Before T Rex ruled an earth populated with dinosaurs, a class of creatures called synapsids roamed our world. Some were gentle and some were dangerous predators. Through a 'time snag', one of each enters the current world into what is now Colorado.
Two thirteen-year-olds, Phoebe and Rob are investigating the disappearance and death of pets in the area when they meet Sid, a gentle beast, who is being stalked by the vicious gorgonopsid. The two friends find out they must help Sid send the gorgon back to its own time to insure the evolution of all things, especially humans.
This exciting time travel adventure has wonderful characters, both, good and evil, human and beast.
Date read: 9/21/2010
ISBN-10: 038590567X
ISBN-13: 9780385905671
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