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Categories: Anthropology: Cultures, Paleontology: Dinosaurs

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Anthropology: Cultures Anthropology: Early Humans
Published

Key phases of human evolution coincide with flickers in eastern Africa's climate      (via sciencedaily.com) 

Interdisciplinary research in southern Ethiopia enabled the deciphering of eastern Africa's climatic heartbeat and shows how key phases of climate change influenced human evolution, dispersal and innovation.

Paleontology: Dinosaurs
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Shaking the dinosaur family tree: How did 'bird-hipped' dinosaurs evolve?      (via sciencedaily.com) 

Researchers have conducted a new analysis of the origins of 'bird-hipped' dinosaurs -- the group which includes iconic species such as Triceratops -- and found that they likely evolved from a group of animals known as silesaurs, which were first identified two decades ago.

Anthropology: Cultures Archaeology: General
Published

Scientists find evidence for food insecurity driving international conflict two thousand years ago      (via sciencedaily.com) 

Researchers have identified climate-driven changes to food availability as a factor behind dramatic historical events that led the oasis city of Palmyra in Syria to its ultimate demise.

Anthropology: Cultures Anthropology: Early Humans Archaeology: General
Published

The anglo-saxon migration: New insights from genetics      (via sciencedaily.com) 

In the largest early-medieval population study to date, an interdisciplinary team consisting of geneticists and archaeologists analyzed over 400 individuals from ancient Britain, Ireland, Germany, Denmark and the Netherlands. The results show in detail one of the largest population transformations in the post-Roman world.

Anthropology: Cultures Archaeology: General
Published

Chimpanzee stone tool diversity      (via sciencedaily.com) 

Archaeologists and primatologists have shown that stone tool using chimpanzees in West Africa have distinct and recognizable material cultures.

Paleontology: Dinosaurs
Published

Discovery of extinct prehistoric reptile that lived among dinosaurs      (via sciencedaily.com) 

Researchers have discovered a new extinct species of lizard-like reptile that belongs to the same ancient lineage as New Zealand's living tuatara. A team of scientists describe the new species Opisthiamimus gregori, which once inhabited Jurassic North America about 150 million years ago alongside dinosaurs like Stegosaurus and Allosaurus. In life, this prehistoric reptile would have been about 16 centimeters (about 6 inches) from nose to tail -- and would fit curled up in the palm of an adult human hand -- and likely survived on a diet of insects and other invertebrates.

Anthropology: Cultures Archaeology: General
Published

What ancient dung reveals about Epipaleolithic animal tending      (via sciencedaily.com) 

Tiny crystals in ancient animal dung serve as key evidence in a new analysis suggesting the possibility that hunter-gatherers at Abu Hureyra, Syria, may have tended small numbers of animals just outside their dwellings between 12,800 and 12,300 years ago.

Paleontology: Dinosaurs
Published

What killed dinosaurs and other life on Earth?      (via sciencedaily.com) 

Determining what killed the dinosaurs 66 million years ago at the end of the Cretaceous Period has long been the topic of debate, as scientists set out to determine what caused the five mass extinction events that reshaped life on planet Earth in a geological instant. Some scientists argue that comets or asteroids that crashed into Earth were the most likely agents of mass destruction, while others argue that large volcanic eruptions were the cause. A new study reports that volcanic activity appears to have been the key driver of mass extinctions.

Anthropology: Cultures Anthropology: Early Humans
Published

Modern humans generate more brain neurons than Neanderthals      (via sciencedaily.com) 

The question of what makes modern humans unique has long been a driving force for researchers. Comparisons with our closest relatives, the Neanderthals, therefore provide fascinating insights. The increase in brain size, and in neuron production during brain development, are considered to be major factors for the increased cognitive abilities that occurred during human evolution. However, while both Neanderthals and modern humans develop brains of similar size, very little is known about whether modern human and Neanderthal brains may have differed in terms of their neuron production during development. Researchers now show that the modern human variant of the protein TKTL1, which differs by only a single amino acid from the Neanderthal variant, increases one type of brain progenitor cells, called basal radial glia, in the modern human brain.

