The synapsid reptile Placerias (plu • SAYR • ee • us) was one of the largest herbivores of the Late Triassic. Herds of Placerias browsed on the Triassic floodplains. Placerias became extinct during the Triassic.
Did you know that Dicynodont means "two dog teeth"?
See a reconstruction of Placerias here.