Rare Phacops rana norwoodensis Trilobite from Iowa

Name: Phacops rana norwoodensis

Trilobites Order Phacopida, Suborder Phacopina, Superfamily Phacopoidea, Family Phacopidae

Geologic Time: Devonian

Size: 32mm

Fossil Site: Cedar Valley Formation, Johnson County, Iowa

You will be hard pressed to find a more beautiful specimen of this rare species here exhibiting how trilobites could enroll into a defensive ball or capsule due to the flexible articulation of the thoracic segments.

click fossil pictures to enlarge

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