The Maybe Biggest Dinosaur

Amphicoelias fragillimus, a dinosaur known only from an 8ft tll backbone that crumbled to dust on the train ride back to New York. Even though it was a reletivle skinny diplodocid, this monster would have been one of the biggest land animals ever, and some estmates say it was 200ft long.

I stuck an 18ft long Allosuarus in there for size comparison. I based the big guy off other diplodocids, mainly Apatosaurus, Rebbachisaurus, and Dicreaosaurus (since it was apparently fairly basal. They recently found new specimens of Amphicoelias altus, so I bet this will be obsolete pretty soon).

Oh, and it's filling its massive gut with low-level vegetation, because, based on Kent Stevens and DinoMorph, sauropods couldn't lift their heads much above shoulder height.

Deviation song.
Benjamin Bartlett - Time of the Titans