High quality trilobite from the Olenellus family, a Nephrolenellus geniculatus from the Pioche Shale. All Olenellus have a most distinctive large cephalon with crescentic eyes, making them very attractive to collectors. Pioche trilobites are very fragile make it very hard to find complete examples. Exceptional quality Nephrolenellus.

Nephrolenellus geniculatus

Lower Cambrian (513 505 mil y)

Pioche Shale Formation, Lincoln County, Nevada

20 mm - 0.8"

Very good