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 something ...

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 ...

The peculiar Cambrian object known as Brooksella, studied for more than a century, may never have been a fossil at all. New ...

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 ...

The Cambrian Period is the first period of the Phanerozoic Eon of our planet Earth and witnessed the explosive appearance of the metazoans, representing the beginning of the modern earth-life system ...

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 ...

Five hundred and forty million years ago, during the Cambrian period, life suddenly went nuts. 'Blossomed' is far too mild a word: instead, geologists call this sudden diversification an 'explosion.' ...

The early Ordovician conglomerates of the lower St. Lawrence valley yield numerous fossiliferous boulders carrying Lower, Middle and Upper Cambrian faunas. In this paper the Lower Cambrian trilobites, ...

(Continued from page 17) WHAT then was the value and the significance of the Silurian sections of Murchison, when examined in the light of the results of the Government surveyors? The Llandeilo rocks, ...