Word: premolar
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Dates: during 1940-1940
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...scientists found some differences in the Sinanthropus and Pithecanthropus skull shapes, but also some exact resemblances, even in minor structural details. Peking Man's molar and premolar teeth are more primitive, but Java Man has a wide gap between his canines and incisors-an extremely apelike feature never before found in a human or nearly human creature. On the whole, the resemblances between Sinanthropus and Pithecanthropus led their analysts to regard them as "related to each other in the same way as two different races of present mankind, which may also display certain variations in the degree of their...
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