Bellacartwrightia is a relatively uncommon genus of phacopid trilobite, found in the mid-Devonian Hamilton Group of New York state, mainly in strata exposed near Lake Erie just west of Buffalo.

This trilobite is usually about 1.5" to 2" long.

A very similar trilobite from the Devonian of Morocco is still sold as Metacanthina, but considerable research is still being done on Moroccan trilobites.

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