Paleontology: Dinosaurs
Published

Discovery and naming of Africa's oldest known dinosaur      (via sciencedaily.com) 

An international team of paleontologists has discovered and named a new, early dinosaur. The skeleton -- incredibly, mostly intact -- was found over the course of two digs, in 2017 and 2019.

Anthropology: Cultures Archaeology: General
Published

The Southern Arc and its lively genetic history      (via sciencedaily.com) 

A vast paleogenetic study reveals insights on migration patterns, the expansion of farming and language development from the Caucasus over western Asia and Southern Europe from the early Copper Age until the late middle ages.

Paleontology: Dinosaurs
Published

Fossils of giant sea lizard that ruled the oceans 66 million years ago discovered      (via sciencedaily.com) 

Fossils of a giant killer mosasaur have been discovered, along with the fossilized remains of its prey.

Anthropology: Cultures Archaeology: General
Published

Analysis of everyday tools challenges long-held ideas about what drove major changes in ancient Greek society      (via sciencedaily.com) 

A modern scientific analysis of ancient stone tools is challenging long-held beliefs about what caused radical change on the island of Crete, where the first European state flourished during the Bronze Age: the 'Minoan civilization.'

Anthropology: Cultures Anthropology: Early Humans
Published

Study of ancient skulls sheds light on human interbreeding with Neanderthals      (via sciencedaily.com) 

Research has established that there are traces of Neandertal DNA in the genome of modern humans. Now an exploratory study that assessed the facial structure of prehistoric skulls is offering new insights, and supports the hypothesis that much of this interbreeding took place in the Near East -- the region ranging from North Africa to Iraq.

Anthropology: Cultures
Published

Wood sharpens stone: Boomerangs used to retouch lithic tools      (via sciencedaily.com) 

A new study into the multipurpose uses of boomerangs has highlighted the hardwood objects were used to shape the edges of stone tools used by Australian Indigenous communities.  The research demonstrated how boomerangs could function as lithic (or stone) tool retouchers by investigating the use-wear generated on the boomerangs' surfaces during retouching activities. It was found that these use-wear impacts on boomerangs comparable to those observed on Paleolithic bone retouching tools, which date back to more than 200,000 years ago.

Paleontology: Dinosaurs
Published

All the better to better eat you with -- dinosaurs evolved different eye socket shapes to allow stronger bites      (via sciencedaily.com) 

Large dinosaur predators, such as Tyrannosaurus rex, evolved different shapes of eye sockets to better deal with high bite forces, new research has shown.

Paleontology: Dinosaurs
Published

Prehistoric podiatry: How dinos carried their enormous weight      (via sciencedaily.com) 

Scientists have cracked an enduring mystery, discovering how sauropod dinosaurs -- like Brontosaurus and Diplodocus -- supported their gigantic bodies on land.

Paleontology: Dinosaurs
Published

The speed at which spinosaurid dinosaur teeth were replaced accounts for their overabundance in Cretaceous sites      (via sciencedaily.com) 

Spinosaurid dinosaurs were able to develop up to three generations of teeth at the same time, a high replacement rate that explains why so many teeth of this type have been found in Cretaceous sites.

Anthropology: Cultures Anthropology: Early Humans
Published

Taking your time makes a difference      (via sciencedaily.com) 

Researchers find that stem cells in the developing brain of modern humans take longer to divide and make fewer errors when distributing their chromosomes to their daughter cells, compared to those of Neanderthals.

Anthropology: Cultures Archaeology: General
Published

High-status Danish Vikings wore exotic beaver furs      (via sciencedaily.com) 

Beaver fur was a symbol of wealth and an important trade item in 10th Century Denmark, according to a new study.