Author has sold 500,000 fun thrillers. An alien extermination fleet arrives in 50 years, but physicists discovered a portal to dinosaur times. Only by putting people in the past can we survive the future. All we must do is create a self-sustaining population in a world dominated by Earth’s fiercest creatures. What could go wrong? #1 in Science Fiction Adventure, #1 in Time Travel Science Fiction, #1 in First Contact Science Fiction, #1 in Historical Thrillers, #1 in Technothrillers, #1 in Pulp Thrillers, #1 in Dystopian Science Fiction, #1 in First Contact Science Fiction, #1 in Paranormal and Urban Fantasy, and #1 in Alien Invasion Science Fiction on Amazon.com.PRAISE FROM AMAZON VERIFIED REVIEWS: “Hard to put down. Riveting. I was astonished. Great book. Fantastic writing.” “Amazing, amusing, and astounding. Great dinosaur fights.” “A new take on time travel…A fast paced read.” “A monstrous tale with an original premise. I loved it.” “Mesmerizing. Bold. Original. Fantastic plot.” “Great concept. Cool chases. Big battles.” "Very original. Great book. I was impressed." "Fantastic tale. Cool dino fights. I loved this saga. Expert writing."