Indefatigable_Galápagos_mouse
Nesoryzomys indefessus
Extinct species of rodent
Nesoryzomys indefessus, also known as the Santa Cruz nesoryzomys[2] or Indefatigable Galápagos mouse,[3] is an extinct species of rodent from the genus Nesoryzomys of family Cricetidae from Galápagos Islands of Ecuador. It formerly lived on Santa Cruz Island, but is now extinct, probably due to the introduction of black rats. Another related rodent, N. narboroughi, is sometimes considered to be a subspecies of N. indefessus.