Advertisement.

EnchantedLearning.com is a user-supported site.
As a bonus, site members have access to a banner-ad-free version of the site, with print-friendly pages.
Click here to learn more.

ad
(Already a member? Click here.)


ZoomDinosaurs.com
What are Taxonomy and Cladistics How Are Dinosaurs Classified? Dinosaur Genera Not Dinosaurs, but Old and Interesting
Major Dinosaur Families Saurischian Dinosaurs
"Lizard-Hipped"
Ornithischian Dinosaurs
"Bird-Hipped"
Dinosaur Cladogram

A cladogram of reptilia

Reptilia cladogram


Cladogram: Ornithodira (Dinosaurs, Pterosaurs, Birds, etc.)

  • Ornithodira
    1. Lagosuchus
    2. Pterosauria
    3. Dinosauria
      1. Saurischia
        1. Sauropodomorpha
          1. Prosauropoda(?)
            1. Thecodontosaurus
              1. Anchisaurus
                1. Massospondylus
                2. Yunnanosaurus
                      1. Plateosaurus
                      2. Lufengosaurus
                    1. Coloradisaurus
                  1. Sellosaurus
                    1. Blikanasaurus
                      1. Melanorosaurus
                        1. Riojasaurus
                        2. Camelotia
          2. Sauropoda
            1. Vulcanodon
              1. Barapasaurus
                1. Shunosaurus
                  1. Patagosaurus
                    1. Datousaurus
                      1. Omeisaurus
                        1. Haplocanthosaurus
                        2. Camarasaurs and Titanosaurs
                          1. Camarasaurs
                            1. Brachiosauridae
                              1. Brachiosaurus
                              2. Ultrasauros
                            2. Camarasauridae
                              1. Euhelopus
                                1. Opisthocoelicaudia
                                2. Camarasaurus
                          2. Titanosaurs
                            1. Diplodocidae
                              1. Diplodocus
                              2. Apatosaurus
                              3. Barosaurus
                              4. Dicraeosaurus
                              5. Nemegtosaurus
                              6. Quaesitosaurus
                              7. Mamenchisaurus
                            2. Titanosauridae
                              1. Titanosaurus
                              2. Saltasaurus
                              3. Alamosaurus
        2. Segnosauria?
          1. Segnosaurus
          2. Erlikosaurus
          3. Enigmosaurus
          4. Nanshiungosaurus
        3. Theropoda
          1. Eoraptor
            1. Herrerasaurus
              1. Ceratosauria
                1. Coelophysoidea
                  1. Dilophosaurus
                    1. Coelophysis
                    2. Syntarsus
                2. Neoceratosauria
                  1. Ceratosaurus
                    1. Elaphrosaurus
                    2. Abelisauridae
              2. Tetanurae (back half of tail stiffened)
                1. Torvosaurus
                2. Avetheropoda (wrist and hand modified for grabbing)
                  1. Megalosaurus
                    1. Allosauridae
                      1. Allosaurus
                      2. Acrocanthosaurus
                    2. Coelurosauria
                      1. Compsognathus
                      2. Maniraptora
                        1. Ornitholestes
                            1. Oviraptoridae
                              1. Oviraptor
                              2. Conchoraptor
                              3. Ingenia
                            2. Arctometatarsalia
                              1. Elmisauridae
                                1. Avimimus
                                  1. Tyrannosauridae
                                    1. Aublysodon
                                    2. Albertosaurus
                                    3. Tyrannosaurus
                                    4. Alectrosaurus
                                    5. Daspletosaurus
                                    6. Alioramus
                                    7. Nanotyrannus
                                    8. Tarbosaurus
                                  2. Bullatosauria
                                    1. Troodontidae (sickle-clawed)
                                      1. Troodon
                                      2. Saurornithoides
                                      3. Borogovia
                                      4. Tochisaurus
                                    2. Ornithomimosauria (light skull, no upper teeth, few if any lower teeth, flat claws on feet)
                                      1. Harpymimus
                                      2. Garudimimus
                                      3. Ornithomimus
                                      4. Struthiomimus
                                      5. Dromiceiomimus
                                      6. Archaeornithomimus
                                      7. Gallimimus
                                      8. Anserimimus
                          1. Dromaeosauria (pubis rotated downward or down-and-backward)
                            1. Dromaeosauridae (small size; large sickle-shaped claw on foot)
                              1. Adasaurus
                              2. Deinonychus
                              3. Dromaeosaurus
                              4. Hulsanpes
                              5. Saurornitholestes
                              6. Velociraptor
                            2. Aves (birds -- dinosaurs with feathers)
                              1. Archaeopteryx
                              2. (pygostyle instead of tail; fully-folding wing)
                                1. Sinornis
                                  1. Hesperornithiformes and Ichthyornithiformes
                                  2. Modern birds (no teeth)
      2. Ornithischia
        1. Lesothosaurus
        2. Genasauria
          1. Cerapoda
            1. Marginocephalia (dinosaurs with skull adornments)
              1. Ceratopsia (sharp beak due to rostral bone at tip of snout; frill at back of skull)
                1. Psittacosauridae
                  1. Psittacosaurus
                2. Neoceratopsia
                  1. Leptoceratops
                  2. (larger frill; nasal horn)
                    1. Protoceratops
                    2. (prominent nasal horn)
                      1. Monoceratops
                      2. Ceratopsidae
                        1. Centrosaurinae
                          1. Avaceratops and Brachyceratops
                          2. (hooks on back of frill)
                            1. Centrosaurus
                            2. (spikes at frill margin)
                              1. Styracosaurus
                              2. Pachyrhinosaurus
                        2. Chasmosaurinae
                            1. Chasmosaurus
                            2. Pentaceratops
                              1. Anchiceratops
                              2. Arrhinoceratops
                              1. Torosaurus
                                1. Diceratops
                                2. Triceratops
              2. Pachycephalosauria (thick skull roof, flat-headed or domed)
                1. Wannanosaurus
                2. Goyocephalia
                  1. Goyocephale
                    1. Homalocephale
                    2. Pachycephalosauridae (dome-headed)
                      1. Yaverlandia
                        1. Majungatholus
                          1. Ornatotholus
                            1. Stegoceras
                              1. Tylocephale
                                1. Prenocephale
                                2. Pachycephalosaurus
            2. Ornithopoda
              1. Heterodontosauridae (tusk-like tooth in upper and lower jaw)
                1. Heterodontosaurus
                2. Lanasaurus
                3. Lycorhinus
                4. Abrictosaurus
              2. Euornithopoda
                1. Hypsilophodontidae
                  1. Thescelosaurus
                      1. Yandusaurus
                      2. Othnielia
                        1. Orodromeus
                        2. Zephyrosaurus
                        1. Hypsilophodon
                        2. Parksosaurus
                2. Iguanodontia
                  1. Tenontosaurus
                    1. Dryosaurus
                      1. Camptosaurus
                        1. Iguanodon
                        2. Ouranosaurus (lumps on forehead)
                        3. Hadrosauridae (head crests)
                          1. Telmatosaurus
                          2. Euhadrosauria
                            1. Hadrosaurinae
                                  1. Gryoposaurus
                                  2. Aralosaurus
                                  1. Brachylophosaurus
                                  2. Maiasaura
                                    1. Saurolophus
                                    2. Prosaurolophus
                                  1. Lophorhothon
                                  1. Anatotitan
                                  2. Shantungosaurus
                                  3. Edmontosaurus
                            2. Lambeosaurinae
                              1. Parasaurolophus
                                1. Lambeosaurus
                                  1. Corythosaurus
                                  2. Hypacrosaurus
          2. Thyreophora (dinosaurs with dermal armor)
            1. Scutellosaurus
              1. Emausaurus
                1. Scelidosaurus
                2. Eurypoda
                  1. Stegosauria (spines or plates along the back; long pairs of spines at the end of the tail)
                    1. Huayangosaurus
                    2. Stegosauridae
                      1. Dacentrurus
                        1. Kentrosaurus
                        2. (plates along the back)
                          1. Chungkingosaurus
                          2. Chialingosaurus
                            1. Tuojiangosaurus
                            2. Paranthodon
                            3. Lexovisaurus
                            4. Stegosaurus
                  2. Ankylosauria (fused armor)
                    1. Nodosauridae
                      1. Hylaeosaurus
                        1. Acanthopholis
                        2. Struthiosaurus
                          1. Sauropelta
                            1. Silvisaurus
                              1. Panoplosaurus
                              2. Edmontonia
                    2. Ankylosauridae (bony tail club; large horns at back of skull)
                      1. Shamosaurus
                      2. (horns larger; eyes further back)
                        1. (large plates covering skull roof; horns narrow; short beak)
                          1. Tarchia
                          2. Saichania
                          3. Pinacosaurus
                        2. (small plates covering skull roof; horns broad-based)
                          1. Talarurus
                          2. Euoplocephalus
                          3. Ankylosaurus

