The Classifoclado
Dinosauria
|--Saurischia

|   |--?Herrerasauridae
|   |--Sauropodomorpha
|   |   `--"Brontosauria"
|   |        |--Prosauropoda
|   |        |   `--Plateosauridae
|   |        `--
Sauropoda
|   |            |--?Melanorosauridae
|   |            `--Clade(
Saltasaurus + Vulcanodon)
|   |                `--Eusauropoda
|   |                    |=="Cetiosaurids"
|   |                    |--Mamenchisauridae
|   |                    `--Clade(
Saltasaurus > Barapasaurus)
|   |                        `--Neosauropoda
|   |                            |--
Diplodocoidea
|   |                            |   |--Rebbachisauridae
|   |                            |   `--Flagellicaudata
|   |                            |       `--Diplodocidae
|   |                            |           |--Dicraeosaurinae
|   |                            |           `--Diplodocinae
|   |                            `--
Macronaria
|   |                                `--Titanosauriformes
|   |                                    |-Brachiosauridae
|   |                                    `--
Titanosauria
|   |                                        `--Saltasauridae
|   `--
Theropoda
|       `--Avepoda
|           |--Coelophysoidea
|           |   `--Coelophysidae
|           `--Averostra
|               `--Neotheropoda
|                   |--
Ceratosauria
|                   |   `--Abelisauria
|                   |       |--Noasauridae
|                   |       `--Abelisauridae
|                   `--
Tetanurae                      
|                       |--Megalosauroidea
|                       |   |--?Megalosauridae
|                       |   `--Spinosauridae
|                       `--Neotetanurae
|                           |--
Carnosauria
|                           |   `--Allosauroidea
|                           |       |--Allosauridae
|                           |       |--Carcharodontosauridae
|                           |       `--Sinraptoridae
|                           `--
Coelurosauria
|                               |--?Coeluridae
|                               |--?Compsognathidae
|                               |--Sinosauropterygidae
|                               |--?
Tyrannosauroidea
|                               |     `--Tyrannosauridae
|                               `--Maniraptoriformes
|                                   |--
Arctometatarsalia
|                                   |   `--Ornithomimosauria      
|                                   |       `--Ornithomimidae
|                                   `--
Maniraptora
|                                       |--?Alvarezsauridae
|                                       |--
Enigmosauria
|                                       |    |--Oviraptorosauria
|                                       |    |   |-
-?Avimimidae
|                                       |    |   `--Caenagnathoidea
|                                       |    |       |--Caenagnathidae
|                                       |    |       `--Oviraptoridae
|                                       |    `--?Therizinosauria
|                                       |          `--Therizinosauridae
|                                       `--Paraves
|                                           `--Eumaniraptora
|                                               |--
Deinonychosauria
|                                               |   |--"Dromaeosauroidea"
|                                               |   |    |--Microraptoria
|                                               |   |    `--Dromaeosauridae
|                                               |   `--Troodontidae
|                                               `--Avialae   
|                                                   |--Archaeopterygidae
|                                                   `--Pygostylia
`--
Ornithischia
As you see, the cladogram here represents the Saurischia. These critters were a diverse group of animals with two main groups: Theropoda the meat-eaters, & Sauropodomorpha the long-necks.
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