num_pages: 168
description: In 1909, a discovery was made in southwestern Canada that turned out to be the richest fossil record yet found from the Cambrian Era. Slides of soft mud had covered a single area rather quickly, then hardened to form what is known as the Burgess Shale. Trapped in this formation were hundreds of well-preserved invertebrates that had lived from 500 million to over 600 million years ago. This book contains essays by well known specialists in the archaeological geology field. Many pictures and drawings
language: English
title: The Burgess Shale
titlecomplete: The Burgess Shale
ratings_count: 3
publisher: Yale Univ Pr