by Lucas Garcia
Allosaurus is a large, carnivorous theropod dinosaur that lived during the Jurassic period in North America around 155 to 145 million years ago. Fully-grown adults could be over 28 feet long and weigh more than 2 tons. It was named Allosaurus (meaning, different/other lizard) for its, at the time, unique, concave vertebrae. It has dozens of sharp, serrated teeth and a relatively light, but still strong, skull. The most well-known species of Allosaurus is called Allosaurus fragilis (meaning fragile). However, it is visibly very far from fragile, as several fossils show healed (or partially healed) puncture wounds that fit Stegosaurus tail spikes. Nearly all stages of Allosaurus life have been discovered as fossils, from possible eggs all the way to fully grown adults. As with some other large predatory dinosaurs, an interesting part of Allosaurus is that juveniles have comparatively longer legs than the adults and possibly hunted different prey.
The Lighthouse 