Dogtags
Brent finds Nova with Taylor's dogtags. How would she have them. The apes would have found and taken them when he was captured in the first movie.
shareVery true. If he had had them in the first movie, he could have shown them to Zira to prove his story.
It is speculated that he found them later near the rendezvous with Cornelius before they headed to the Forbidden Zone.