In a significant archaeological breakthrough, scientists have recently unveiled the discovery of several extinct kangaroo species in Australia and New Guinea, further enlightening our understanding of marsupial evolution. Excavations led by researchers from Flinders University at Lake Callabonna in South Australia produced complete skeletons of the extinct genus Protemnodon, which existed between 5 million and 40,000 years ago. Among the finds, the largest species identified, Protemnodon viator, had an estimated weight of 170 kg and occupied the arid central regions of Australia.

Additionally, two smaller species weighing around 50 kg each were discovered, showcasing adaptations to distinct environments. One of these, Protemnodon mamkurra, exhibited a unique mobility pattern, alternating between bipedal hopping and quadrupedal walking. These ancient kangaroos, resembling modern grey kangaroos in build but with squat, muscular bodies, were extinct on mainland Australia approximately 40,000 years ago but may have survived longer in New Guinea and Tasmania.

In related news, an almost complete fossil of a juvenile sthenurine kangaroo was discovered, fascinating scientists with its implications for the study of kangaroo evolution. The juvenile nature of the fossil promises new insights into the growth and developmental stages of these ancient marsupials. This finding is pivotal, as sthenurines are a group of extinct kangaroos known for their unique physical features and behaviors.

Both discoveries have captivated the scientific community, contributing valuable knowledge to the evolutionary history and diversity of kangaroos in Australia’s ecological past. Further analysis and research are anticipated as experts continue to explore these groundbreaking findings.