Despite the partially detached pygidium this is a good example of the species and is my only Silurian member of the Acastidae. The eyes are a very close match for Acastoides henni but that is a Devonian trilobite, so this may be an undescribed species.
In the background of the second image is a partial pygidium of a Dalmatid trilobite.
Image Files
In addition to viewing the images on this page, you have the option to download the detailed (and large) image files, or to display the detailed files in your browser. (Refer to the buttons below each image.)