An unassuming rock layer in the Grand Canyon just exposed a fossil secret that changes everything we thought we knew.

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Five hundred million years ago, a larva this small swam in the oceans of the Cambrian Period, its tiny form supporting a ...

The Paleozoic era began 530 million years ago when the Earth woke up from an ice age. This era lasted for 289 million years, ...

Grand Canyon fossils in the Bright Angel formation reveal 500M-year-old animals with dual feeding structures, reshaping ...

(CN) — New archeological findings from the Grand Canyon have shed light on what life was like there during the Cambrian period, roughly 500 million years ago, long before the Colorado River cleaved ...

At Ancient Origins, we believe that one of the most important fields of knowledge we can pursue as human beings is our beginnings. And while some people may seem content with the story as it stands, ...

The Cambrian Explosion, a crucial turning point in Earth’s evolutionary history, traditionally dates back to around 530 million years ago. This event marked the rapid appearance of many animal phyla ...

A newly described species from the Burgess Shale had three eyes, clawed limbs, and a tail full of gills—plus internal organs preserved in stunning detail. Reading time 3 minutes A newly described ...

Cambrian Period creatures known as sea moths seemed alien because of their additional eye, but a study finds anatomical features more in line with modern animals. An artist’s impression of Mosura ...