Here is an inexpensive specimen of a New York trilobite of the species Bumastus ioxus from the classic Rochester Shale.

Here is a beautiful and fully prone trilobite of the species Eldredgeops rana from the Devonian of New York.

This is a beautiful trilobite of the species Triarthrus beckii from the Utica shale of New York.

Here is a classic Triarthrus eatoni from the Utica Shale of New York.
The trilobite itself is about 19 mm long.