Apatosaurines = hefty lads. As usual with my 3D work, this is an idealised reconstruction, but scaled to a known specimen - in this case, the Carnegie Museum type specimen of Apatosaurus louisae. Based on partial remains, Apatosaurines could get substantially bigger than this.
Because of the generalised nature of this reconstruction, it would also be a pretty suitable reference for other Apatosaurines with only very, very minor shape changes. Apatosaurus, Brontosaurus, and a small handful of very complete but currently taxonomically indeterminate specimens are extremely similar animals. Insert Pam Beesly "it's the same picture" meme here. More discrete characters aside, there's a lot of overlap in shape between them, and I doubt we've heard the last word on the specific who's who of the Apatosaurus-Brontosaurus complex.
Before anyone call me out, I'm more than aware of how inconsistent I've been with how dark to make the gradient grey of the backgrounds of my 3D skeleton charts. I can't decide which I like more. I'm a terrible person, I know.
You might have noticed a bit of a focus on skeleton models recently - that's because a bunch of my skeleton work will feature in the upcoming indie horror platformer "Terrible Lizards", which is set at a dinosaur-themed Route 66 roadside attraction: https://store.steampowered.com/app/2920220/Terrible_Lizards/.