Two Huge Dikelokephalina Trilobites With Echinoderms

This is a pair of huge Dikelokephalina trilobites from the Fezouata Shale. The larger specimen is ventral and 11.5" long while the better preserved, dorsal specimen is 9.5". They are both located on a solid, 22 x 15" slab of shale which also has many internal cast fossils of type of echinoderm. There is only some minor restoration along repaired cracks in the piece. A truly impressive display.

A description of this trilobite can be found at the link below:

Trilobites of the genus Dikelokephalina from Ordovician Gondwana and Avalonia

About Trilobites

Trilobites are an extinct class of marine arthropods that thrived for nearly 270 million years, from the early Cambrian to the end of the Permian period (around 521 to 252 million years ago). They are one of the most successful and diverse groups in the history of life, with over 25,000 described species spanning a wide range of sizes, shapes, and ecological niches. Known for their distinctive, segmented exoskeletons, trilobites provide invaluable insights into the evolutionary history of arthropods and the dynamics of ancient marine ecosystems.

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