Neanderthals

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Were Neanderthals the same as modern humans, or were they an entirely different species? This is a major topic of debate among Anthropologists, and many people strongly argue each view, backing their opinion with evidence from physical remains and inferred ideas about behavior.
The proponents of the separate species hypothesis believe that they had a common ancestor, but Neanderthals and modern humans were separate species. They argue that the Neanderthal line was a dead end, and that for some reason Homo sapiens thrived while they went extinct.
Most of their evidence comes from the fossilized bones of Neanderthals and Cro- Magnons, or modern man’s ancestors (Shreeve, 150). There is a definite difference between their bone structures, and it may be a significant enough difference to divide them into species. There is a set of traits that distinguishes Neanderthals. Their general proportions are short, robust, and strong. Males and females of all ages have thick bones, and very pronounced muscle and ligament attachment sites. They also have distinct facial and cranial features. They have a large skull with no chin, a significant brow-ridge, and a large nasal opening (Shreeve, 49-150). They have large brains, around 1400cc, that protrude in the back, causing an occipital bun in the skull (Lecture, 4/19). Cro-Magnons on the other hand look more like humans do today. They are more slender and not as muscular, with chins and rounder skulls with slightly smaller brains among other traits.
From the ancient bones of the Neanderthals, scientists have been able to extract small amounts of DNA. The DNA comparisons to modern humans show no relationship, implying evolutionary separation (Kunzig, 159). Some anthropologists say the small sections of DNA found are not conclusive evidence, because modern humans show just as much variation in DNA. These people point out that individuals such as the “Portugal Kid” are hybrids of Neanderthals and modern humans, showing there was gene trading. One argument against this is that there is no skull from the ‘Portugal Kid” so it is hard to compare it to Neanderthals. Also, it is known that closely related species can breed and their offspring can be fertile, but they are still separate species (Kunzig, 161).
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...ro-Magnon. The chin however recedes slightly behind the teeth, which is typically a Neanderthal trait. The age of the fossil is interesting also, because 25,000 years ago Neanderthals weren’t around anymore, so the boy is essentially a modern human with Neanderthal traits (Kunzig, 160).
My own opinion on this issue is that from the evidence at hand, there is no way to know for sure whether or not the Neanderthals were our species. From the skeletal evidence, it is clear that they were anatomically different from modern humans, and we know that this is because of geographic isolation. We also know that they have been found in the same locations, and it appears at the same time. If they were truly part of our species, then there would have been blending of the two types in these places. Trying to determine this from fossilized bones from a tiny percent of the population, limited DNA, and imperfect dating methods is impossible. Even if anthropologists think they are sure of either viewpoint, there may be evidence out there that will prove them wrong. So at this point in time, I think both scenarios are equally possible.

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