Tiny new marsupial species, not seen in two decades, confirmed from museum specimens

Researchers examining museum specimens and DNA from over 220 specimens confirmed the Arnhem Plateau planigale (Planigale petrophila) as a new species in Australia's Northern Territory; the discovery revealed that what was classified as a single species (P. ingrami) actually represents four distinct planigale species, with the Arnhem Plateau planigale known from three specimens collected within 12 kilometers of each other in Kakadu National Park.