This is an automated archive made by the Lemmit Bot.

The original was posted on /r/science by /u/sciencealert on 2025-07-23 18:15:28+00:00.

Original Title: A newly discovered batch of fossils in the Grand Canyon, laid down just 3 million years after the Cambrian Explosion, shed new light on the little-understood evolutionary trends that directly followed the famous event