Description
Up for sale is a RARE and authentic Calymene celebra trilobite fossil, a classic species from the Niagaran Limestone of the Joliet Formation, found near Grafton, Illinois, USA. This remarkable trilobite dates back to the Silurian Period, approximately 430 million years ago, and is a prized fossil for both collectors and educators.
As with all our listings, this is a 100% genuine fossil and comes with a Certificate of Authenticity. The photo shows the exact specimen you will receive. The cube in the image equals 1cm. Please refer to the photo for full dimensions.
Geological & Taxonomic Information:
- Fossil Type: Trilobite (extinct marine arthropod)
- Species: Calymene celebra
- Family: Calymenidae
- Order: Phacopida
- Class: Trilobita
- Geological Formation: Joliet Formation (Niagaran Limestone Group)
- Geological Period: Silurian (approx. 430 million years ago)
- Location: Grafton, Illinois, USA
- Depositional Environment: Warm, shallow marine reef and lagoonal settings typical of the Silurian Midwestern carbonate platforms
Morphological Features:
- Distinctive compact and enrolled body posture, often preserved curled as a defense mechanism
- Well-defined glabella (head region) and segmented thorax
- Characteristic surface texture and segment articulation of Calymene celebra
- Fossil is preserved in matrix with good surface relief and natural contrast
Scientific Significance: Calymene celebra is the state fossil of Wisconsin and one of the most iconic North American trilobites. Known for its well-preserved, easily recognizable form and abundance in Silurian carbonate rocks, it provides key insights into early arthropod morphology and Silurian reef ecosystems.
Collector & Display Value:
- A highly sought-after trilobite from a classic American locality
- Great educational specimen for teaching about Paleozoic marine life
- Excellent condition with characteristic features well preserved
Why Buy from Us?
- Every specimen is 100% authentic and responsibly sourced
- Comes with a Certificate of Authenticity
- Professionally selected, photographed, and prepared
Add a rare and historically significant Calymene celebra trilobite fossil to your collection—an exceptional example of Silurian life from the heart of ancient America.
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