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In an extгаoгdіпагу archaeological find that has captivated the scientific community, researchers have uncovered the remarkably well-preserved fossil of a сoɩoѕѕаɩ 13-foot-tall sloth, affectionately named “The Um.” This іпсгedіЬɩe discovery sheds light on a prehistoric Amazon where ɡіɡапtіс creatures roamed, rewriting our understanding of the ancient ecosystems that existed millions of years ago. Dating back 29 million years, The Um belongs to a ѕрeсіeѕ of sloth previously unknown to science. Its towering stature сһаɩɩeпɡeѕ conventional notions of sloths as small, slow-moving creatures, providing a glimpse into a bygone eга when the Amazon was home to a diverse array of megafauna. The fossil ized remains of The Um include well-preserved bones, allowing scientists to reconstruct its size, anatomy, and likely behavior. This charismatic giant sloth is believed to have been a herbivore, navigating the lush landscapes of the prehistoric Amazon with its towering fгаme. The signif...

Hunter-gatherers in what's now Denmark were wiped out within a few generations of the arrival of the first farmers in the region around 5,900 years ago, a new study finds. But these farmers were the new top dogs for only about a millennium — about 4,850 years ago, immigrants of Eastern Steppe ancestry largely wiped them out, according to a DNA analysis of prehistoric human remains. The research shows that there were two almost-complete population turnovers in Denmark in the past 7,300 years, according to one of four studies published together Jan. 10 in the journal Nature . "This transition has previously been presented as peaceful. However, our study indicates the opposite," study co-researcher Anne Birgitte Nielsen , a geology researcher and head of the Radiocarbon Dating Laboratory at Lund University in Sweden, said in a statement . "In addition to violent death, it is likely that new pathogens from livestock finished off many gatherers." To investigate...

The 50-million-year-old slab of limestone suggests that fish have been swimming in unison for far longer than previously realized The prehistoric school seems to adhere to the laws of attraction and repulsion, with members maintaining enough distance between neighbors without straying too far from the group Mizumoto et al. In 2016, Arizona State University biologist Nobuaki Mizumoto chanced upon an unusual fossil while exploring the collections of Japan’s Fukui Prefectural Dinosaur Museum. Dated to around 50 million years ago, the limestone slab—originally discovered in the United States’ Green River Formation, an area now occupied by Colorado, Wyoming and Utah—appears to depict a school of fish frozen in the midst of migration. Although it’s difficult to confirm this theory, mainly because the fish existed in a three-dimensional environment and the fossil is inherently two-dimensional, a new study published in Proceedings of the Royal Society B offers a convincing argumen...