In prehistoric times, a 50-foot-long mother crocodile defends her eggs and newly hatched young from attacks by egg- eating dinosaurs and Tyrannosaurus rex.
- ISBN10 039529102X
- ISBN13 9780395291023
- Publish Date 23 April 1980
- Publish Status Out of Print
- Out of Print 21 June 2021
- Publish Country US
- Imprint Houghton Mifflin
- Format Hardcover (Library Binding)
- Pages 32
- Language English