The continental distribution in the early Cambrian epoch, 514 million years ago.

The Middle Cambrian (also known as Albertan, Acadian, St. David's, or Saint David's) is the second of three geological epochs of the Cambrian period. It spans the time between 513 ± 2 Ma and 501 ± 2 Ma (million years ago). The strange organisms of the Burgess Shale fossil site lived during this epoch. The Middle Cambrian is divided into two unnamed ICS stages.

See also

• List of fossil sites (with link directory)

References

• GeoWhen Database - Middle Cambrian

 This geochronology article is a stub. You can help Wikipedia by expanding it.