Here is a rare Cambrian Trilobite from Nevada that belongs likely to a new Alokistocarid species. It resembles strongly Piochaspis sellata that also occurs in the Chisholm Shale.

Here is a detailed US Trilobite if the species Ampyxina bellatula from the Ordovician Maquoketa Formation of Missouri.

This is a classical US Trilobite if the species Ampyxina bellatula from the Ordovician Maquoketa Formation of Missouri.

Here is a classcal Utah Trilobite of the species Asaphiscus wheeleri from the Wheeler Formation.

This is a Weeks Trilobite double from Utha with two specimens of the species Cedaria minor.

Here is a quite rare and quite large  example of a Dipleura dekayi from the middle Devonian of New York.
 

Here is a nice and inexpensive example of the classic trilobite Eldredgeops rana milleri from the Devonian of New York.

Here is a typical Utah Trilbite of the species Elrathia kingi.

This Utah trilobite is a beautiful specimen of the species Elrathia kingi.
 

This middle Cambrian trilobite from Nevada is a specimen of the species Elrathina antiqua. The trilobite genus Elrathia is almost unknown in Nevada.

Here is a classic Oklahoma Trilobite of the species Homotelus bromidensis.

Here is an agnostid double of the species Hypagnostus parvifrons.

This is an agnostid trilobite of the species Itagnostus interstricta from the Wheeler Shale of Utah. There is a second, juvenile specimen of the same species on the piece.

Here is a nicely 3dimesional preserved agnostid trilobite of the species Itagnostus interstrictus from the Middle Cambrian of Utah.

Here is a nice and detailed Modocia typicalis from the Marjum formation of Utah.

Here is a Modocia weeksensis from the upper Cambrian Weeks formation of Utah

This is a inexpensive specimen of a Nevada Trilobit of the species  Nephrolenellus geniculatus from the Pioche Formation.