Foxaspis

Foxaspis is an extinct genus of trilobite belonging to the order Asaphida. These trilobites lived during the Ordovician period. Foxaspis fossils have been found in regions of North America.

Typically, Foxaspis exhibits characteristics common to Asaphid trilobites, including a relatively flat cephalon (head shield) and pygidium (tail shield). The cephalon usually possesses genal spines, though the length can vary between species and individuals. The thorax is composed of multiple segments.

Foxaspis is often studied in the context of Ordovician biodiversity and paleoecology. As a fossil, it provides valuable information regarding the evolution and distribution of trilobites during a significant period in Earth's history. The specific morphological details of Foxaspis, in comparison with related genera, contribute to a broader understanding of trilobite taxonomy and phylogeny. Its presence in certain geological formations can also aid in biostratigraphy, the use of fossils to date and correlate rock layers.