The Northern Sandhill Frog (Arenophryne rotunda) is a small, fossorial frog native to a small region of the Western Australian coast. It was formerly considered the sole species within the Arenophryne genus until the first decade of the 2000s, when a new species of frog called the Southern Sandhill Frog was discovered about 100 kilometres from Geraldton, Western Australia in Kalbarri National Park and given the scientific name Arenophryne xiphorhyncha.