| | MEA592D Dinosaur Osteology: Lecture 4 |
 | | Lesothosaurus with predentary nipper, rotating lower jaws (fundamental ornithischian adaptation |
| | Pisanosaurus is representative of stem ornithischians, and its similarities to saurischians are evidence of proximity to the common ancestor of dinosaurs |
| | Pisanosaurus is representative of stem ornithischians, and after the saurischian material is removed from the type, it closely resembles Lesothosaurus; the common ancestor of dinosaurs is more remote (unstated) |
| www4.ncsu.edu /~rjpatchu/paleobiology/Dino_Osteology/lect4.html (2789 words) |
