Our Origins: Discovering Physical Anthropology (Fourth Edition)
4th Edition
ISBN: 9780393614008
Author: Clark Spencer Larsen
Publisher: W. W. Norton & Company
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Chapter 11, Problem 4ER
Summary Introduction
To explain: How the substantial changes in anatomical features of H. erectus are part of an evolutionary feedback loop that is driven by biocultural adaptation.
Introduction: The genus Homo comprises modern humans as well as their close relatives. The hominin Homo erectus has appeared around 1.8 million years ago and it was considered as a descendant taxon of earliest hominin Homo habilis.
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- Which statement is NOT true about the early hominins: A) The angle of the foramen magnum on Sahelanthropus tchadensis ("Toumai") indicates a vertically oriented upper neck, a clear sign of bipedalism. B) The reconstructed skeleton of Ardipithecus ramidus ("Ardi") suggests she was adapted for bipedal walking and climbing in trees. C) Early hominins such as Sahelanthropus and Ardipithecus had small, chimp-sized brain. D) All of the above are true.arrow_forwardIs the evolution of the hominins according to punctuated equilibrium, or slow, incremental change? Explain why.arrow_forwardOutline the specific differences in the pelvis and the femur, and associated muscles, that are associated with the shift from quadrupedal locomotion in chimps to bipedalism in hominids and modern humans.arrow_forward
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