sentences: "Harry Turtledove deems the piece a "classic, ... at the same time a fine character study, a meditation on time-travel paradoxes (here treated as something the continuum seeks to avoid rather than a likely result of voyaging into the past), and a splendid re-creation of a vanished world.De Camp makes the reader feel the heat and humidity of the world to which Reginald Rivers and his band of hunters are transported--and feel the bites from insects with mouthparts evolved to pierce dinosaur hide.