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Silesaurus was, as you might expect, a silesaurid, which lived during the Late Triassic of Poland. A slender, quadrupedal dinosauriform that sat very close to the origin of dinosaurs, but is usually considered to be just outside the group. Some researchers think silesaurs might instead be the most basal ornithischian dinosaurs, which would significantly impact the base of the dinosaur family tree, but this dispute will have to play out in the scientific literature. Everyone agrees that Silesaurus bore a beak at the tip of its lower jaw, hinting at a plant-rich or omnivorous diet.
