The Raptor's Dawn. The Epoch Shifter, #1

To save the future, he must become the ultimate predator. The year is 2487. Humanity survives in sterile, grey domes, safe but suffocating. The air is recycled, the food is synthetic, and history is a dead database. But for Cadet Jaxen Rift, the grey world is a prison. Born with a genetic anomaly that makes him a biological outcast, Jax craves something the future cannot give him: reality. He is about to get more than he bargained for.
A cosmic entity known as "The Chronophage" is devouring the timeline, erasing history from the bottom up. It has landed in the Late Cretaceous, 66 million years ago, and it is hunting the ancestors of humanity. The Temporal Watch has a plan, but they can't send machines, and humans can't breathe the ancient air. They need a weapon that belongs in the past. They need Jax. Using the experimental "Chrysalis" technology, Jax is sent back to the dawn of the extinction event.
But he doesn't go as a man. To survive the jungle, he must have his DNA rewritten. He must shed his skin, break his bones, and become the era's most efficient killer: a Dakotaraptor. Trapped in a dinosaur's body, Jax must hunt the Void-Beasts-monsters made of static and rot that are infecting the local fauna. But the jungle isn't the only danger. As the hours tick by, the raptor's instincts begin to bleed into his human mind.
The hunger is real. The rage is intoxicating. And if Jax stays in the skin too long, he won't just save the past... he'll become part of it. The Raptor's Dawn is a high-octane temporal thriller that subverts the traditional time-travel trope. Instead of sending agents back with futuristic gadgets to observe history, the Temporal Watch sends agents who become history. The protagonist, Jaxen Rift, must biologically transform into a dinosaur to survive the Cretaceous era and stop an entropy-eating entity called the "Chronophage." The story explores themes of identity, the feral nature of instinct versus human logic, and the cost of survival.