Palæos:		Unit 320: Ornithischia
The Vertebrates		Cladogram

Ornithischia: Cladogram

DINOSAUROMORPHA
|--+--SAUROPODOMORPHA
|  `--THEROPODA
Ornithischia
|--Thyreophora
|  |--Stegosauria
|  `--Ankylosauria
`--Cerapoda
   |--Ornithopoda
   |  |--Hypsilophodontidae
   |  `--Hadrosauridae
   `--Marginocephalia
      |--Pachycephalosauria
      `--Ceratopsia

Ornithischia X MH, Th, ToL
|--Fabrosauridae •X
`--Genasauria X
   |--Thyreophora X 
   |  |--Echinodon •X
   |  `--+--Scutellosaurus •X
   |     `--Eurypoda X
   |        |--Stegosauria X Th, MH
   |        |  |--Huayangosauridae X
   |        |  |  |--Emausaurus •X 
   |        |  |  `--Huayangosaurus •X
   |        |  `--Stegosauridae •X
   |        |     |--Dacentrurus •X
   |        |     `--Kentrosaurinae X
   |        |        |--Kentrosaurus •X
   |        |        `--+--Chialingosaurus •X
   |        |           `--+--Chungkingosaurus •X
   |        |              `--Stegosaurinae X 
   |        |                 |--Lexovisaurus •X
   |        |                 `--+--Tuojiangosaurus •X
   |        |                    `--+--Stegosaurus •X
   |        |                       `--Wuerhosaurus •X
   |        `--Ankylosauromorpha X ToL
   |           |--Scelidosauridae •X
   |           `--+--Minmi •X
   |              `--Ankylosauria X ToL, MH, Th
   |                 |--Ankylosauridae •X Th, MH, ToL
   |                 `--Nodosauridae •X MH, ToL
   `--Cerapoda X
      |--Ornithopoda X Th, MH
      |  |--Heterodontosauridae •X MH 
      |  `--+--Hypsilophodontidae X
      |     |  |--Leaellynasaura •X
      |     |  |--Thescelosaurus •X
      |     |  `--+--Zephyrosaurinae •X
      |     |     `--+--Othnieliinae •X
      |     |        `--Hypsilophodontiniae •X
      |     `--Iguanodontia X MH
      |        |--"Muttaburrasaurinae" •X
      |        `--+--Tenontosauridae X
      |           |  |--Tenontosaurus •X 
      |           |  `--Rhabdodon •X
      |           `--+--Dryosauridae •X
      |              `--+--Iguanodontidae X Th
      |                 `--Hadrosauroidea X MH   
      |                    |--Ouranosaurus •X
      |                    `--+--Nanyangosaurus •X
      |                       `--+--Altirhinus •X
      |                          `--Hadrosauridae X Th
      |                             |--Hadrosaurinae •X MH
      |                             `--Lambeosaurinae •X Th, MH
      `--Marginocephalia X
         |--Pachycephalosauria X Th, MH
         |  |--Homalocephalidae •X
         |  `--Pachycephalosauridae •X 
         `--Ceratopsia X DC, Th, MH
            |--Psittacosauridae •X MH
            `--+--Protoceratopsidae •X
               `--+--Centrosaurinae •X Th
                  `--Ceratopsinae •X 

checked ATW060107