A stegosaurus nicknamed Apex will be auctioned in New York. Its remains show signs of arthritis

The nearly complete fossilized remains of a 161-million-year-old stegosaurus discovered in Colorado in 2022 will be auctioned by Sotheby’s in New York next week. Sotheby's officials have named the dinosaur Apex. They say it stands 11 feet tall and measures 27 feet nose to tail. Apex was discovered in May 2022 on private land near the town of Dinosaur, Colorado. The excavation was completed in October 2023, Sotheby’s said. Experts believe stegosauruses used their fearsome tail spikes to fight, but this specimen shows no signs of combat. The fossil does show evidence of arthritis, suggesting that Apex lived to an advanced age.