Class notes
ANTH 201 Full Course Notes
- Institution
- University Of Calgary (UCalgary )
ANTH 201 Full Course Notes
[Show more]
Seller
Follow
Content preview
10/25/2022CHAPTER 9
HOMININ ORIGINS:
FROM APE
TO AUSTRALOPITHECINE
AFRICA: THE “CRADLE OF HUMANITY” (OR
AT LEAST THE EARLY HOMININS…) Memorize the names and
people fossils
1925 Dartin Brome
Darwin ‐ Africa as the
birthplace of humanity –
why?
Piltdown Hoax – 1912 ‐
1953
Taung baby – Raymond
Dart, 1925 Australopithecus
LUMPERS AND SPLITTERS Noright or wronganswers
Since then (1950s) LOTS of Speciose same as splitter
new material, lots of new
Lumpers Typicalvariation in fossils
taxa
Speciose vs Less speciose
Lumpers vs Splitters so theylumpthemall together
Splitters Separatingfossilsbased
Names not necessarily
permanent
Box 9.1 of the text
on thelook of thefossils
, 10/25/2022
OUR EARLIEST ANCESTORS Based on geneticevidance
4‐7 ma GorillaBranchesoff beforehuman
Chimp – Human split ma
Ape + hominin characteristics,
but disagreement about what makingknucklewalkingprimative
LCA
hominins inbetween apeand
Proto
the LCA actually looked like
Protohominins
Very few panini or gorillanini
fossils earlyhominins
Slow or fast speciation?
See Box 9.2 The two lines may
have been interbreeding for a
million years
ALTERNATIVE MODELS Alt models don'tmemorize
Alternative models of the hominin–panin last common ancestor (LCA). The branching pattern of living
apes as inferred from genomic data is agreed upon; however, reconstruction of ancestral nodes differs
among researchers. (A) In the African ape (AA) model, hominins derive from a knuckle-walking
African ape-like LCA, typically conceived of as chimpanzee-like. (B and C) Ape convergence (AC)
models hypothesize that the LCA is either a more generalized great ape or an unknown primitive
ancestral Miocene ape. AQ, arboreal quadrupedalism
WHAT WAS IT LIKE IN EAST AFRICA AT THAT
Forestbreaking becoming
TIME? up dryerclimatechange
Mosaic habitat in East Africa at Sav ouradaptationsinresponseto growingSav
this time (spatial)
SpecAnyalterationto habitat couldbe
Climate changing (temporal)
detrimental to survival of species
Savannah hypothesis
Forest hypothesis
Variability selection hypothesis Gen takes advantageof different
(generalist better than
specialist) habitats
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller justismacmaster. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$11.81. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76449 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now