Class Notes (839,094)
United States (325,776)
Anthropology (136)
ANT 301 (51)
Chris Kirk (19)
Lecture

Australopithecine Adaptations The Big Picture

2 Pages
52 Views

Department
Anthropology
Course Code
ANT 301
Professor
Chris Kirk

This preview shows 80% of the first page. Sign up to view the full 2 pages of the document.
Description
Australopithecine Adaptations: The Big Picture Monday, April 15, 2013 2:26 PM Australopithecine Brains •From ~7 to 3 MYA, only a slight trend toward increased brain size •Sahelanth: 320 cc •Au. Afrarensis: 430 cc •A*** •Australopiths have ape-sized brain and cranium that is porgnathic with large, robust facial skeleton Cheek Teeth •Thick enamel • Large •New diet •Tougher food items? •More resistance to wear? (Bipedal connection) •Ancestral Condition (Primitive e.g., chimps, Dryopithecus?) o Ripe fruit o Thinner enamel o Smaller cheeck •Most Australopiths (Derived) o Tougher, harder, and/or more abrasive food items (e.g., nuts, tubers?) o Thicker enamel o Larger cheek teeth Canines •Get smaller through time •Lose honing faucet •Possible implications 1. Reduced competition? 2. New diet? 1. Tool use? Remember: Common chimps use tools LCA of Pan and Australopithecus probably had the capacity, but earliest stone tool use. Locomotion •Habitually bipedal when on ground, but retain climbing adaptations A. Why become bipedal anyway? •Bipedalism is a silly way to get around… slow, back problems, broken hips, etc. •Greater efficiency o Knuckle walking a good compromise for retaining arboreal features, but is inefficient o Bipedal walking is hi
More Less
Unlock Document

Only 80% of the first page are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit