Sarcopterygiilobe-finned fishes and terrestrial vertebrates


    • Brothers Island tuatara
      Sphenodon guntheri
    • Tuatara
      Sphenodon punctatus
    • Tuatara
      Sphenodon punctatus
    • Sphenophryne cornuta
    • Bahia hairy dwarf porcupine
      Sphiggurus insidiosus
    • Mexican hairy dwarf porcupine
      Sphiggurus mexicanus
    • red-naped sapsucker
      Sphyrapicus nuchalis
    • red-naped sapsucker
      Sphyrapicus nuchalis
    • red-breasted sapsucker
      Sphyrapicus ruber
    • red-breasted sapsucker
      Sphyrapicus ruber
    • red-breasted sapsucker
      Sphyrapicus ruber
    • yellow-bellied sapsucker
      Sphyrapicus varius
    • yellow-bellied sapsucker
      Sphyrapicus varius
    • yellow-bellied sapsucker
      Sphyrapicus varius
    • yellow-bellied sapsucker
      Sphyrapicus varius