- Jurassic Age
- Morrison Formation
- South Dakota
- This is the FIRST TIME I have had any fossils from this RARE Sauropod! The centrum measures approx. 6″ wide, the process measures approx. 12″ long and the height of the specimen is approx. 11″ tall. Like most Jurassic fossils, this specimen has had a few crack repairs and minor restoration. Overall this is a very pretty specimen!
Barosaurus was a giant, long-tailed, long-necked, plant-eating dinosaur closely related to the more familiar Diplodocus. Remains have been found in the Morrison Formation from the Upper Jurassic Period of Utah and South Dakota. It is present in stratigraphic zones 2-5.
Barosaurus was an enormous animal, with some adults measuring more than 25–27 meters (82–89 feet) in length and weighing about 12–20 metric tons (13–22 short tons). There are some indications of even larger individuals, such as the enormous vertebra from the BYU 9024 specimen, which is 1.37 meters (4.5 ft) long. It belongs to an animal that was 48 meters (157 ft) long and around 66 tonnes (73 short tons) in weight making it one of the largest known dinosaurs, with a neck length of at least 15 meters (49 ft) according to Mike Taylor. In 2020 Molina-Perez and Larramendi estimated it to be slightly smaller at 45 meters (148 ft) and 60 tonnes (66 short tons). Barosaurus was differently proportioned than its close relative Diplodocus, with a longer neck and shorter tail, but was about the same length overall. It was longer than Apatosaurus, but its skeleton was less robust.