Assignment 5 - The Genus Homo (1)

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University of British Columbia *

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140

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Anthropology

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Dec 6, 2023

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ARCL 140 Assignment 5: The Genus Homo 25 Points Upload your submission to Canvas as a PDF. 1. How are the lower dentition of H. habilis and australopithecus different from one another? (4 points) - Homo habilis has thinner enamel compared to A. afarensis - Homo habilis has less pronounced incisor compared to A.afarensis - Homo habilis has smaller molars compared to A. afarensis - Habilis has wider dental arcade compared to A. afarensis 2. How is the H. habilis cranium different from the Au. africanus cranium? (3 points) - H. habilis has less facial prognathism compared to Au. africanus - H. habilis has larger cranial capacity compared to Au. Africanus - H. habilis has smaller, less pronounced brow ridge compared to Au. Africanus

- H. habilis

Au. africanus 3. List three features of the cranium found in H. erectus that are derived, compared to Au. africanus . (3 points) - Occipital torus - Pronounced brow ridge - Receding forehead 4. How is the H. heidelbergensis cranium similar to the H. ergaster cranium and how are they different? (5 points) - They both have a strong, pronounced brow ridge - They both have a sagittal crest - H. heidelbergensis cranium has cranial sutures while H. ergaster does not - H. heidelbergensis has more facial prognathism compared to H. ergaster - H. heidelbergensis has a more narrow cranium, compared to H. ergaster. This is mainly because the zygomatic arches of the H. ergaster are larger and much more pronounced

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H. heidelbergensis (Kabwe)

H. ergaster (KNM-ER 3733) 5. Observe the H. neanderthalensis skull. List 5 characteristics of the cranium that are different from modern humans. (5 points) - H. neanderthalensis has more defined brow ridge compared to modern humans - H. neandethalensis has more facial prognathism compared to modern humans - H. neanderthalensis has no cranial sutures, while modern humans have it - H. neanderthalensis has longer slope on posterior portion compared to modern humans - H. neanderthalensis has larger, wider nasal bone compared to modern humans

H. neanderthalensis (La Chapelle aux Saints) 6. What similarities do you see between Homo floresiensis and Homo habilis cranium (2 points) - Thick brow ridge - Facial prognathism 7. What similarities do you see between Homo floresiensis and Homo erectus cranium (3 points) - Slight Saggital crest - Similar occipital torus - Thick cranial vault bones

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Assignment 5 - The Genus Homo (1)

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