Leonaspis

{{Short description|Genus of trilobites}}

{{Italic title}}

{{Taxobox

| name = Leonaspis

| fossil_range = Late Ordovician to Middle Devonian

| image = Leonaspis and Paciphacops.jpg

| image_caption = Leonaspis williamsi (lower left) with Paciphacops raymondi (upper right)

| regnum = Animalia

| phylum = Arthropoda

| classis = Trilobita

| ordo = Odontopleurida

| familia = Odontopleuridae

| genus = Leonaspis

| genus_authority =

| subdivision_ranks = Species

| subdivision =

}}

Leonaspis is a widespread genus of odontopleurid trilobite that lived from the Late Ordovician to the late Middle Devonian.{{Cite journal|last1=Feist|first1=Raimund|last2=McNAMARA|first2=Kenneth J.|date=September 2007|title=Biodiversity, distribution and patterns of extinction of the last odontopleuroid trilobites during the Devonian (Givetian, Frasnian)|journal=Geological Magazine|volume=144|issue=5|pages=777–796|doi=10.1017/s0016756807003779|bibcode=2007GeoM..144..777F |s2cid=128918534 |issn=1469-5081}} Fossils of various species have been found on all continents except Antarctica.