REFERENCES:
Saturday, April 13, 2013
AUSTRALIA'S GENYORNIS, EXTINCT ANIMALS AND TRACKS IN ROCK ART:
Extraordinary Engraved Bird Track from North
Australia, Ouzman, et. al., 2002, Cambridge
Arch. Journal, Vol. 12, 2002, p. 103-112.
In 2002, a fascinating article published in
the Cambridge Archaeological Journal (Ouzman et. al., Vol. 12, p. 103-112)
described and illustrated a petroglyph in Australia of a large three toed footprint that
they interpreted as a representation of the track of Genyornis newtoni.
“Genyornis was
a large flightless bird, considerably taller and heavier than the modern
ostrich or emu. It had powerful legs and tiny wings, and probably most closely
resembled its living relatives, ducks and geese. But instead of having webbed
feet and a duckbill, Genyornis had
large hoof-like claws on its toes and a big beak, with which it ate fruit and
nuts, and perhaps small prey. Like modern birds, it had no teeth, but relied on
gizzard stones to assist its digestion.
Genyornis lived
in the dry grasslands and woodlands of southern and eastern Australia. Fossils
have been found in Victoria, New South Wales and South Australia, especially on
the surface of the dry Lake Callabonna. The bones of a number of birds have
been found in one place, suggesting that they lived in flocks. Fossil eggs and
footprints have also been found.
Genyornis illustration, artist: Peter Trussler.
Genyornis was
the last of the dromornithids, and was small compared to other species. This
family of giant birds is known by a variety of names, including ‘thunder
birds’, ‘demon ducks’ and ‘mihirungs’. Humans almost certainly lived alongside
these birds, and some scientists think that hunting may have contributed to
their extinction. Other scientists think the extinction of Australian megafauna
was linked to the continent becoming drier during the last Ice Age.
(museumvictoria.com.au/Melbournemuseum)”
Pictographs identified as Genyornis. www.digplanet.com.
A dating study of more than 700 fragments of Genyornis eggshells demonstrated that the birds declined and became extinct over a short period at about 50k ±5k years BP – too short for climate change. This suggested that the extinction event had been due to human activity. (www.digplanet.com)
Then,
in May 2010, an Aboriginal rock painting at least a possible 40,000 years old,
was discovered at the Nawarla Gabarnmung rock art site in the Northern
Territory that depicts two of the birds. This suggested late survival of the
species in southwest Victoria which is reinforced by Aboriginal traditions.
(www.digplanet.com)
REFERENCES:
Ouzman, Sven, Paul S.C. Tacon, Ken Mulvaney, and Richard
Fullagar
2002 Extraordinary Engraved Bird Track from North
Australia: Extinct Fauna, Dreaming Being, and/or Aesthetic Masterpiece, Cambridge Archaeological Journal, Vol.
12, p. 103-112.
Labels:
australia,
extinct animals,
footprints,
fossil tracks,
Genyornis,
rock art,
tracks
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