What are megafauna?

Megafauna are giant animals usually weighing over 44 kilograms (kg). Most megafauna are now extinct (no longer exist) and were closely related to living species of animals we see today. You have probably heard of the more commonly known megafauna species, like the saber-toothed cat and woolly mammoth from North America.

However, Australia is unique with its own megafauna ranging from huge and sometimes strange marsupials (mammals with a pouch), like the giant sloth bear-like Palorchestes to very large monitor lizards like the giant goanna, Megalania.

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A crime scene of the past - investigating tropical Ice Age megafauna

In 2008, an extraordinary discovery was made at South Walker Creek, located near the town of Nebo, west of Mackay in Queensland, Australia. Traditional owners of the area, the Barada Barna people, were conducting a cultural heritage survey for the South Walker Creek Mine when they came across some interesting bones. These bones were not the usual white colour, like those of cows you find in the paddock, nor were they light in weight or becoming brittle from exposure to the sun. They were dark coloured, a little heavier than usual and quite solid in form. The bones were fossils!

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Discovering the world's largest kangaroo - Part 1: In the field

As the weather begins to cool, the ‘dig’ season starts for us (palaeontologists) as we venture off along the coast and into the outback heart of Queensland. Over the last ten years we have been investigating a series of fossil sites at South Walker Creek located near the town of Nebo, west of Mackay. It is here that we are finding some of Australia’s last tropical ice age megafauna.

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Discovering the world's largest kangaroo - Part 2: In the lab

The giant kangaroo tibia (shinbone) found at the megafauna fossil sites of South Walker Creek, travelled safely back to the Queensland Museum’s Geosciences collection. The specimen is treated like evidence for a case (fossil evidence!) and is processed through a series of stages from field collection (Part 1) and preparation, to research and conservation.

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