Polyonax

Polyonax Temporal range: Late Cretaceous, 66 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Dinosauria
Clade:	†Ornithischia
Clade:	†Neornithischia
Clade:	†Ceratopsia
Family:	†Ceratopsidae
Genus:	†Polyonax Cope, 1874
Species:	†P. mortuarius
Binomial name
†Polyonax mortuarius Cope, 1874
Synonyms
Agathaumas mortuarius (Cope, 1874) Hay, 1901 Triceratops mortuarius (Cope, 1874) Kuhn, 1936

Polyonax (meaning "master over many") was a genus of ceratopsid dinosaur from the late Maastrichtian-age Upper Cretaceous Denver Formation^{[citation needed]} of Colorado, United States. Founded upon poor remains, it is today regarded as a dubious name.