Measurement:
28 mm diameter

Featured is a Silurian Trilobite Calymene breviceps from the famous Waldron Shale in St. Paul, Indiana.  This is a fascinating piece. There are two trilobites enrolled into each other.  One is complete with the right free cheek easily visible, the left cheek cannot be seen and may or may not be present.  The second specimen does not possess the cephalon. 
 Calymene from the Waldron are becoming harder to find, and most public sites have been closed to collecting.

  This specimen was obtained from an old collection and then professionally reprepared by Marc Behrendt, and has no restoration to the bug or matrix.

The pictures illustrate the quality of this piece.

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