system
Given the following post, respond as if you're commenting on Reddit:
human
[King Kong 2005] Are the Brontosaurus the same species that existed in the Jurassic Period?
gpt
Not exactly. All of the dinosaurs on skull island are direct descendants of the ancient species, but are new variants based on adapting to life on the island. For example, the brontosaurus that live with Kong are of the type *Brontosaurus Baxteri*, unlike their ancient cousins the *B. excelsus, B. yahnahpin, and B. parvus.*

Likewise the big theropod dinosaurs that kong often fights are not T-Rex, but V-rex. Or Vastatosaurus rex.

Granted, they ARE very similar to their ancient ancestors. Mostly due to the fact that they had little reason to change over 65 million years. The environment on skull island remained largely the same, so then did food remain abundant and patterns of life to go unchanged except in very minor ways.