Paceyodon

{{Short description|Extinct genus of mammaliaforms}}

{{speciesbox

| name = Paceyodon

| fossil_range = Hettangian
~{{fossil range|201|190}}

| display_parents = 2

| genus = Paceyodon

| parent_authority = Clemens, 2011

| authority = Clemens, 2011

| species = davidi

}}

Paceyodon is an extinct genus of morganucodontan mammaliaform from Early Jurassic deposits of southern Wales, United Kingdom. Paceyodon is known from an isolated molariform that is significantly larger than any morganucodontan molariform yet discovered. It was collected in the Pant Quarry, Vale of Glamorgan. It was first named by William A. Clemens in 2011 and the type species is Paceyodon davidi.{{cite journal |author=William A. Clemens |year=2011 |title=New morganucodontans from an Early Jurassic fissure filling in Wales (United Kingdom) |journal=Palaeontology |volume=54 |issue=5 |pages=1139–1156 |doi=10.1111/j.1475-4983.2011.01094.x |doi-access=free }}