Animals are considered extinct when the last remaining member of their specific species dies out and there are no more left on Earth. Causes of extinction include disease, infertility, climate changes, extreme environmental changes or loss of food sources and the destruction of natural habitats. The extinction of a large number of species is called an extinction event.

Monday, December 6, 2010. Wednesday, November 10, 2010. The elephant bird, was a giant bird. Have been extinct since at least the 17th century. The elephant bird, were giant birds. Have been extinct since at least the 17th century. Wednesday, October 20, 2010. Megalodon shark, or Carcharocles megalodon. Was a very large shark that existed in the Oligocene and Pleistocene era, approximately from 25 to 1. Wednesday, October 13, 2010.

News, pictures, history and such from David Oneal. New Billboards on the freeway and Haunted Mansion. Hi everybody, Just wanted to share some pictures in this post. With you, saw a new billboard this week on the freeway and. Thought it looked cool, Plus I wanted to share some Haunted. So I was driving to Hollywood, when I looked over on my right, and saw a new Billboard! .

In a ceremony of the future, Walt Disney, along with designer. How America Sings Came to be. The show was designed in cooperation .

Tuesday, July 15, 2008. It had a very small brain, the size of a walnut. It needed the big, bony plates on its back to protect itself. Some dinosaurs developed strange heads. Parasaurolophus might have used its long crest to push branches aside. Scientists still have not discovered the reason for all their bumps and horns.