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 10, Problem 5ER
Summary Introduction
To explain: The role of climate fluctuations in the appearance as well as the evolution of the first hominins.
Introduction: Hominin is a term used frequently to indicate the human lineage’s extinct members. Significant diversity was observed in all the anatomical characteristics of the first hominins.
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Which hominins might be ancestral to us?
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- What are the two significant morphological developments that occurred in hominins, and how did they contribute to their success?arrow_forwardWhat is a hominin?arrow_forwardWhich hominins might be ancestral to us choose one that you find especially interesting (except H. sapiens) and explain how it fits into the picture of the Hominin family?arrow_forward
- Write briefly about the "hobbit" species of hominin. What are the theories about its evolution? What was the species like? When and where did it exist? (Homo floresiensis)arrow_forwardWhat does hindlimb shape say about the ancestry of dolphins and other cetaceans?arrow_forwardIf you found hominin fossils next to Oldowan tools, what species would you expect that the bones belong to?arrow_forward
- Explain the change in the classification of hominids in recent years. What hominoids are we now considered to be most closely related to?arrow_forwardWhile listening to a hominin evolution podcast, the narrator mentions that the overall similarity of Homo erectus fossils from Africa, Asia, and Europe, and through time represents evolutionary statis. What evidence is there that this is not the case? A. The size of the teeth and jaws increased from earlier to later forms. B. There was an overall increase in cranial robusticity from earlier to later forms. C. The thickness of the cranial bone increased from earlier to later forms. D. Brain size increased by approximately 30% from earlier to later forms.arrow_forwardHow does the hypothesized origin of modern humans (Homo sapiens) differ from the hypothesized origin of Neanderthals (Homo neanderthalensis)?arrow_forward
- What characteristics are shared between monotremes and placental mammals but not marsupials? What would this observation lead to conclude about the order in which these animals evolved?arrow_forwardDoes the evolution of the hominins support a scenario of slow, incremental change or punctuated equilibrium? Explain.arrow_forwardWhich 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_forward
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