It Came from Schenectady

From back cover Popular Library paperback May 1986:

TO TIMES UNTOLD AND WORLDS BEYOND...

Let Barry Longyear, the only author ever to have won the Hugo, Nebula and John W. Campbell Awards in the same year, guide you through his own private universe of the imagination... a realm where the dinosaurs, after 70 million years, decide it is finally time to return to Earth... an interstellar wonderland where starships fly on philosopher power... and a world where a twenty-five-year prison sentence can be lived in five minutes. Here even the rocks beneath your feet could become your valued ally or deadly foe, and dreams could prove the ultimate gateway to new dimensions.