Anomalocaris (odd shrimp): an early sea
creature
Many
spectacular animals that lived over 500 million years ago are now
extinct. The Burgess Shale Fauna fossils, discovered in Canada at
the turn of the century, were preserved in mud that retained
remarkable detail of both hard and soft parts of a variety of sea
creatures.
Buried alive
The Burgess Shale animals lived on a muddy sea floor
in shallow water. A mud slide probably swept them into deeper
waters, where they were buried alive in oxygen-starved
sediments.
