This Piece of Rock In The Grand Canyon Revealed A Vital Piece of History

Allan Krill

The person who finally realized how valuable the collapsed boulders were was a geologist named Allan Krill. As he inspected the boulder, he realized that there was something odd and fascinating about it.

ntnu.edu

Imprinted on the stone was something that predated the dinosaurs. Four years later, a friend of Allan Krill published a paper detailing what made this piece of rock so fascinating and what history it held.