Triarthrus eatoni:

Late Ordovician. 

Utica Shale.

Little Falls Area. New York. 

Size: The fully complete one is 5/8” in length. 

All the other partials above it are negatives

and positives

Plate size is 4 x 4 1/4”

This complete specimen exhibits excellent preservation, 

fully inflated, with the axial nubs in place. The actual color

is black on black, not this lighter color. My camera struggles 

with this dark black, so please keep that in mind.

No restoration or enhancement. On the reverse side is a 

¾” nautiloid.

Unfortunately, if Canadian or any country with super high 

tariffs, please do not bid on this auction.

International Postage Rate: $18.00

Tariffs or Vats will vary according to country.