Phacops Rana milleri or crassituberculata An absolutely exquisite and perfect example of this increasingly hard to find species.
A must have species for the collector of American or Mid-Western trilobites. .
Light chocolate color.
This is a very fine, 3-D enrolled examples of a trilobite rarely offered for sale, with few in such a pristine, undistorted shape..
Enrollment was a defensive response to predators.
ORIGIN :USA.
SIZE: 4cm (wide) x 3cm( enrolled) x 2+cm WEIGHT:33gr.
Trilobite name from Tri-lobe-ite ,3 longitudinal divisions of their body..
They appeared aproximately570 million years ago, and they.
lived until their extinction 240million years ago..
Quite a long time..