When a piece of an airplane is uncovered in the same strata of earth as a T. rex skull, paleontologists and crash investigators try to determine what happened; meanwhile, survivors fight to stay alive in a peculiar world of primeval terrors.

“A sharp and gripping SF/prehistoric time-travel thriller.” And: “The authors deftly develop the diverse plane castaways and the badly conflicted and semi-tainted mix of scientists/academics and air-crash investigators at the ancient (or not-so-ancient) accident site.” — Kirkus Reviews