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Neanderthals' Extinction May Rest on Not Having a Coat

Journal of Anthropological Archaeology, the quartet describe how they determined the possible reason Neanderthals perished during the Ice Age while early humans survived, by looking at what’s been found at each groups’ campsites. It’s not what the researchers found by analyzing the data related to Neanderthal campsites that is so significant, but what they didn’t: any evidence the Neanderthals used animal fur to stay sufficiently warm. When the campsites of modern humans and Neanderthals were compared, the researchers discovered the one glaring difference at the Neanderthal sites was the absence of animal remains of the type that would have been used to make the parka style clothing needed in a cold climate. By comparison, numerous examples of fox, mink, rabbit and wolverine remains were identified at 56 locations of early human campfires, many of which might have been skinned for use in crafting fur coats or parkas. The discovery of wolverine remains in particular was of note because it’s the animal which people living in the Arctic often use to keep warm, as it works extremely well as a fringe and lining on the hood. The Neanderthal extinction happened suddenly, at around the same time modern humans started to expand into Eurasia. Since the discovery of the first Neanderthal remains, both their place within the human family tree and their relationship to modern humans has been a hot topic of debate. They’ve been classified, at different times, as both a separate species known as Homo neanderthalensis, and as a subspecies named Homo sapiens neanderthalensis. Following an analysis of 40 individual Neanderthal sites in western Europe, researchers concluded in 2014 that the Neanderthals became extinct around 40,000 years ago. Although much earlier than previous estimates, this date was established using improved methods of radio carbon dating (Neanderthals could have survived longer in Siberia and eastern Europe). Theories on the Neanderthals’ extinction include: an inability or failure to adapt to the changing climate, or competitive exclusion as a result of the encroachment of modern humans. It’s also possible their extinction was hastened by violent conflicts with early humans. Warfare and conflict were pervasive features within hunter-gatherer social groups. Additional evidence of early humans creating warm clothes has also been found, for example, bone needles and other types of tools used to scrape animal pelts. Also, a number of figurines discovered in Siberia, which have been dated back to around 24,000 years ago, were found wearing parka-like animal fur coats. No evidence of Neanderthals wearing or crafting cold weather clothing has ever been discovered. Why the Neanderthals didn’t have clothes warm enough to survive the colder climate remains a mystery, the researchers suggest in their paper that they might have lacked the know-how, or perhaps their cultural traditions somehow prevented it. ]]>

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Grass-Based Foods in Hominin Diet Earlier Than Thought

Australopithecus afarensis diversified their diet, are important, because the dietary shift was directly linked to bipedalism and a better adaptability. When the first primates emerged on the evolutionary scene, they were pretty much tree-bound, which meant they were also bound to a certain limited number of habitats. By learning to walk on the ground, and upright at that, their hominin heirs gained access to more food sources and could move over greater distances, which meant they could survive and thrive in more diverse habitats than their ancestors. It is possible that climate change had a role to play in the dietary changes they observed, but the authors of the study report that they were unable to establish such a link firmly, instead suggesting that the emergence of new primate species was an important factor as it changed the ecology of the already existing primate communities. One of these new species was the now extinct baboon Theropithecus oswaldi, which joined the primate community around 3.76 million years ago, around the time the dietary change started to take place. It is with relation to these primates that Levin’s team found something very interesting. It appears that these large baboons started eating grass and grass-based foods before their teeth changed shape to be more suitable for grazing. This shape change only happened after they learned to walk on the ground. Study co-author Johannes Haile-Selassie from the Cleveland Museum of National History told Heritage Daily that the results “indicate that form does not always precede function. In the earliest baboons, dietary shift toward grass occurred before its teeth were specialized for grazing.” For more information: “Dietary change among hominins and cercopithecids in Ethiopia during the early Pliocene” Image courtesy of Wikimedia Commons user: Rehman Abubakr ]]>

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Scientists Recreate Colosseum Lift for Animals

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Up to a Third of Animal Mummies Don't Contain a Body