million years ago** Triassic
 * 2. The Jurassic Period about 208 million years ago Jurassic**
 * 3. The Cretaceous Period about 144 million years ago Cretaceous**

= Types of dinosaurs = = ﻿Meat eaters = = 1. Tyrannosaurus rex (T-rex) ﻿ T-rex =


 * 67-65 million years ago
 * Late Cretaceous period
 * Average 39 feet long, 20 feet tall, and weighed around 7 tonnes

= 2. Allosaure [|Allo] = = =
 * 154-135 million years ago
 * Jurassic period
 * Up to 39 feet long(11.9 m), weighed 1.7 tonnes

= 3. Megalosaurus Mega =
 * 181-169 million years ago [[image:meg.jpg width="224" height="141" align="right"]]
 * During the middle Jurassic period
 * 30 feet (9 m) long, weighed about 1 tonne

= Plant eaters =

= 1. Apatosaurus Apato =
 * 150-200 million years ago
 * During the Jurassic period
 * 23 m length, weighed about 23 tonnes

= 2. Stegosaurus [|Stego] =
 * About 150 million years ago
 * 30 feet long, 9 feet tall,and weighed about 4-6 tonnes
 * Late Jurassic period[[image:steg.jpg width="355" height="244" align="right"]]

= 3.Triceratops [|Tricer] =
 * 65-68 million years ago
 * Late Cretaceous period
 * 10 feet hight, 30 feet long, and weighed around 10 tonnes

= The extinctions [|Extinct]= What really happened over 65 millions years ago to kill about 70% of all dinosaurs that had survived for about 150 million years? = 1.Asteriod Impact = = =

= 2.Climate Change = = 3. Vocanic Eruptions = = 4. Disease = The answer is no one knows for sure!media type="youtube" key="lPDtC-NEopo?fs=1" height="385" width="640"