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Encyclopedia of Evolution.pdf - Online Reading Center

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Neandertals<br />

different species <strong>of</strong> human. Only much later were the Gibraltar<br />

specimens, which were lying in a museum, recognized as<br />

also being Neandertal remains.<br />

Then in 1856, some obviously human limb bones, pelvis,<br />

and portion <strong>of</strong> a cranium were found by workmen excavating<br />

the Feldh<strong>of</strong>er Grotto in a limestone cliff in Germany. The<br />

cliff overlooked the Neander Valley (Neander-thal in German)<br />

through which the Düssel River flows toward its confluence<br />

with the Rhine at Düsseldorf. The valley was named<br />

after Joachim Neander, a 17th-century teacher and theologian<br />

who became famously controversial when he refused to<br />

take Holy Communion. The Neander Valley was to become<br />

famously controversial once again. The workmen brought the<br />

bones they had unearthed to a local schoolmaster and amateur<br />

naturalist, Johann Fuhlrott. Fuhlrott contacted Hermann<br />

Schaaffhausen, an anatomist at the University <strong>of</strong> Bonn. The<br />

cranium was human but had features, particularly a prominent<br />

eyebrow ridge <strong>of</strong> bone, not found in modern people.<br />

Fuhlrott and Schaaffhausen jointly presented the news <strong>of</strong><br />

the discovery to scientists in Bonn in 1857, suggesting (two<br />

years before Charles Darwin published his famous book) that<br />

a “barbarous and savage race” had once occupied the cave<br />

(see Darwin, Charles; origin <strong>of</strong> species [book]). When<br />

Huxley wrote Man’s Place in Nature in 1863, he included<br />

a sketch <strong>of</strong> the Neander Valley specimen as evidence <strong>of</strong> the<br />

animal origins <strong>of</strong> the human species (see Huxley, Thomas<br />

Henry). William King, student <strong>of</strong> Charles Lyell and a pr<strong>of</strong>essor<br />

<strong>of</strong> geology at Queen’s College in Belfast, Ireland, proposed<br />

the scientific name Homo neanderthalensis for this race<br />

<strong>of</strong> people, recognizing them as a separate species.<br />

Some scholars who maintained the separate creation<br />

<strong>of</strong> modern humans dismissed the skeletal fragments as<br />

being merely deformed modern individuals. (To this day,<br />

both creationist books and some evolution museums present<br />

reconstructed Neandertals in modern dress and grooming,<br />

with the caption, “Have you seen this man?”). August<br />

Mayer, a pathologist at the University <strong>of</strong> Bonn, claimed as<br />

late as 1864 (after the publication <strong>of</strong> both Darwin’s and<br />

Huxley’s books) that the bones were from a Cossack soldier<br />

who was wounded in the Napoleonic war <strong>of</strong> 1814 and had<br />

climbed into the cave to die. Huxley retorted that it was<br />

remarkable that a mortally wounded soldier would crawl<br />

60 feet up a cliff, remove all clothing and belongings, seal<br />

the cave, and bury himself under two feet <strong>of</strong> soil. Another<br />

anthropologist noted a poorly healed arm fracture and<br />

speculated that the Neandertal had grown his brow ridge<br />

because <strong>of</strong> frowning in pain. The anatomist Rudolf Virchow<br />

claimed that the Neandertal specimens were merely<br />

modern people.<br />

But it was not long before nearly everyone recognized<br />

that the Neandertals were a very ancient race <strong>of</strong> people. Their<br />

physical features (described below) contrasted noticeably not<br />

only with those <strong>of</strong> modern humans but also with the Cro-<br />

Magnon “cave men” that also lived in Europe. In scientific<br />

theory and in the popular mind, Neandertals were seen as<br />

the crude ancestors <strong>of</strong> the refined and noble Cro-Magnon.<br />

According to most scholars through the middle <strong>of</strong> the 20th<br />

century, Neandertals evolved into modern Europeans. The<br />

current scientific explanation is quite different and is presented<br />

below.<br />

Where Did Neandertals Come From?<br />

Between 300,000 and 200,000 years ago, the hominins that<br />

lived in Europe (usually classified as Homo heidelbergensis,<br />

named after the Heidelberg Man fossil; see missing links)<br />

had begun to evolve characteristics that were similar to<br />

Neandertals; in particular, larger brains. By about 120,000<br />

years ago, throughout Europe and adjacent regions <strong>of</strong> Asia,<br />

the set <strong>of</strong> characteristics that scientists associate with Neandertals<br />

had evolved. Neandertals, therefore, probably evolved<br />

in Europe and migrated to adjacent areas.<br />

What Did Neandertals Look Like?<br />

Scientists have recovered bones <strong>of</strong> more than 275 individuals,<br />

and stone artifacts from many sites occupied by Neandertals:<br />

They had brains as large as those <strong>of</strong> modern humans.<br />

The shape <strong>of</strong> the Neandertal brain, however, was different.<br />

The frontal lobe was smaller (their foreheads sloped more<br />

than those <strong>of</strong> modern humans) but the occipital lobe (in back)<br />

was larger. Some people cite the smaller frontal lobe as evidence<br />

<strong>of</strong> lesser intelligence, and others cite the larger occipital<br />

lobe as evidence that Neandertals had enhanced sensory perception<br />

(e.g., smell), but this is speculative.<br />

Their skulls had distinctive features. In particular, they<br />

had supraorbital processes, otherwise known as brow ridges.<br />

Earlier hominins also had brow ridges, but the double Neandertal<br />

brow ridge is unique. It is generally assumed that these<br />

thick ridges protected the eyes from injury, to which Neandertals<br />

were especially prone (see below). Other distinctive<br />

features included the lack <strong>of</strong> a prominent chin, and very large<br />

teeth. Wear marks on the teeth suggest that they actually used<br />

their teeth as vise clamps by placing objects <strong>of</strong> stone or wood<br />

or bone in their mouths and working on them with stone<br />

tools.<br />

They were relatively short. Neandertals were less than six<br />

feet (2 m) in height—well within the range <strong>of</strong> modern humans,<br />

but shorter than the average human. Their limbs were shorter<br />

and stockier. The explanation usually given for this is that<br />

they evolved in a cold climate. Modern humans such as the<br />

Inuit who are physically adapted to cold climates also have<br />

short limbs. This feature reduces the amount <strong>of</strong> surface area<br />

that is exposed to cold conditions and therefore reduces the<br />

loss <strong>of</strong> body heat. The Neandertals became extinct during the<br />

most recent <strong>of</strong> the ice ages, but probably not because it was<br />

an ice age. They had survived a previous ice age in Europe.<br />

They had survived equally well in the relatively warm interglacial<br />

period following the previous ice age.<br />

They were very strong. Not only were their limbs short,<br />

but the muscle attachment sites (recognizable on fossil bones)<br />

were quite extensive. In fact, their muscles were apparently so<br />

strong that continual use <strong>of</strong> muscles caused the bones to bend.<br />

Aside from these things, scientists know little about what<br />

the Neandertals looked like. Reconstructions usually show<br />

them as looking like modern humans except for the skeletal

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