Calymene niagarensis Trilobite Fossil

With its beautifully defined exoskeleton, distinctive segmented body, and compact three-dimensional form, this Calymene niagarensis trilobite is a fascinating example of the ancient marine life that inhabited Earth's Silurian seas.

Dating to the Middle to Late Silurian Period approximately 438 to 410 million years ago, this specimen comes from the Grafton Formation near Waverly, Illinois. Calymene trilobites are particularly recognized for their prominent head shields, well-defined thoracic segments, and ability to enroll their bodies for protection. These fascinating marine arthropods inhabited ancient seafloors, where they likely moved across soft sediments in search of food.

This specimen measures approximately 1 inch long and is preserved without its surrounding rock matrix, allowing its intricate anatomy to be appreciated from multiple angles. Its natural coloration, raised central axis, and deeply defined body segments highlight the trilobite's distinctive appearance. The detailed three-dimensional preservation makes it an attractive addition to any fossil collection and a wonderful example of Illinois' rich Silurian fossil record.

A Certificate of Authenticity from Tyrannostorus is included.

Specimen Details

Fossil: Calymene niagarensis Trilobite
Geological Age: Middle to Late Silurian
Approximate Age: 438–410 million years
Formation: Grafton Formation
Locality: Waverly, Illinois, USA
Trilobite Length: Approx. 1 inch
Matrix: None (freestanding specimen)
Certificate of Authenticity: Included

You will receive the exact specimen pictured.

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