The ~2 meters long femur of a titanosaur, a class of diverse groups of sauropod dinosaurs, which includes the largest land animals known to have existed, such as Patagotitan— estimated at 37 m (121 ft) long https://t.co/uQx2BjKDSD [photo: https://t.co/rgIA5UgXff] pic.twitter.com/gvz1Jg4Ujt

— Massimo (@Rainmaker1973) February 9, 2019