Proof Found in Australia Links Humans to DinosaursThe Australian Society for the Study of Subcutaneous Cultures (ASSSC) today released information about the discovery of a previously unknown species of human that could provide more insight to when humans first walked the earth. A complete skeleton found on the Coast Plains, near Melbourne, has anthropologists excited about the possibility of adding another link to the chain of human history. Scientist Peter L. Reilly describes the find: "This mammal, which we have named Homo jurassicus parkus, appears to share several similarities with both modern humans and Jurassic-era dinosaurs. The skull shape, for instance, measures only 1/15th of a centimeter larger than the common Homo sapiens skull, and the metatarsal bones of the feet share a distinctive pattern with those identified from fossils belonging to Compsognathus, a genus of small, bipedal, carnivorous dinosaurs that are believed to have lived over 150 million years ago." Researchers have been flocking to the Canady site in hopes of finding more proof that dinosaurs and humans share a deeper connection than previously thought.Why might people accept this article as fact?A.It refers to the names of real people and places.B.It quotes a scientist who seems to know a lot about the topic.C.It includes information that people find interesting.D.It uses short sentences that give a lot of information.SUBMITarrow_backPREVIOUS

The following data was collected by Austrailian researchers and published in the Australian Journal of Zoology. The data shows the nasal width and nasal length of a specific species of male gray kangaroo. Researchers used this data to determine if a particular kangaroo skull belonged to this species of kangaroo. They found that kangaroo skulls from other species did not follow this same data trend.If a kangaroo skull had a nasal length of 630 mm and a nasal width of 235 mm, does it appear that this skull is from this specific species of male gray kangaroo?Group of answer choicesYes. By looking at the graph we can see if a skull has a nasal length of 630 mm the nasal width varies between about 200 and 250. Since 235 mm in within this range, the skull is probably from this species.No. A quadratic trendline would have been better for this data. So the prediction given by the trendline is not accurate.Yes. If you use 630 mm as the input of the trendline, you get a predicted nasal width of 234.8 mm. This shows the skull is probably from this species.No. If you use 235 mm as the input for this trendline, you get a predicted nasal length of 114.0 mm. Since this skull has a nasal length of 630 mm, the skull if very different from the data shown in the graph. The skull is probably from a different species of kangaroo.No. If you use the linear equation to predict the nasal width of a male gray kangaroo with a nasal length of 630 mm you get 227.6 mm. Since this skull is 235 mm it is probably not the same species.

To understand the early human activities in Callao Cave 50 thousand years ago and the discovery of various human skeletons, identify the specific human species to which these skeletons belong by selecting the correct option?*A. Homo LuzonisB. Homo MindanenesC. Homo TabonD. Homo Visayeses

Archaeological evidence of early humans, before the homo erectus, are confined to which of the following continent?a.South Americab.North Americac.Africad.Eurasia

Scientists [have] announced the discovery of a never-before-seen human relative, now known as Homo naledi, in a South African cave. The site yielded more than 1,500 bone fragments. That rich fossil cache revealed much about the creatures, yet it left one glaring question unanswered: when did Homo naledi live? The scientists had no evidence for how old the fossils were. Without that information, it was very hard to know where the new species fits on the tangled human family tree, and to figure out its true meaning.Over time, anthropology’s situation has improved greatly with the introduction of new techniques like the measurement of radioactive isotopes that decay predictably over time. Radiocarbon dating can measure the age of the bones themselves. Other techniques, such as potassium-argon dating, can derive the age of surrounding volcanic rock. But even those methods are often limited. Radiocarbon dating works only on fossils 50,000 years or younger, not helpful for most of the 7 million years or so of human evolution. Potassium-argon dating can be applied to much older fossils, but it is useless where there are no volcanic rocks……Within the dark chamber where naledi was found, there were no convenient volcanic rocks. The lack of age information is especially confounding because Homo naledi contains such an odd mixture of morphologies. Some of the fossils’ traits look very modern, for example their human-like hands and feet; others look remarkably ancient, for instance their primitive shoulders and hips. The evolutionary implications of naledi would look entirely different if the fossils were 2 million versus 20,000 years old - and either is possible. A creature with a modern, delicate hand resembling those of modern humans would present a baffling surprise if it lived 2 million years ago. Conversely, a primitive shoulder that appears to be built for climbing would make sense millions of years ago, but doesn’t fit with our ideas about hominin lifestyles in the more recent past. One scientist went so far as to claim that without a convincing measured age, the naledi fossils reveal almost nothing about human evolution.On the other hand, the story of Neanderthals shows how far we’ve come. Using radiocarbon dating, we now know that Neanderthals lived from about 400,000 years ago to 40,000 years ago. Throughout the 20th century, scientists refined these dates using increasingly creative techniques, such as measuring light produced by heated crystals to derive their precise compositions. This knowledge has allowed us to prove that Neanderthals preceded but overlapped with (and occasionally interbred with) modern Homo sapiens.While they wait for similar dating breakthroughs for naledi, some scientists see the lack of an established age as an opportunity in disguise. It allows them to focus on the fossil’s anatomy without being biased by information about its chronology. Anthropologists don’t need to study naledi in isolation; they can compare it - statistically, morphologically, visually - to other known hominins. By focusing on the fossil’s feel rather than its taste, these comparisons move us closer to understanding where Homo naledi fits on the family tree. Even without knowing an exact when, they bring us closer to knowing who we are.Question 16According to the passage, the contrasting physical characteristics of Homo naledi and its potential age imply all of the following EXCEPT:Examining Homo Naledis physical traits contributes nothing to our understanding of human ancestry and evolution.The unusual mix of morphological characteristics showed very modern and remarkably ancient features.Delicate features like the hands resembling those of modern humans evolved much earlier than previously understood.Ancient traits like shoulders built for climbing suitable for ancient hominin lifestyles persisted longer than believed.

The oldest (7 million year old) recognizable fossils ancestors that lead to humans include:Group of answer choicesAustralopithecus afarensis.Paranthropus.Sahelanthropus tchandensis.Orrorin tugenensis.