Dinosauria The MRCA of Saurischia and Ornithischia, and its descendants
*** Eoraptor The most basal known dinosaur
- Saurischia
- Sauropodomorpha
+ Saurischia Everything closer to Megalosaurus than to Iguanodon
+ Sauropodomorpha Sauropods and their ancestors and close relatives
Brontosauria
Plateosauria
Massospondylidae
Yunnanosaurinae
*** Yunnanosaurus
- Sauropoda
+ Sauropoda Huge, long-necked herbivores
Eusauropoda
- *** Jobaria
+ *** Jobaria A surprisingly primitive Early Cretaceous form
Neosauropoda
- Diplodocimorpha
+ Diplodocimorpha Diplodocus, Apatosaurus, Seismosaurus and kin
Rebbachisauridae
Rebbachisaurinae
- *** Rebbachisaurus
+ *** Rebbachisaurus Had a sail on its back
Macronaria
Camarasauromorpha
Titanosauriformes
Brachiosauridae
- *** Sauroposeidon
+ *** Sauroposeidon The tallest known dinosaur (18m)
Titanosauria
Eutitanosauria
- *** Argentinosaurus
- Theropoda
+ *** Argentinosaurus The heaviest known dinosaur (100 tonnes)
+ Theropoda Bipedal carnivores
Neotheropoda
- Ceratosauria
+ Ceratosauria May be polyphyletic if neoceratosaurs are tenanuran
Coelophysoidea
Coelophysidae
Coelophysinae
- *** Dilophosaurus
+ *** Dilophosaurus Had a pair of long crests on its nose
Neoceratosauria
*** Xenotarsosaurus
Tetanurae
- Spinosauria
+ Spinosauria Large carnivores with sails on their backs
Spinosauridae
Spinosaurinae
Irritatorini
- *** Irritator
+ *** Irritator
Avetheropoda aka. Neotetanurae
Carnosauria Previously used just to mean "large theropods"
*** Fukuiraptor
Arctometatarsalia
Ornithomimosauria
*** Harpymimus
- Tyrannosauroidea
+ Tyrannosauroidea Includes early form Eotyrannus
Tyrannosauridae
Tyrannosaurinae
- Tyrannosaurini
+ Tyrannosaurini Could be defined as {Tyrannosaurs+Tarbosaurus}
*** Tyrannosaurus
Maniraptora
- Oviraptorosauria
+ Oviraptorosauria Includes Caenagnathidae
Oviraptoridae
- *** Oviraptor
- Therizinosauria
+ *** Oviraptor Some specimens found brooding their nests
+ Therizinosauria Truly freaky long-necked, huge-clawed fatsos
Therizinosauroidea
Therizinosauridae
*** Nanshiungosaurus
Paraves
Eumaniraptora
Deinonychosauria
- Troodontidae
+ Troodontidae Highest encephalisation quotient on known dinos
*** Byronosaurus
Dromaeosauridae
Velociraptorinae
- *** Velociraptor
+ *** Velociraptor Much smaller in real life than in Jurassic Park
Avialae
- Aves
+ Aves Birds, including modern birds
Metornithes
- Alvarezsauria
+ Alvarezsauria Short, stong args; long, gracile legs. Weird
Alvarezsauridae
- Mononykinae
+ Mononykinae Hands had only a single, spike-like finger
*** Parvicursor
- Ornithischia
+ Ornithischia Everything closer to Iguanodon than to Megalosaurus
Genasauria
- Thyreophora
+ Thyreophora The armoured dinosaurs, ankylosaurs and stegosaurs
Thyreophoroidea
Eurypoda
- Stegosauria
+ Stegosauria Single or double row of plates down the back
Stegosauridae
- *** Kentrosaurus
- Ankylosauria
+ *** Kentrosaurus Had spikes on its back instead of plates
+ Ankylosauria Heavily armoured, above and below
*** Minmi
- Cerapoda
- Marginocephalia
+ Cerapoda Defined as {Triceratops+Iguanodon}
+ Marginocephalia Defined as {Triceratops+Pachycephalosaurus}
Ceratopsia
- Neoceratopsia
+ Neoceratopsia Everything closer to Triceratops than to Psittacosaurus
*** Udanoceratops
Coronosauria
Ceratopsoidea
Ceratopsomorpha
- *** Zuniceratops
- Pachycephalosauria
+ Ceratopsidae {Chasmosaurinae+Centrosaurinae}
+ *** Zuniceratops
+ Pachycephalosauria Thick-headed, wide-bodied herbivorous bipeds
*** Wannanosaurus
- Ornithopoda
- *** Qantassaurus
+ Ornithopoda The least interesting of all the dinosaur groups
+ *** Qantassaurus A profoundly dull basal ornithopod
Euornithopoda
Iguanodontia
Euiguanodontia
Dryomorpha
Ankylopollexia
Styracosterna
- *** Lurdosaurus
+ *** Lurdosaurus Looks a lot like a fat Iguanodon
Iguanodontoidea
Hadrosauroidea
Hadrosauridae
- Euhadrosauria
- Lambeosaurinae
+ Euhadrosauria Lambeosaurs (crested) + Hadrosaurs (not)
+ Lambeosaurinae The least dull of all the ornithopods
Lambeosaurini
*** Corythosaurus