DinoPhylo Made Easy - #1 Marginocephalia

Start of a new project. The purpose is to give a super simplified reference for dinosaur phylogeny. It'll mostly focus on -idae level clades wherever possible.

Here is the first, the hard headed marginocephalians.
Genus featured are (right to left):
Triceratops
Protoceratops
Prenoceratops
Leptoceratops
Psittacosaurus
Stegoceras

Feel free to spread around as a reference.

Skeletal References:
Scott Hartman ([link])
Jaime A. Headden ([link])
Unknown artist - Indiana Children's Museum ([link])
Unknown artist - Melbourne Museum ([link])

Phylogeny from Thomas Holtz' syllabus: [link]