grrlscientist writes "Recently studied Australian Aboriginal rock art may depict a giant bird that is thought to have become extinct some 40,000 years ago, thereby making it the oldest rock painting on the island continent. The red ochre drawing was first discovered two years ago, but archaeologists were only able to confirm the finding two weeks ago, when they first visited the remote site on the Arnhem Land plateau in north Australia. 'Genyornis was a giant flightless bird that was taller and heavier than either the ostrich or emu. It had powerful legs and tiny wings, and probably closely resembled ducks and geese, its closest living relatives. ... Interestingly, Genyornis bones have been excavated in association with human artifacts in Cuddie Springs in the Australian state of New South Wales. It is likely that humans lived alongside these birds, and some scientists think that humans may have contributed to their extinction." Jamie recalled that in the essay "A Lesson from the Old Masters," in the volume Leonardo's Mountain of Clams and the Diet of Worms, Stephen Jay Gould thanks our ancestors who drew Irish Elk on cave walls for "providing the only possible evidence for a hump that would otherwise have disappeared into the maw of lost history."