Age: Ordovician
Formation: Farr

Receptaculites represents the fossil remains of algae. They lived throughout North America from the lower Ordovician through the Permian. Specimens found are usually globular to platter shaped, nd measure from a few inches to over a foot (30cm) across. The surface is covered by rectangular plates arranged in intersecting sets of clock-wise and counterclock-wise patterns. To the left, an artists rendition of Receptaculites. 2b, 2c and 2d are close-ups of the columner nature of the algae and close-ups of the surface.

To your right, an excellent sample of Receptaculites

Below, Receptaculites insitu

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