Arcusaurus - Alchetron, The Free Social Encyclopedia

Extinct Era on Instagram: "Allosaurus fossils show signs of intense physical stress, including not just broken ribs and crushed skulls but also evidence of a fractured lower jaw that had healed. This suggests they endured serious injuries and still managed to survive, possibly due to a high pain tolerance or strong healing ability. Some scientists think Allosaurus used threat displays against rivals, lowering its head, opening its mouth wide, and swinging its tail to intimidate opponents. Its ne

⏰ 𝗙𝗼𝗹𝗹𝗼𝘄 𝘁𝗼 𝗴𝗼 𝗯𝗮𝗰𝗸 𝗶𝗻 𝘁𝗶𝗺𝗲 on Instagram: "Sixty-six million years ago, this Arkansaurus wasn’t having the best day. It had been spotted by three Deinonychus lurking nearby. Arkansaurus was a herbivore that usually relied on its incredible speed to survive — but these Deinonychus were 10–13 feet long, built for running, and had been planning this hunt. With razor-sharp sickle claws that could tear through flesh, they took turns sprinting to wear their prey down. Overheated an