Looks like a lot of this level made it into the game, with pieces of it being distributed into the other levels.
It's cool to see that there are more than three Brachs in this walkthrough. "Brachiosaurs are visible in the extreme distance, grazing on the few trees..." More like, "Brachiosaurs are visible in the extreme distance, motionless and floating eight feet in the air," for the retail version.
So there's also a T-Rex here. Could this the missing seventh Rex?
I noticed that, contrary to what many of us believed, there are many dinosaurs with battery collars. This is a very nonlinear level.
There is also no mention of Albertosaurs here, even though people have thought Albertosaurs were in this level. Hammond even says the Albertosaurs "took to the plains like lions to the Serengeti." I'm gonna guess Albertosaurs were involved at some point, but I consider this possible evidence that the dinosaur you had to kill to get the battery was not an Albertosaur.
In fact, I actually suspected that the developers narrowed down the number of dinosaurs with collars in The Plains to one. The question is, what was it Anne had to kill? If I had to guess, I'd go with a Triceratops with a black frill that was bigger than the other Trikes in the area. (An Alpha Trike, perhaps?)
VA134: They're just cows. Just big cows.
VA129: That black crest... Some kind of species varriant. DNA from a different period or.. another continent.
VA135: Must be the big one.
VA136: God, she’s big.
VA137: She’s on to me.
VA138: Come on!
VA139: Finish it, Anne!
VA140: Fall, damn you!
VA141: Come on, fall!
It seems very possible and something the developers would have done, but who knows?
The fight at the dam was a great idea, but it's easy to see why they cut it. It would have been a cool scene, though. It reminded me of the bridge scene in "Indiana Jones and the Temple of Doom."
That cement structure is very mysterious, too. I have no clue what the story behind it could have been. Perhaps this voice over was referring to it?
VA133: Cool in here, some kind of storage…
Maybe?