Giant Wombat Called The Diprotodon Once Ruled Australia — And It Was Hippo-Sized.
The six-foot, 6,000-pound Diprotodon was the largest marsupial to have ever existed, Throughout most of the Pleistocene epoch, a gargantuan marsupial roamed the grasslands of Australia.
The Dimensions Of The Diprotodon Megafauna like the Diprotodon are defined as being at least 130 percent larger in body mass. In the case of the Diprotodon, it is more than 200 times larger than its closest living cousins the wombat and the koala, making it the largest species of Australian megafauna.
Often referred to as the Ice Age between 1.6 million to 46,000 years ago, the Pleistocene epoch in which the Diprotodon roamed was rife with super-sized versions of mammals and marsupials we may recognize today, like Megatherium the giant sloth, the mammoth, or the elephant bird.
They roamed semi-arid plains, savannahs and open woodlands, however, as opposed to the more hilly coastal areas. Diprotodon lived all over the continent of Australia and because they were herbivores, they could feed and survive off of almost any kind of plant.
It is thought that in fact those large incisors were used to root out or dig up plants, too. The Diprotodon likely didn’t have too many predators, save for its young in danger of being whisked off by a marsupial lion or terrestrial crocodile. But these were the terms of the territory in the Pleistocene epoch: large animals with large stakes.
As such, Diprotodon males probably made the most of their time and mated with multiple partners. Fossil evidence has shown that males were likely larger than females and presented enough physical differences as to suggest that they did indeed service multiple females throughout the breeding season.
Discovering The Diprotodon
The first recorded discovery of this giant wombat was by Major Thomas Mitchell in the 1830s, in a cave near Wellington in New South Wales, Australia. From there, the fossils and discovery were sent to Sir Richard Owen, who named the creature “Diprotodon,” for its “two forward teeth.”
The oldest fossils of the Diprotodon were discovered at Lake Kanunka, South Australia and Fisherman’s Cliff, in New South Wales. The most complete diprotodon skeleton was found at Tambar Springs, New South Wales, and was excavated by and is now on display in the Australian Museum.
It’s also believed that these elephantine creatures co-existed with the indigenous people of Australia for thousands of years before going extinct as aboriginal rock art appears to depict them. But whether this co-existence with humans proved deadly for the Diprotodon some 46,000 years ago — or whether it was something else — is still up for debate.
The Demise Of The Diprotodon
About 14 out of 16 large Australian mammals went extinct during the Pleistocene period, Diprotodon being one of them. Of the fossils that have been discovered, many signal to the notion that these creatures died from drought and loss of hydration.
For instance, many skeletons of the Diprotodon have been excavated from Lake Callabonna, a dry salt lake in southern Australia. Because of this, it is believed that Diprotodon families wandered to the lake during the dry season only to fall in and become trapped.
In 2012, researchers also uncovered the remains of about 50 Diprotodon at BHP Billiton Mitsui Coal’s South Walker Creek mine site in Queensland, Australia – this furthers the idea that the animals became trapped in the mud of the lake and died there.
It’s here where the researchers found and nicknamed “Kenny,” a perfect example of the Diprotodon, whose jawbone is over 2 feet long. Other theories include climate change, hunting, and the arrival and land management of the aboriginals of Australia.
Climate change advocates suggest that the animals were exposed to a period of extremely cold and dry weather. Advocates of the human hunting theory posit that humans hunted the gentle giants into extinction.
Still, others believe that land management in the form of fire-farming destroyed their habitat, their access to food, and shelter. Ash deposits around Australia suggest that the aboriginals there were “fire-stick farmers.” This means they used fire to drive game out of the bushes, but this then destroyed the vegetation integral to the Diprotodon’s diet.
Perhaps there is some truth in all theories of the Diprotodon’s extinction. Researchers are unsure as to which is the definite cause or if it is a combination of them all.