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Re: Dinosauricon Phylogeny: in progress

I've reconstructed the trees in order to make clear what I'm talking about.

--Ornithopoda
|--Othnielia
`--+--Zephyrosaurus
`--Euornithopoda
|--Hypsilophodon
`--Iguanodontia
|?-Thescelosaurus
`--Euiguanodontia
|--+--Gasparinisaura
| `--Parksosaurus
`--Dryomorpha
|--Dryosaurus
`--Ankylopollexia
|--Camptosaurus
`--Styracosterna/Hadrosauriformes
|?-Probactrosaurus
|--Iguanodon
`--Hadrosauroidea
|--Ouranosaurus
`--+--Eolambia
`--+--Bactrosaurus
|--Protohadros
`--+--Telmatosaurus
`--Hadrosauridae
|--Lambeosaurinae
| |--Tsintaosaurus
| `--+--Jaxartosaurus
| `--+--Amurosaurus
| `--+--Parasaurolophini
| | |--Charonosaurus
| | `--Parasaurolophus
| `--Lambeosaurini
| |--Lambeosaurus
| `--+--Corythosaurus
| |--Hypacrosaurus
| `--Olorotitan
`--Hadrosaurinae
|--Maiasaura
`--+--Hadrosaurini
| |?-Hadrosaurus
| `--Gryposaurus
`--Edmontosaurini
|--Edmontosaurus
`--Saurolophus

1. Why is _Thescelosaurus_ an iguanodontian?
2. Why is _Parksosaurus_ the sistergroup to _Gasparinisaura_?
3. Where are _Draconyx_, _Altirhinus_, _Brachylophosaurus_, _Prosaurolophus_, _Dysalotosaurus_, _Yandusaurus_, _Orodromeus_, and all those other ornithopods, especially the "hypsilophodont"-grade ones...?

--Ceratopsia
     |--Psittacosaurus
     `--Neoceratopsia/Ceratopsoidea
         |--Leptoceratopsidae
         |  |?-Asiaceratops
         |  `--+--Montanoceratops
         |      `--+--Leptoceratops
         |          `--Udanoceratops
         `--Coronosauria
             |--Protoceratops
             `--Ceratopsomorpha
                 |--Zuniceratops
                 `--Ceratopsidae
                     |--Centrosaurinae
                     |  |--Centrosaurus
                     |  `--Pachyrhinosaurini
                     |      |--Einiosaurus
                     |      `--Pachyrhinosaurus
                     `--Seratopsinae
                         |--+?-Ceratops
                         |  `--Chasmosaurus
                         `--+--Anchiceratops
                              `--+--Torosaurus
                                   `--Triceratops

Where's _Liaoceratops_, _Styracosaurus_, and _Chaoyangsaurus_?

--Apatosaurinae
     |--Eobrontosaurus
     `--+--Apatosaurus
         `--Brontosaurus

What supports _Brontosaurus_ being a separate species?

--Allosauroidea
     |--Acrocanthosaurus
     |--Neovenator
     |--Sinraptoridae
     |  |?-Gasosaurus
     |  |?-Metriacanthosaurus
     |  |--Sinraptor
     |  `--Yangchuanosaurus
     |--Allosauridae
     |  |?-Antrodemus
     |  `--Allosaurus
     `?-Carcharodontosauridae
         |--Carcharodontosaurus
         `--Giganotosaurus

Why are _Neovenator_ and _Acrocanthosaurus_ not carcharodontosaurines or allosaurines?

--Troodontidae
    |?-Koparion
    `--+--Sinovenator
        `--+?-Borogovia
            |?- Tochisaurus
            |--Byronosaurus
            |--Sinornithoides
            `--+?-Troodon
                |--Saurornithoides
                `--Stenonychosaurus

Why is _Stenonychosaurus_ a separate taxon from _Troodon_?



Nick Gardner

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