- suborder Anisoptera
- suborder Myxinoidei
- Stomatopoda
- suborder Petromyzoniformes
- Sauropterygia
- suborder Megachiroptera
- Siphonaptera
- Scleroparei
- suborder Alcyonacea
- suborder Blattaria
- suborder Theropoda
- Stereospondyli
- suborder Prosimii
- Sauropoda
- superorder Acanthopterygii
- Sauropodomorpha
- suborder Cephalaspida
- suborder Euronithopoda
- suborder Menotyphla
- suborder Pinnipedia
- suborder Anseres
- suborder Tarsioidea
- suborder Sauropodomorpha
- suborder Brachyura
- suborder Megaloptera
- suborder Anthropoidea
- suborder Sciuromorpha
- suborder Carnosaura
- suborder Homoptera
- suborder Percoidea
- suborder Plesiosauria
- suborder Nothosauria
- suborder Eurylaimi
- suborder Reptantia
- suborder Myxiniformes
- Saurischia
- suborder Ornithomimida
- Sirenia
- suborder Microchiroptera
- suborder Scombroidea
- Sciuromorpha
- suborder Heteroptera
- Solenichthyes
- suborder Blennioidea
- Strepsirhini
- suborder Hyperoartia
- Sarcosporidia
- suborder Manteodea
- Stegocephalia
- suborder Lipotyphla