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Human Ancestor Skull Comparison

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Questions and Answers

What is the approximate age of the skulls KNM-ER 1470 and KNM-ER 1813?

1.9 million years (correct)

2.5 million years

1.5 million years

2.0 million years

What is a notable difference between the teeth of KNM-ER 1470 and KNM-ER 1813?

KNM-ER 1813 had smaller incisors

KNM-ER 1470 had larger molars (correct)

KNM-ER 1470 had smaller molars

KNM-ER 1813 had larger canines

What is the traditional view of human evolution?

Humans evolved from multiple species

Humans evolved in a single lineage (correct)

Humans evolved from a single species

Humans evolved from multiple lineages

How many species of Homo are recognized to have lived in the Turkana Basin?

Four Signup and view all the answers

What is notable about the browridge of KNM-ER 1813?

It was strongly developed Signup and view all the answers

What is the name of the hypothesis that was challenged by the discovery of KNM-ER 1470 and KNM-ER 1813?

The single lineage hypothesis Signup and view all the answers

What is a characteristic of the modern human skull?

Thin-walled and high vaulted Signup and view all the answers

What is a distinct feature of modern human faces compared to early humans?

Less heavy brow ridges and prognathism Signup and view all the answers

What is unique about the naming of Homo sapiens compared to other human species?

It does not have a true type specimen Signup and view all the answers

Who first described Homo sapiens in 1758?

Carolus Linnaeus Signup and view all the answers

What is the term used to refer to members of our own species who lived during prehistoric times?

Anatomically modern Homo sapiens Signup and view all the answers

What is the current status of Edward Drinker Cope's remains?

They are held by the University of Pennsylvania Signup and view all the answers

What is the estimated time range during which Homo erectus lived?

Between 1.89 million and 143,000 years ago Signup and view all the answers

What is a distinctive feature of early African Homo erectus fossils?

Modern human-like body proportions with elongated legs and shorter arms Signup and view all the answers

What is the significance of the 'Turkana Boy' fossil discovery?

It is one of the most complete fossil skeletons of Homo erectus Signup and view all the answers

What is a notable innovation associated with the appearance of Homo erectus in the fossil record?

The earliest handaxes, a major innovation in stone tool technology Signup and view all the answers

What does the microscopic study of the 'Turkana Boy's' teeth indicate?

He had a growth rate similar to that of a great ape Signup and view all the answers

What is suggested by fossil evidence of Homo erectus?

They cared for old and weak individuals Signup and view all the answers