The limb bones of "Barosaurus" were virtually indistinguishable from those of "Diplodocus". Both were quadrupedal, with columnar limbs adapted to support the enormous bulk of the animals. "Barosaurus" had proportionately longer forelimbs than other diplodocids, although they were still shorter than most other groups of sauropods. There was a single carpal bone in the wrist, and the metacarpals were more slender than those of "Diplodocus". "Barosaurus" feet have never been discovered, but like other sauropods, it would have been digitigrade, with all four feet each bearing five small toes. A large claw adorned the inside digit on the manus (forefoot) while smaller claws tipped the inside three digits of the pes (hindfoot).