comparemela.com
Home
Live Updates
Earth Notes: Arthropod Tracks : comparemela.com
Earth Notes: Arthropod Tracks
The Grand Canyon is full of footprints, not all of them made by people or four-footed animals. Divots in solid rock show where ancient arthropods walked, long ago.
Related Keywords
Canada
,
,
Grand Canyon
,
Cambrian Explosion
,
Bright Angel Shale
,
comparemela.com © 2020. All Rights Reserved.