Was Brontosaurus a real dinosaur?

Sorry that this video is so late, I got caught up with various things. I guess this video also sort of counts as a voice reveal.

Anyway, this video goes over the history of the palaeontology of Brontosaurus, and the confusing taxonomy along with it. This isn't the most confusing example though, as in the next video, there will be even more confusing examples.
TLDW (too long didn't watch): After being the same genus for 112 years, Brontosaurus is a separate dinosaur from Apatosaurus again.

The movie shown at 2:33 is The Lost World (1925), the music at 5:15 is Suggestions from Wii Party (   • Wii Party Soundtrack 003 - Suggesttions  ), and the skeletal diagrams used at 4:14 were made by Scott Hartman (https://www.skeletaldrawing.com/sauropods-....

The paper that brought back Brontosaurus is
Tschopp, E.; Mateus, O. V.; Benson, R. B. J. (2015). "A specimen-level phylogenetic analysis and taxonomic revision of Diplodocidae (Dinosauria, Sauropoda)". PeerJ. 3: e857. doi:10.7717/peerj.857.

0:00 Intro
0:13 Sauropoda definition
0:23 Genus and species definition
0:34 1877 - The Bone Wars
0:51 1879 - The discovery and naming of Brontosaurus excelsus
1:11 1883 - The wrong skull
1:42 The old Brontosaurus depictions
1:48 Brontosaurus gets synonymised with Apatosaurus
2:33 Brontosaurus the movie star
2:46 The correct skull?
3:27 Brontosaurus returns
4:14 The anatomical differences between Brontosaurus and Apatosaurus
5:00 Outro
5:15 Upcoming videos