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> Eudora > Our Universe > Galaxies > Individual Galaxies > Milky Way > Spiral Arms of the Milky Way > Orion–Cygnus Arm > Individual Planetary & Star Systems in the Orion-Cygnus Arm > Solar System > Objects in the Solar System > Planets of the Solar System > Individual Planets in the Solar System > Earth > Chronology of Earth > History of the Earth > Evolution of Life > Tree of Life on Earth > Domains, Species Kingdoms etc. > Node > Eukaryota > Unikonta > Opisthokonta > Holozoa > Filozoa > Node > Animalia (syn. Metazoa) > Eumetazoa > Bilateria > Nephrozoa > Deuterostomia > Node > Chordata > Node > Craniata > Vertebrata > Node > Node > Node > Node > Node > Gnathostomata > Eugnathostomata > Teleostomi > Osteichthyes > Sarcopterygii > Tetrapodomorpha > Node > Node > Node > Node > Node > Node > Node > Node > Tetrapoda (Terrestrial Vertebrates) > Node > Node > Node > Node > Node > Node > Node > Node > Crown Tetrapoda > Reptiliomorpha > Node > Node > Amniota > Synapsida > Pelycosauria > Eupelycosauria > Node > Node > Sphenacodontia > Node > Node