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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