Final answer:
The date mentioned, 25 MYA, refers to a time period during the late Oligocene epoch, which is a geological period. The Great Sphinx of Giza, however, is from a different historical period.
Step-by-step explanation:
The date mentioned in the question, 25 MYA (million years ago), refers to a time period during the late Oligocene epoch. The Oligocene epoch, which lasted from approximately 34 MYA to 22 MYA, is a geological period. During this time, the first fossil monkeys appeared, representing the earliest New World and Old World monkeys. The Great Sphinx of Giza, on the other hand, is much younger and was created during the Ancient Egyptian civilization, which is a separate historical period.
Learn more about Oligocene epoch