Re: Dinosaur Groups

["T. Michael Keesey" <mightyodinn@yahoo.com>]

--- Robin Green <xvcleovx@yahoo.com> wrote:
> HI,
>  
>      I have always been into paleontology but did not get into dinosaurs
> untill recently. I am trying to find out exactly how the main dino groups are
> categorized. I have been checking books and internet sites and everyone seems
> to have a different way.

Yep! :)
People disagree about the way they are related, as well as how to classify
them.

> I am just looking for the basic groups like
> theropod, pachycephalosaurs, and whatevers right bellow. Also are there
> groups sauropodomorph and prosauropod and how are they related to sauropod.
> If anyone knows and has time to and would like to tell me please do. My
> e-mail address is xvcleovx@yahoo.com.

A basic, abridged hierarchy that many researchers would agree on, at least in
part: (I'm assuming you are viewing with a monospaced font.)

Dinosauria
|--Ornithischia
|  |--Lesothosaurus
|  `--Genasauria
|     |--Thyreophora
|     |  |--Scutellosaurus
|     |  `--Eurypoda
|     |     |--Stegosauria
|     |     `--Ankylosauria
|     `--Cerapoda
|        |--Heterodontosauridae
|        |--Ornithopoda or Euornthopoda
|        `--Marginocephalia
|           |--Pachycephalosauria
|           `--Ceratopsia
`--Saurischia
   |?-Eoraptor
   |?-Herrerasauridae
   `--Eusaurischia
      |--Sauropodomorpha sensu lato
      |  |--Thecodontosaurus
      |  `--+--Prosauropoda sensu stricto
      |     `--Sauropoda
      |        |--Vulcanodon
      |        `--Eusauropoda
      |           |--Cetiosaurus
      |           |--Mamenchisauridae
      |           `--Neosauropoda
      |              |--Diplodocimorpha
      |              `--Macronaria/Camarasauromorpha
      |                 |--Camarasaurus
      |                 `--Titanosauriformes
      |                    |--Brachiosauridae
      |                    `--Titanosauria
      `--Theropoda/Avepoda
         |?-Coelophysoidea
         `--Neotheropoda
            |--Ceratosauria (=Neoceratosauria)
            `--Tetanurae
               |--Torvosauroidea (=Spinosauroidea)
               `--Neotetanurae (=Avetheropoda)
                  |--Carnosauria (=Allosauroidea sensu lato)
                  `--Coelurosauria
                     |?-Tyrannosauroidea
                     `--Maniraptoriformes
                        |--Ornithomimosauria
                        `--Maniraptora
                           |--+--Oviraptorosauria
                           |  `--Therizinosauria
                           `--Paraves/Eumaniraptora
                              |--Deinonychosauria
                              `--Avialae/Aves
                                 |--Archaeopterygidae
                                 `--Pygostylia/Avebrevicauda
                                    |--Confuciusornithidae
                                    `--Ornithothoraces
                                       |--Enantiornithes
                                       `--Euornithes/Ornithuromorpha
                                          |--Hesperornithiformes
                                          `--Carinatae sensu stricto
                                             |--Ichthyornis
                                             `--Neornithes (=Aves sensu
stricto)
                                                |--Paleognathae
                                                `--Neognathae
                                                   |--Galloanserae
                                                   `--Neoaves

=====
=====> T. Michael Keesey <http://dino.lm.com/contact>
=====> The Dinosauricon <http://dinosauricon.com>
=====> Instant Messenger <Ric Blayze>
=====

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