Base of the evolutionary tree for Archelosauria

← parent

• Archelosauria (1430 species)
  • unnamed group 1229 → (1412 species)
    • Archosauromorpha → (1279 species)
      • unnamed group 1363 → (1278 species)
        • unnamed group 1364 → (1277 species)
        • Protorosaurus
      • Aenigmastropheus
    • unnamed group 1230 → (133 species)
      • unnamed group 1244 → (119 species)
        • Sauropterygiformes → (87 species)
        • Ichthyosauromorpha → (32 species)
      • Thalattosauria → (14 species)
        • Thalattosauroidea → (8 species)
        • Askeptosauroidea → (6 species)
  • Pantestudines → (18 species)
    • Placodontia → (14 species)
      • Cyamodontoidea → (10 species)
        • Cyamodontidae → (2 species)
        • Henodontidae → (2 species)
        • Placochelyidae → (5 species)
        • Sinocyamodus
      • Placodontoidea → (2 species)
        • Paraplacodus
        • Placodus
      • Atopodentatus
      • Pararcus
    • unnamed group 1213 → (4 species)
      • unnamed group 1214 → (3 species)
        • Testudinata → (2 species)
        • Odontochelys
      • Sinosaurosphargis

Other links

• Wikidata
• Encyclopedia of Life
• NCBI (genetics)"
• Open Tree of Life

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