05/29/2026
Happy ! In 1991, our was at the American Museum of Natural History in New York to cast and mount the skeletons for both the Barosaurus, it's young and the Allosaurus. This also included constructing the custom steel armatures for the entire dramatic scene.
If you’ve visited the Museum, you’re certainly familiar with today’s Fossil Friday feature: the Barosaurus and Allosaurus in the Rotunda! Rising 50 ft (15 m) above the ground, it’s the world’s tallest freestanding dinosaur mount.How does the huge skeleton of Barosaurus—whose name means “heavy reptile”—stay up? The Barosaurus is built from casts of real bone since fossils are too heavy to support in this way. The original fossils are housed in the Museum’s collections!
Photo: D. Finnin / © AMNH