|
Related articles:
Ediacaran
Cambrian explosion
Paleozoic
Burgess Shale
Trilobite
Precambrian
Ordovician
Paleontology
Extinction event
Fossil
Arthropod
Reef
Gondwana
List of fossil sites
Stephen Jay Gould
Wales
Key terms: cambrian ma date sea period land stages ice fossils mass base boundary rocks oman precise rowspan global epochs range extinction marked change middle horizon geology namibia relatively stratigraphy explosion trilobite ediacaran subdivisions excursion stratigraphic ordovician continents cambrian period trace fossils supercontinent cambrian is divided lower boundary of the cambrian Search external links cited by footnotes on Wikipedia page Cambrian: |
|