Ascendance - Rise of Man, #1

Would humankind have survived if aliens found us before we found technology? The lower forests crawl with danger, yet the cold and unforgiving mountains provide little to sustain a family. In the age of stone and fire, the world is filled with unknown threats to the survival of Karg's family. When he finally discovers safety in a hidden valley, an explosion shakes the mountain, awakening yet another terrifying danger: the Kthpok. Extraterrestrial invaders have harnessed nuclear technology and seek to dominate the earth and enslave their human rivals. The Kthpok have discovered Karg's family.
And now they are hunted. If his family can't evolve to face the enemy, the freedom and future of humankind will be lost. Lovers of Jurassic Park, Dune, and alternate history will devour this epic beginning to the Rise of Man trilogy. Ascendance is a new take on sci-fi favorites. Get it now.