They studied at several sites, including a 21st-century reproduction of Thjodhild's church on Erik the Red's estate, known as Brattahlíð, in present day Qassiarsuk, Greenland.This is an artist's illustration of Antarctica, 250 million years ago. The upper jawbone, including several teeth, was recovered in a prehistoric cave site.This is an excavated structure at the northern edge of the Grand Plaza at Teposcolula-Yucundaa in Oaxaca, Mexico. Researchers have discovered numerous fossils from Lucy’s Australopithecus afarensis species—ape-like, bipedal human ancestors approximately 4 feet tall—that are 3 million years or older. New research suggests that 40% of 25 individuals buried at Stonehenge weren't from there -- but they possibly transported stones from west Wales and helped build it. In Swahili, the name translates to "animal of the Mtuka with a heart-shaped tail." Research remains to be done, however, to discover what the specimen ate and whether it employed stone tools. New analysis suggests that salmonella caused a typhoid fever epidemic.Standing about 4 feet tall, early human ancestor Paranthropus boisei had a small brain and a wide, dish-like face. Researchers believe these served as body ornamentation for Neanderthals.The earliest modern human fossil ever found outside of Africa has been recovered in Israel. This is an artist's illustration showing a cross-section of Earth's forming crust approximately 3 to 4 billion years ago.

This illustration shows one of the few ground-dwelling birds that survived the toxic environment and mass extinction.The remains of a butchered rhinoceros are helping researchers to date when early humans reached the Philippines. It was a hyaenodont, a now-extinct group of mammalian carnivores, that was larger than a modern-day polar bear.The right upper teeth of the newly discovered species Homo luzonensis. Illuminated medieval manuscripts are full of intricate decorations, illustrations and colors, including "endangered colors" that can no longer be recreated today.These monkeys can be found in ancient Grecian frescoes. (Credit: Kaye Reed)The international team of paleoanthropologists working in Ethiopia in 2013 sought to close that gap by uncovering fossil evidence of human ancestors. This is an artist's impression of dinosaurs on prehistoric mudflat in Scotland, based on varied dinosaur footprints recovered on the Isle of Skye. This adolescent was found lying on his side, which suggests a slower death. This suggests that modern humans left Africa at least 50,000 years earlier than previously believed. And the details are so accurate that researchers were able to identify them as vervet monkeys and baboons. And about 40,000 years ago, the last of the Neanderthals died off, and modern humans thrived.Many questions remain for the researchers. “Some of the oldest sites in China were previously only 1.6 or 1.7 million years old. The fossil of the newly discovered armored dinosaur Akainacephalus johnsoni was found in southern Utah.The foot is one part of a partial skeleton of a 3.32 million-year-old skeleton of an Australopithecus afarensis child dubbed Selam. A new study establishes the timeline of the cave, and it sheltered the first known humans as early as 300,000 years ago.This artist's illustration shows a marine reptile similar to a platypus hunting at dusk. A nearly two-million-year-old Homo erectus skullcap was found in South Africa. Find out what's happening in the world as it unfolds.Finding both in the same cave illustrates that multiple early migrations out of Africa, rather than a single event, helped early humans spread, according to the researchers. This donkey skull was recovered in a Tang Dynasty noblewoman's tomb. The fossilized footprints reveal a group of 17 people that traveled together, likely including 14 women, two men and one juvenile male.Blade-like stone tools and beads found in Bulgaria's Bacho Kiro cave provide the earliest evidence for modern humans in Europe 47,000 years ago.This artist's illustration shows what an early, small ichthyosaur that lived 248 million years ago may have looked like. The remains of the so-called Arlington Springs woman were recently reanalyzed by the latest radiocarbon dating techniques and were found to be approximately 13,000 years old. This artist's illustration of Dineobellator notohesperus shows them in an open landscape, across what is now New Mexico, along with Ojoceratops and Alamosaurus in the background. Southeast Europe is considered to be one of those major migration corridors out of Africa.Both skulls were found in a block of breccia, or broken fragments of rock and fossil cemented together, wedged high between the walls of the Apidima Cave in southern Greece. It had a temperate swampy rainforest. His identity has been the subject of great debate for years.Vertebrae fossils of a previously undiscovered type of stegosaurus were found in Morocco. It's a cousin to other mysterious early reptiles that arose after the Permian mass extinction event 250 million years ago.The skeletal remains of Homo antecessor are on display in this image. At the time when modern humans and Neanderthals lived there separately, sea levels were lower. “The importance of the specimen is that it adds a data point to a period of time in our ancestry in which we have very little information,” Kimbel said. They scanned the fossils and created 3D reconstructions of them. ... Research remains to be done, however, to discover what the specimen ate and whether it employed stone tools.

They provide evidence that dinosaurs laid soft-shell eggs.These tools, made from the bones and teeth of monkeys and smaller mammals, were recovered from Fa-Hien Lena cave in Sri Lanka. The oldest evidence of mobility is 2.1 billion years old and was found in Gabon. Given the fact that the modern human skull is older than the Neanderthal skull, which was unexpected, researchers believe that a group of modern humans lived in the area but didn't thrive.