Trilobite Fossil: Triarthrus eatoni from the Upper Ordovician

Posted: 2025-06-03 15:12:07 UTC

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This article contains some claims that remain unverified. While much of the content may be accurate, exercise care when relying on this information.

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2025-06-03 15:12:22 UTC

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TL;DR;

This post showcases a fossil of Triarthrus eatoni, a trilobite from the Upper Ordovician period, found in New York, displaying its biramous appendages and antennae preserved as pyrite.

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Fossil discovery of Triarthrus eatoni

Preservation of biramous appendages and antennae as pyrite

Geological context: Frankfort Shale, Upper Ordovician period

Trilobite Fossil: Triarthrus eatoni from the Upper Ordovician

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