Morrison Formation, Utah, 150 Million Years Ago,
The sun beat down on the Late Jurassic landscape. Today, the temperature was nearing the 100’s. Cold-blooded animals, such as the various lizards and snakes were forced to seek shelter from the heat, or else they’d die from overheating.
But not the dinosaurs.
These magnificent reptiles were all warm-blooded, able to regulate their body temperature on their own. Thanks to this feature, they were given the privilege of becoming active during the day.
Small rat-like mammals scrambled to avoid being trampled by a huge Stegosaurus. Bright stripes of green running along the creature’s back indicted it was male. Weighing in at 2.5 tons, this Stegosaurus was only a juvenile; not fully grown yet. Slowly, but surely, he made his way across the landscape, stopping periodically to forage. Being the dry season, food was in scarcity. The Stegosaurus gulped down every cycad he could find, and, in the process, dropped several crushed remains on the ground. Small two-legged dinosaurs called Othnelia darted out from the shade of the bushes to feed on the leftovers. The Stegosaurus hardly noticed them and continued his meal.
Several yards away from the behind of the Stegosaurus stood another dinosaur.
It was a predator.
Standing there was a fully-grown female Allosaurus fragilis. She was nearly 9 meters long, a size which was unrivaled by most other predators in her area. Her skin was a mixture of yellow and dark green, creating a “combat-camouflage” pattern that effectively helped her blend in with her surroundings. The crest that lay above her eyes flashed bright red, a sign of her maturity. Lodged in her right calf was a Stegosaurus tail spike, which broke off in an unsuccessful attack.
The Allosaurus took a few steps forward, prompting the alert of the Stegosaurus. Turning behind him, the Stegosaurus began flashing his back plates, which turned blood-red. It was an intimidation tactic, and he had hoped it repel the Allosaurus.
She was unfazed.
Behind her were two male Allosaurus. Having the same color pattern as the female, the only indication that they were male were the slightly smaller size and the various battle scars that adorned their faces, a great many of them inflicted by other allosaurs during fights over mates.
The Stegosaurus was in full alarm. The only predators he had fought before were the smaller ceratosaurs, which, while armed with deadly jaws, tended to be more cowardly and retreated often. Now, he was presented with a challenge he never had practice with.
The female Allosaurus took another glance at the Stegosaurus, then continued on her way. The two males followed her, completely ignoring the Stegosaurus. Relieved, he went back into feeding. The Othnelia, which had been hiding at the sight of the three carnivores, came back to eat the scraps.
They were after bigger game.
The three allosaurs made their travel across the desert-forest, spooking a baby Ceratosaurus that had been practicing its hunting skills on a dragonfly. He, like the Stegosaurus, was ignored. Finally, they made it to out of the forest. Waiting for them were two more Allosaurus napping in the shade of a bent tree. The female’s footsteps woke them up. Allosaurus packs were fiercely territorial, but the female need not to worry. They were members of the pack. The bigger of the two napping allosaurs gave a welcoming call to the female and the two males. She responded back with a call of her own. Quickly, the two rose to their feet.
In front of them was a dried-up lake which stretched for miles. In the distance lay a herd of traveling sauropods, specifically Apatosaurus. The big animals were in need of a source of water, migrating from waterhole to waterhole.
The Allosaurus pack began the trek along the dried-up lake.
The hunt was beginning.