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Fossil record?
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Almost 300 million years: Early Cambrian - Late Permian
Large stratigraphic range: Cambrian - Present
Large stratigraphic range: Cambrian - Present
Cambrian - Carboniferous (especially common in Ordovician to Silurian)
Appear in the Cambrian, dominant in the Mesozoic and Cainozoic
Present since, and most abundant during, Palaeozoic
Very long fossil record: Cambrian - Present (useful stratigraphic markers)
Very long fossil record: Cambrian - Present (useful stratigraphic markers)
Author
Anonymous
ID
58782
Card Set
Fossil record?
Description
How long were these fossils around for?
Updated
2011-01-09T16:28:01Z
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