Fossils found at Lightning Ridge, New South Wales, suggest that 110 million years ago Australia supported a number of different monotremes, but did not support any marsupials. Marsupials appear to have evolved during the Cretaceous in the contemporary northern hemisphere, to judge from a 100-million-year-old marsupial fossil, "Kokopellia", found in the badlands of Utah. Marsupials would then have spread to South America and Gondwana. The first evidence of marsupials in Australia comes from the Tertiary, and was found at a 55-million-year-old fossil site at Murgon, near Kingaroy in southern Queensland. The Murgon fossil site has yielded a range of marsupial fossils, many with strong South American connections — unsurprising since the two continents were both a part of Gondwana. At Murgon evidence of a placental mammal, a Condylarth ("Tingamarra porterorum)", was discovered. Placental mammals were also found in North America and South America at this time. This find suggests that placental mammals did coexist with marsupials in Australia in the early Tertiary, although only marsupials persisted.