Describes the periods of time from five billion years ago to sixty million years ago and the big animals which lived during some of that time.
- ISBN10 0448040840
- ISBN13 9780448040844
- Publish Date 1 January 1982
- Publish Status Out of Print
- Out of Print 10 May 2014
- Publish Country US
- Imprint Grosset & Dunlap
- Format Hardcover
- Pages 64
- Language English