lunes, 1 de diciembre de 2014

Bright Angel Formation

The Bright Angel Formation is a geologic formation in Arizona. It preserves fossils dating back to the Cambrian period.
See also

List of fossiliferous stratigraphic units in Arizona
Paleontology in Arizona

References

Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 8 July 2014. 

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