Fossil Evidence For Human Evolution Flashcards
What do fossils suggest to us
It gives us clue about what human ancestors were like
What do we get as evidence from fossils
It suggests that humans and chimpanzees evolved from a common ancestor that existed 6 million years ago
What are human beings and their ancestors are known as?
Hominids fossils
Why are they hominid fossils
Beaches there are several different hominid species that have been found
What does the fossil characteristics show
That between ape and humans, you can see how humans have evolved over time
Who is the first fossil Hominid and when was it around
Ardi, 4.4 million years old
Where was Ardi found
She was found Ethiopia
What do Ardi’s features show
They are a mixture of those found in humans and apes
What does the structure of Ardi’s feet suggest
That she climbed trees— she had an ape like big toe to grasp branches
What was Ardi’s brain size similar to
A chimpanzee
What else did Ardi have
Long arms and short legs ( more like an ape than a human )
What did the structure of Ardi’s legs suggest
That she walked upright like a human
What does the structure of Ardi’s hand homes suggest
She didn’t use her hands to help her walk ( like apes do )
What is the name of the next Hominid discovered after Ardi? And when were they around
Lucy, 3.2 million years old
Where was Lucy discovered
Ethiopia
What does Lucy have a mixture of
Human and ape features, but is more human like than Ardi
What did Lucy’s feet look like and what were they adapted for
She had arched feet, this allowed her to adapt to waking then climbing
What didn’t Lucy have on her feet
No ape like big toe
What was significant about Lucy’s arms and legs
It’s what you would expect to find in apes and humans
What was different about Lucy’s brain than Ardi’s
Her brain was slightly larger than Ardi’s but still a similar size to a chimp’s brain
How did we know that Lucy walked upright
The structure of Lucy’s leg bones, but more efficiently than Ardi
What was the first find Leaky found and when was it?
Turkana Boy, 1.6 million year old
What was Turkana Boy’s features
He has a mixture of human and ape like features , but is more human like than Lucy
What was significant about Turkana Boy’s short arms and long legs suggest?
That they are much more human like than an ape but his brain size is much larger than Lucy’s ( more similar to human brain size )
How was Turkana Boy’s even better adapted to
The structure of his feet and legs suggest he was better adapted to walking upright than Lucy
