clade of dinosaurs (fossil)
They are divided into these groups:
- Various early herbivores which could be quadrupedal or bipedal. Examples: the lightly armoured: Scutellosaurus, and Scelidosaurus.
- Gierliński, Gregard 1999. Tracks of a large thyreophoran from the Early Jurassic of Poland. Acta Palaeontologica Polonica 44.