Ten-year-old dinosaur twins Danny and Donna and their friends go in search of what has dried up Dinoville's water supply and find a slimy sponge plant monster.
- ISBN10 0671620940
- ISBN13 9780671620943
- Publish Date 1 January 1987
- Publish Status Out of Print
- Out of Print 9 November 2015
- Publish Country US
- Imprint Simon & Schuster
- Format Hardcover
- Pages 61
- Language English