Well according to Jurassic pedia it’s confirmed that 2 apatosaurus were captured off of nublar and it said that they weighed about 21,530 kilograms, a good mid-sized weight for this animal, which means it was still growing.
Determined by another team of Paleontologists. The massive Diplodocid thorough explanation was enough to confirm that Apatosaurus and Brontosaurus are separate species.