Eiffelia

Eiffelia is a genus of extinct trilobites belonging to the order Asaphida. Fossils of Eiffelia have been found in Cambrian-aged rocks, primarily in North America, particularly in the Burgess Shale of British Columbia, Canada. These trilobites are characterized by their relatively small size, flattened body, and distinctive pygidium (tail shield).

Eiffelia typically possesses a smooth exoskeleton and a simple cephalon (head shield). The cephalon's features, such as the position and size of the eyes, are often used in identifying different species within the genus. The pygidium is often subtriangular or semicircular in shape and lacks prominent spines or ornamentation.

The genus is significant for paleontologists studying the Cambrian explosion, a period of rapid diversification of life on Earth. Eiffelia provides insights into the early evolution and morphology of trilobites and their ecological roles within Cambrian marine ecosystems. Its presence in well-preserved fossil assemblages like the Burgess Shale allows for detailed studies of its anatomy and potential soft-tissue preservation, further enhancing our understanding of Cambrian life.

The name Eiffelia is likely derived from or related to the Eiffel Tower, although the exact reason for this naming convention is not widely documented and may represent a connection known only to the original describing scientist. Further research into the etymology of the name may be required to confirm its origin.