The
Classifoclado
Ornithischia
`--Genasauria
    |--Thyreophora
    |   `--Eurypoda
    |       |--Stegosauria
    |       |   `--Stegosauridae
    |       `--Ankylosauria
    |           |--Nodosauridae
    |           `--Ankylosauridae
    `--Cerapoda
        |--?Heterodontosauridae
        |--Marginocephalia
        |   |--Pachycephalosauria
        |   |   |=="Homalocephalids"
        |   |   `--Pachycephalosauridae
        |   `--Ceratopia
        |       |--Psittacosauridae
        |       `--Coronosauria
        |           |--Protoceratopidae
        |           `--+--Leptoceratopidae
        |               `--Ceratopoidea
        |                   `--Ceratopidae
        `--Ornithopoda
            |--Hypsilophodontidae
            `--Iguanodontia
                |--Dryosauridae
                `--Ankylopollexia
                    |--Camptosauridae
                    `--Iguanodontoidea
                        |--Iguanodontidae
                        `--Hadrosauroidea
                            `--Hadrosauridae
                               

  
Ornithischia is the home to many odd & fascinating dinosaurs. they started out as little three-foot long bipedal creatures, and evolved into a diverse group of awesome creatures!