World-renowned paleontologist Richard Leyster's universe changed forever
the day a stranger named Griffin walked into his office with a
remarkable job offer... and an ice cooler containing the head of a
freshly killed Stegosaurus.
For Leyster and a select group of scientific colleagues, an impossible
fantasy has come true: the ability to study dinosaurs up close, in their
own era and milieu. But tampering with time and paradox can have
disastrous effects on the future and the past alike, breeding a violent
new strain of fundamentalist terror--and, worse still, encouraging
brilliant rebels like Dr. Gertrude Salley to toy with the working
mechanisms of natural law, no matter what the consequences. And when
they concern the largest, most savage creatures that ever walked the
Earth, the consequences may be too horrifying to imagine.