Clade placed with the Dinosauria that is one of the two defining all dinosaurs. Characterized by a hip arrangement that has the pubis together with the ischium and pointing posteriorly.

An order of the dinosaurs.

extinct terrestrial reptiles having birdlike pelvises: armored dinosaurs (thyreophorans); bone-headed and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)