In
this
diagram, variations in the skeletal systems of two early types of humans are described.
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Overall
, we can see that Australopithecus afarensis had a heavier body and much longer arms, Linking Words
while
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homo
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erectus
was slimmer and had more developed joints.
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To begin
with the upper half of the body, Australopithecus afarensis had a much broader chest and waist than Linking Words
homo
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erectus
, giving it a rounder appearance. The former had much longer arms and larger hands, which would have been useful for climbing trees.As for the lower half of the body, we can see that Use synonyms
homo
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erectus
had proportionately longer legs and larger hip, knee and ankle joints. The feet of Use synonyms
homo
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erectus
were Use synonyms
also
smaller and more arched, with shorter toes. These differences meant that Linking Words
homo
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erectus
was better suited to long-distance running.We can see significant changes in the development of early humans from the diagram. Use synonyms
Homo
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erectus
is more similar to contemporary human beings with its long legs and arched feet. The physical differences are clearly related to differences in the lifestyles of tree climbers and endurance runners.Use synonyms