Describes the dinosaurs of the period from 140 to 65 million years ago when the earth underwent dramatic changes.
- ISBN10 0516352881
- ISBN13 9780516352886
- Publish Date 12 December 1931
- Publish Status Out of Print
- Out of Print 28 October 2014
- Publish Country US
- Imprint Capstone
- Format Hardcover
- Pages 48
- Language English