Robert Clarkのインスタグラム(robertclarkphoto) - 1月4日 06時45分

I photographed this chimpanzee hand for my favorite story that I have worked on for the @ナショナルジオグラフィック, "Was Darwin Wrong"...the first work on the text for the story was ...NO...
The article shows dozens of different physical examples of Darwin's Theory

It turns out that human hands are more primitive than chimps' and orangutans', according to a study.

As an article about the study says..."Given our inherent human-centric viewpoint, we tend to think that our species is more advanced in all respects than other animals, but new research finds that human hands are more primitive than those of our closest primate ancestors: chimpanzees."
The study, published in Nature Communications, determined that while human hand proportions have changed little from those of the last common ancestor of chimps and humans, the hands of chimps and orangutans have evolved quite a bit.
"The findings suggest that the structure of the modern human hand is largely primitive in nature, rather than, as some believe, the result of more recent changes necessary for stone tool-making," says a spokesperson for The George Washington University.
Sergio Almécija, a scientist in the university's Center for the Advanced Study of Human Paleobiology, led the study, which was co-authored by Jeroen Smaers and William Jungers. Smaers and Jungers are researchers at Stony Brook University, where the research was conducted.
The researchers came to their conclusions after analyzing the hands of humans, chimps and orangutans, as well as the remains of hands for early apes like Proconsul heseloni and the hands of human ancestors, such as Ardipithecus ramidus and #Australopithecus #sediba.
Almécija and his team discovered that human hands today are not that different from those of the early human ancestors.
"Human hands are marked by a relatively long thumb when compared to the length of their four other fingers - a trait that is often cited as one of the reasons for the success of our species because it facilitates a 'pad-to-pad precision grip,'" Hiatt said.
Conversely, chimp hands are much longer and narrower. Since the thumb is not as long, it just meets up with the palm.

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