100 million years old?

by Mary A.
(Model, Colorado)

Cretaceous fossil?

Cretaceous fossil?

Found these in an arroyo in southeastern Colorado. I am really interested in what exactly they are.

Comments for 100 million years old?

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Cretaceous Fossil
by: Douglas


Assuming you found this near Model it is from the Cretaceous Period. which does make it 65 to 100 million years old. I can't identify any fossils on this piece but it looks like there may be more than one.

You can learn more about the Cretaceous Period here:


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