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

This is a beautiful rolled  trilobite of the species Eldredgeops rana from the Devonian of New York. 

Here is an inexpensive specimen of a 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 inexpensive specimen of the trilobite species Triarthrus beckii from the Ordovician period in the state of New York. Notably or regrettably, the hypostome of this trilobite is visible. It is feature that is otherwise difficult to show.