Lab 7 Answer sheet 2_TB

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University of Colorado, Denver *

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1303

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Anthropology

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Apr 3, 2024

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Lab 7 Answer sheet: Early hominids & Bipedalism Hens chapter 13 Name: ________Tugi B__________________ Please save this answer sheet to your computer, rename with your name according to the directions, fill out your answers, and then submit it to the appropriate dropbox. Post Lab 1 What is the purpose of a diastema? It chambers the projecting canine in an ape. It helps maintain a sharp edge for each tooth that is used to cut up fruits and leaves. Post Lab 3 Does this foot belong to a human or ape? Name THREE characteristics that helped you decide. This foot is characteristic of an ape, featuring elongated toes for grasping, a hallux that diverges from the others, and an absence of a longitudinal arch. Post Lab 4 Does this pelvis belong to a human or ape? Name TWO features that helped you decide. This pelvis belongs to a human. It has a short and broad pelvic girdle. And the iliac blades are curved around. Post Lab 8 Does this palate belong to a human or ape? How can you tell? It belongs to an ape. It has parallel tooth rows. Post Lab 9 Fill in the following chart for humans and apes. Ape Human Sectorial premolar (yes/no) yes no Diastema for canine (yes/no) yes no C/P3 hone (yes/no) yes no Molar enamel (thick/thin) yes yes

Tooth rows (parallel/ parabolic) parallel parabolic Brain size (in cc) 350-400cc 1300-1400cc Foramen magnum location posteriorly anteriorly Vertebral column straighter S shaped Pelvic girdle Tall and narrow Short and broad Femur/Knee Verus knee Valgus knee Foot, arches (#) Just transverse Transverse and longitudinal arch Foot, hallux divergent Big and non divergent Foot, toe length long short Gluteal muscles Acts as hip extensor Attached to the posterior iliac Post Lab 14 How old do you think the Taung child was at death? Do you think it aged like an ape or human or something in between? I believe Taung was 4 at death and they aged somewhere between an ape and human Post Lab 15 A. Name at least TWO features in the australopithecines that are still ape-like. Small body size and an increase in craniodental robusticity B. Name THREE features of skull (not teeth) used to distinguish the robusts from the graciles. A sagittal crest, nuchal crest for insertion of nuchal musculature, and postorbital constriction for insertion of the temporalis muscle C. Name THREE dental features that distinguish the robusts from the graciles. Small anterior teeth, large cheek teeth, and a large mandible

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Lab 7 Answer sheet 2_TB

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