Phacops Trilobite

Phacops Trilobite

Phacops Trilobite.
Phacops Trilobite. This Trilobite has an Holochroal Eye design, found in all orders of trilobites. Trilobites were similar to the modern day Wood Louse only sea dwellers. They came in many different sizes ranging from 1″ inch to around 1 metre in length.

Size of the Trilobite 2 1/2″ x 1 1/2″ inches.

Trilobites had compound eyes (as seen in the image left) each, a unit comprising many lenses made from Calcite Crystal, developed through many millions of years. Early species a sub order Agnostida from the early Cambrian Period 520 million years ago were eye-less.

The group Phacopida ranged from the late Cambrian Period Р500 million years ago to the late Devonian Period Р380 million years.

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