It was at this level I discovered cutting tools and arrowheads of quartz and the fossilized bones of carnivorous gorillas.
11 seconds sound clip from the Planet of the Apes (1968) movie soundboard.
You can hear this line at 01:35:03 in the Blu-ray version of the movie.
Quote context
[...]
- Always giving orders, just like every other adult.
- Relax, you'll get to see it all later on.
- Present your evidence, Cornelius.
- It was at this level that I discovered traces of an early ape creature...
- A stage of primitive barbarism, really, dating back some 1300 years, roughly.
- But the artifacts lying here were found at this level and date back, uh, 700 years earlier.
- That's the paradox. For the more ancient culture is the more advanced.
- Now, admittedly, many of these objects are unidentified.
- But clearly, they were fashioned by beings with a knowledge of metallurgy.
[...]