Children's Museum
Children's Museum of Indianapolis: Geologic Timeline
Here is an excellent example of a picture timeline. Follow the Eras of the Earth from Cenozoic all the way down to Precambrian with the use of fossils.
Children's Museum
The Children's Museum of Indianapolis: Dracorex Hogwartsia
The Dracorex hogwartsia lived 66 million years ago. It was discovered in South Dakota. Due to its resemblance to a dragon, scientists named it Dracorex hogwartsia in author J. K. Rowling's honor. A brief description is given here.