Acastella sp.
Trilobite
Lower Silurian
Revesto Sbsvyte Formation
Kamyanets-Podolskiy Region, Kitajgorod, Ukraine

17mm trilobite on 72mm matrix.

Arthropod.

Acastella is a genus of trilobite that lived during the Silurian and Devonian and had a wide distribution.  Specimens have been found in Europe, North Africa, Australia, and New Zealand.

Study specimen of an interesting trilobite.