The most notable thing about the nearly complete fossils was not that they were related to the 40-kilo kangaroos that mysteriously evolved to climb trees, although this was quite remarkable. A truly astounding paleontologist is that the Nulbarore Plain of southwestern Australia, the site of the discovery, is a bottomless shrub and was thought to be the same when the new name Kagrus Kitchenrani hopped – but, apparently, Climbing – About 50,000 years ago. The Latin-derived name says it all: “null” for “none”, and “arbor” for “tree”. The barren, slug-shaped area – 1,100 kilometers (700 mi) from head to tail – is even written by road signs that say, in all capital letters, “END of TREELESS PLAIN”.
“I remember the bones of the arms and legs with their big, curved claws and saying to my colleague, ‘You’re probably not going to believe me, but I think it was climbing trees!” A researcher at the Center for Climate-Affected Terrestrial Ecosystems at Murdoch University in Perth.
The “highly unpredictable” tree climbing behavior, detailed Wednesday at the Royal Society Open Science, is certainly important, she told AFP.
With the exception of distant cousins in the tropical canopy of New Guinea, 60-odd living species of kangaroos, wallabies and other marsupials in the family Macropoda – all descendants of tree-habitats, such as constipated-ancestors – have long evolved to Their path has developed on Terra Farma.
“Over the past 50,000 to 100,000 years, the habitats and environments in the region are exactly what they are doing now, and perhaps different from what we had previously interpreted for that time. Geological and botanical evidence,” said Warberton.
Fossils are, in essence, “completely incompatible” with expected behavior and ecology.
Warburton, a paleontologist at Flinders University in Adelaide, and his colleague Gavin Predo, were not, in strict terms, the first fossil hunters to uncover this asymmetrical roe.
But earlier specimens of the same species have been incorrectly inserted into taxonomic brackets based on a few partial teeth and an upper jaw fragment.
Working with two complete skeletons – one male, one female – Warburton and Prideau were able to repurpose Valbia kitchenrani as Congrus kitchenrani, a sub-genus still extinct in the possession of the same species. .
In fact these large-fenced creatures have been pushed to the extent that they are unknown to develop arboreal skills.
“It takes a lot of energy and a lot of muscle to climb a tree,” Warbatan said.
“To make that worth, the trees must have had some very good food resources.”
Fossils originated in the Thylkolaev caves, named after lion-like carnivorous carnivores, which lasted until extinction as tree-climbing kangaroos in the region for nearly two million years.
Precisely the megafena’s managery that populated Australia’s sun-scorched landscape – including giant wombs, one-ton marsupials, and croc-shaped lizards – nearly all died at the same time, the subject of heated debate. is.
For a long time a dramatic change in climate was considered the main culprit, but recent research tracking the movement of the continent’s earliest humans suggests that they are guilty.
Nullarbor Plain – historically occupied by indigenous Australians – has a desert-like climate, summer daytime temperatures close to 50 ° C (122 Fahrenheit), and winter nights that may fall well below freezing.
Current mammals include southern hairy-nosed wombs, which bury in the sand from the hot sun, as well as shelter in red kangaroos and dingoes.