18 Questions
What is the approximate age of the skulls KNM-ER 1470 and KNM-ER 1813?
1.9 million years
What is a notable difference between the teeth of KNM-ER 1470 and KNM-ER 1813?
KNM-ER 1470 had larger molars
What is the traditional view of human evolution?
Humans evolved in a single lineage
How many species of Homo are recognized to have lived in the Turkana Basin?
Four
What is notable about the browridge of KNM-ER 1813?
It was strongly developed
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
What is a characteristic of the modern human skull?
Thin-walled and high vaulted
What is a distinct feature of modern human faces compared to early humans?
Less heavy brow ridges and prognathism
What is unique about the naming of Homo sapiens compared to other human species?
It does not have a true type specimen
Who first described Homo sapiens in 1758?
Carolus Linnaeus
What is the term used to refer to members of our own species who lived during prehistoric times?
Anatomically modern Homo sapiens
What is the current status of Edward Drinker Cope's remains?
They are held by the University of Pennsylvania
What is the estimated time range during which Homo erectus lived?
Between 1.89 million and 143,000 years ago
What is a distinctive feature of early African Homo erectus fossils?
Modern human-like body proportions with elongated legs and shorter arms
What is the significance of the 'Turkana Boy' fossil discovery?
It is one of the most complete fossil skeletons of Homo erectus
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
What does the microscopic study of the 'Turkana Boy's' teeth indicate?
He had a growth rate similar to that of a great ape
What is suggested by fossil evidence of Homo erectus?
They cared for old and weak individuals
Compare the characteristics of two 1.9 million-year-old human ancestor skulls, KNM-ER 1470 and KNM-ER 1813, including their brain size, face shape, and dental features.
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