Mastodonia Author:Clifford D. Simak Asa Steele was unprepared for the incredible events that began to unfold when Rila Eliot -- a long-lost love -- stepped out of the past and his faithful dog Bowser started loping into it through time trails he'd discovered in his own backyard. Rila's appearance was mere coincidence, but Bowser's retrieval of fresh dinosaur bones was ... more »as inexplicable as was the curious crater in Asa's backyard.« less
Time-traveling turns into big business and big trouble when a casual walk down a farm path in a quiet Wisconsin town leads an archeologist into the Pleistocene era and he uncovers an interstellar mystery from before recorded time...