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Classification of Dragons

Phylogenetic Relationship
  • Sauria
  • Saurigna
  • Lepidosauromorpha
  • Rhynchocephalia
  • Squamata
  • Archosauromorpha
  • Archosauria
  • Dinosauria
  • Aves
  • Suchia
  • Crocodylomorpha
  • All true dragons fall under the class Saurigna. It is a somewhat controversial class of organisms, many scientists categorising them as lizards, even birds on occasion. True dragons are characterised by their scaly body, laying eggs (except for a select few species), and a flame sac.

    Since taxonomy first became popularised, 'dragons' have been accepted as their own clade, but their position in the world-wide cladogram has always been debatable. Saurigna had often been placed under Squamata, diverting alongside Bifurcata and Dibamia. It is now more widely accepted to say Saurigna split off from Sauria.


    The study of dragons continues to be one of the most enriching sciences. These creatures are beyond breathtaking, capable of harnessing the elements of nature at will, dominating whatever ecosystem they find themselves in.
    — Passionate dracologist
    Terrafin by Mochi

    Saurigna has three major subdivisions: Apterosquama, wingless dragons, Choripodisquama, legless dragons, and Ouranosquama, the most diverse infraclass containing all other species.

    The number of dragon species in the Milky Way alone is estimated to be in the tens of trillions.

    The modern classification of true dragons is thanks to taxonomists working for the A to Zoo.

    There is much debate surrounding Apterosquama and Choripodisquama, and whether or not they belong under Saurigna. Most scientists nowadays believe they do, as they fit the base criteria for this class of organisms.

    This cladogram's content is incomplete!

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    Cover image: by Mochi

    Comments

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    Dec 14, 2025 23:59

    That's such a cool cladogram! >:)

    Fly high, Guardian. o7
    — Nulcheck
    Dec 15, 2025 21:39 by Mochi

    Thank youuuu!! (and thank you for the CSS help) <33

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    Dec 15, 2025 00:41 by Dr Emily Vair-Turnbull

    I love the little nod to the confusion that is taxonomy, haha.

    Emy x
    Explore Etrea | Summer Camp 2026
    Dec 15, 2025 21:39 by Mochi

    hehehe thank you! <3

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    Dec 15, 2025 01:03 by Lou

    OOOOO i was excited for this one i love it so much !!! the cladogram is SO pretty

    GM · Theologist · Professional Little Guy

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    Dec 15, 2025 21:40 by Mochi

    THANK YOU LOUU <3

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    Dec 15, 2025 05:04 by Dimitris Romeo Havlidis

    This org chart is SO sexy

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    Dec 15, 2025 21:39 by Mochi

    it's a sexy feature ;)

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    Dec 15, 2025 12:00 by CoolG

    Taxonomy of dragons being an object of controversy makes so much sense XD The organisation chart is so cool! :O

    Explore the dark but magical Ysteria, the vibrant and bustling Auxul or the world of contrasts Mytharae!   Have a good one!
    Dec 15, 2025 21:41 by Mochi

    Thank you so much!! <33

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    Dec 15, 2025 16:38 by Icarus Crow

    I always love reading about your classifications, taxonomy fascinates me!! You’re incredible!

    I'm off on the Great WA Readathon 2026 unofficial challenge! Feel free to join me in this great reading endeavor, and leave some love on some amazing articles!

    ~ Sunny

    Dec 15, 2025 21:41 by Mochi

    aaaa thank youu!! <33

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    Jan 19, 2026 15:06

    Your takes on taxonomy are always a joy to read, Mochi <3

    At the end of everything, hold onto anything.
    Jan 19, 2026 18:35 by Mochi

    thank youu! <33

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