Devonian Phacops rana milleri Trilobite from Ohio

Name: Phacops rana milleri

Class Trilobita, Trilobite Order Phacopida, Suborder Phacopina, Family Phacopidae

Geologic Time: Devonian

Size: 36m

Fossil Site: Lucas County, Ohio

A large and pristine example of popular trilobite from Ohio. The Ohio Phacops trilobites are particularly well known for Schizochroal eyes that are found only in some Phacopida, those of Suborder Phacopina. This type of trilobite eye typically has fewer lenses, but they are much larger. Each lens is separated and has an individual cornea. The picture attests to the unusual "crystal eyes" of this Phacopida and their superb preservation.

Click to enlarge

Fossil Museum Navigation:
Geological Time Paleobiology Geological History Tree of Life
Fossil Sites Fossils Evolution Fossil Record Museum Fossils