''Bellacartwrightia'' is a relatively uncommon genus of phacopid

trilobite Trilobites (; meaning "three lobes") are extinct marine arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the ...

, found in the mid-

Devonian The Devonian ( ) is a geologic period and system of the Paleozoic era, spanning 60.3 million years from the end of the Silurian, million years ago (Mya), to the beginning of the Carboniferous, Mya. It is named after Devon, England, w ...

Hamilton Group of

New York state New York, officially the State of New York, is a U.S. state, state in the Northeastern United States. It is often called New York State to distinguish it from its largest city, New York City. With a total area of , New York is the List of U.S. ...

, mainly in strata exposed near

Lake Erie Lake Erie ( "eerie") is the fourth largest lake by surface area of the five Great Lakes in North America and the eleventh-largest globally. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and therefore also has t ...

just west of

Buffalo Buffalo most commonly refers to: * Bubalina, including most "Old World" buffalo, such as water buffalo * Bison, including the American buffalo * Buffalo, New York Buffalo or buffaloes may also refer to: Animals * Bubalina, a subtribe of the tr ...

. 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.

References

*Brett, Carleton, et al., ''Trilobites of New York''. Rochester: Rochester University Press, 2003. Devonian trilobites of North America Acastidae Fossils of the United States {{Phacopida-stub