    by Mitchell Steven Spector



    Enchanted Learning®
    Over 35,000 Web Pages
    Sample Pages for Prospective Subscribers, or click below

    Overview of Site
    What's New
    Enchanted Learning Home
    Monthly Activity Calendar
    Books to Print
    Site Index

    K-3
    Crafts
    K-3 Themes
    Little Explorers
    Picture dictionary
    PreK/K Activities
    Rebus Rhymes
    Stories
    Writing
    Cloze Activities
    Essay Topics
    Newspaper
    Writing Activities
    Parts of Speech

    Fiction
    The Test of Time

    Biology
    Animal Printouts
    Biology Label Printouts
    Biomes
    Birds
    Butterflies
    Dinosaurs
    Food Chain
    Human Anatomy
    Mammals
    Plants
    Rainforests
    Sharks
    Whales
    Physical Sciences: K-12
    Astronomy
    The Earth
    Geology
    Hurricanes
    Landforms
    Oceans
    Tsunami
    Volcano
    Languages
    Dutch
    French
    German
    Italian
    Japanese (Romaji)
    Portuguese
    Spanish
    Swedish
    Geography/History
    Explorers
    Flags
    Geography
    Inventors
    US History

    Other Topics
    Art and Artists
    Calendars
    College Finder
    Crafts
    Graphic Organizers
    Label Me! Printouts
    Math
    Music
    Word Wheels

    Click to read our Privacy Policy

    E-mail


    Enchanted Learning Search

    Search the Enchanted Learning website for:



    Advertisement.

    Advertisement.





    Copyright ©1996-2018 EnchantedLearning.com ------ How to cite a web page