human ancestor that lived from two to four million years ago It might have been from a previously unknown hominid group but the scientists would need to bring up more bones in order to tell Descending again and again for three weeks the scientists brought up bone after bone They were bringing up pieces of several skeletons The cave contained more fossils than anyone had seen in one place Removing them was hard work Normally fossils are encased in stone under layers of dirt In Rising Star Cave approximately 400 fossils lay on the surface and the scientists had to remove them without disturbing the fossils underneath Only after removing the first 400 fossils did they reach fossils partially buried The women swept the dirt away with small paintbrushes and removed all of the fossils in that layer before moving down to the next one They worked slowly But in 21 days they recovered more than 1 500 bones from as many as 18 individuals DARK ZONE SACRIFICE Holley Moyes a cave archaeologist at the University of California Merced studies ancient Mayan ruins throughout Belize Guatemala and Mexico These caves contain sacrifices of pottery tools and even people From 200 to 700 CE the Maya left sacrifices near the mouths of the caves From 700 to 900 CE a time of drought they sacrificed in the dark zone areas unlit by the sun Moyes thinks the Maya sacrificed in the dark zone because they believed that rain came from caves Darkzone sacrifices might lure the rain out of the depths of the caves Moyes continues to search Mayan caves for evidence to prove her theory What They Mean As the scientists doing the excavation and other researchers examined the fossils they realized they were looking at a combination of traits not previously seen The bones belonged to a new human ancestor Scientists determined
Sientists examine bone fragments found in Rising Star Cave the adults of this species stood less than five feet 1 5 m tall They walked much as people do today so their feet looked the same as modern feet Their rounded skulls meant they were human so the researchers named them Homo naledi Naledi means star in Sesotho a local South African language Because so many bones were found in one place Homo naledi may be important Rising Star Cave was not located at the bottom of a drop similar to other fossil rich caves so the hominids did not fall in by accident It was free of sediment sothe bones did not wash into the cave during a flood Although predators create bone deposits the Homo naledi remains show no tooth marks from a predator Predators deposits also contain bones from many animals everything the predators ate over time Except for a few mice and birds this deposit was made up exclusively of Homo naledi bones All of these factors mean Rising Star Cave may have been a burial spot
Whether or not they had found the first human ancestors to bury their dead Elliott Feuerriegel Eaves Gurtov Morris and Peixotto filled in a blank on the human ancestral tree But they are not the first women to make a name for themselves in paleoanthropology Before them came Mary Leakey a paleoanthropologist who made important finds in the Olduvai Gorge region of Tanzania These women join Leakey and other scientists who laid the foundations for the study of humankind Women in Science Throughout history small numbers of women have been scientists One of the earliest was Hypatia She lived in Alexandria now part of Egypt in the 300s An astronomer she also wrote texts about mathematics Despite the discouragement THE GRANDAM OF PALEOANTHROPOLOGY of men the tradition of women From 1935 to 1983 Mary Leakey hunted fossils in the Olduvai Gorge in Tanzania astronomers did not die She made many incredible finds during her research In 1948 Leakey found a Throughout Europe in the partial skull Proconsul africanus lived more than 18 million years ago and was the first known primate from that time period the Miocene Era Leakey found 1600s and 1700s women could another partial skull in 1959 Nearly two million years old Zinjanthropus boisei not attend universities But in was small brained with huge teeth and heavy jaw muscles anchored to a skull ridge Then in 1979 Leakey discovered an 89 foot 127 m long trail of early Germany between 1650 and 1720 human footprints This 3 6 million year old trail was the first evidence of a 14 percent of all astronomers bipedal ancestor who walked upright on two feet were women To learn they read whatever texts they could find
Some women paid private tutors WHAT HYPATIA TAUGHT They often worked with their Hypatia studied and taught astronomy and mathematics She did not teach at a brothers or husbands leaving university or college She taught students at her home A letter from one of her scholars unsure which women students tells about a lesson on how to build an astrolabe a portable tool used to take astronomical measurements simply assisted the men and which studied the stars themselves Throughout this time women researched and observed reasoned and debated Still their accomplishments were often ignored In part this happened because many people believed women were incapable of science and their presence made men less capable as well In the early 1900s women were finally allowed to study at graduate schools within the United States and they earned PhDs in all scientific areas Unfortunately after World War II 1939 1945 women were once again forced out of most universities a situation that was not reversed until the 1970s Since then women have been attending school and earning upper level degrees in every scientific field Some of these scientists become academics teaching at universities and doing research in the quest for new knowledge Others research health the environment or energy and work for government agencies Still others establish businesses in computing or medicine Wherever they work they use science to change the world and how people perceive it
