Cambrian paleontology and geology represent a critical juncture in Earth’s history, marked by the rapid diversification of animal life and profound shifts in marine geochemistry. The early Cambrian ...

Walcott, Charles D. 1913. Cambrian Geology and Paleontology II: No 12--Cambrian formations of the Robson Peak District, British Columbia and Alberta, Canada. Washington, DC: Smithsonian Institution.

MADISON – The oceans teemed with life 600 million years ago, but the simple, soft-bodied creatures would have been hardly recognizable as the ancestors of nearly all animals on Earth today. Then ...

Considering the fossils of the Cambrian, the oldest fossil-bearing rocks known during his time, Charles Darwin wrote the following in the 6th edition of On the Origin of Species; ... it cannot be ...

A new analysis of geologic history may help solve the riddle of the "Cambrian explosion," the rapid diversification of animal life in the fossil record 530 million years ago that has puzzled ...

Abstract Isotopic ages for the Middle Cambrian–Late Cambrian are few because formations of the appropriate age combining diagnostic fossils and rocks datable by precise isotopic techniques are not ...

A sudden explosion of new life-forms hundreds of millions of years ago may have been triggered by a major tectonic shift, new research shows. About 530 million years ago, the Cambrian explosion ...

Conodonts have been recovered from two widely separated sections in the Canadian Arctic Islands: one in central Ellesmere Island exposing the Parrish Glacier and Copes Bay formations and the other in ...