Big trends in human evolution
Download
1 / 26

Big Trends in Human Evolution - PowerPoint PPT Presentation


  • 311 Views
  • Uploaded on

Big Trends in Human Evolution. Introduction – Human Evolution. Mosaic Evolution: ________________________ With respect to human evolution: _____________________ Developed at varying times along our evolutionary history . But how did we get here?. 1. 2. 3. 4. 5.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Big Trends in Human Evolution' - deron


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Big trends in human evolution

Big Trends in Human Evolution


Introduction human evolution
Introduction – Human Evolution

  • Mosaic Evolution: ________________________

  • With respect to human evolution:

  • _____________________

  • Developed at varying times along our evolutionary history


But how did we get here
But how did we get here?

  • 1.

  • 2.

  • 3.

  • 4.

  • 5.


Anatomical adaptations for bipedalism
Anatomical Adaptations for Bipedalism

  • ___________

    • Increase in ________

    • Changes to hallux

    • __________

  • _______________

    • _____________________



Anatomical adaptations for bipedalism2
Anatomical Adaptations for Bipedalism

  • _______________________

    • Increase in surface area

    • Extension ____________

    • __________ - angled towards the middle of the body


Anatomical adaptations for bipedalism3
Anatomical Adaptations for Bipedalism

4. Pelvis

  • _____________________

  • ______________________


Anatomical adaptations for bipedalism4
Anatomical Adaptations for Bipedalism

5. _________________

  • ____________________


Morphological changes
Morphological Changes

  • 6. Foramen Magnum – _______________________

Bipedal – ____________________

Quadrupedal – ______________________



Pre dating australopithecus
Pre-dating Australopithecus

  • Hominins discovered in _________________

  • Bipedal – debatable in some species

  • We will focus on the species for which there is ________________of bipedalism


Ardipithecus ramidus
Ardipithecusramidus

  • Middle Awash area of Ethiopia

  • Approximately 4.4mya

  • Found:

    • 1.

    • 2.

    • 3.


Ardipithecus ramidus1
Ardipithecus ramidus

  • Indicators of Bipedalism

    • ____________________

    • Femur and pelvis

    • Humerus – _______________

    • Foot Phalanges ______________



Ardipithecus ramidus3
Ardipithecus ramidus

  • Ardi = “facultative” biped

    • What do you think this term mean?


Australopithecus afarensis
Australopithecus afarensis

  • _______________

    • Hadar, Ethiopia

    • Laetoli, Tanzania

  • 3.6-3.0 mya

  • Forest, woodland, grassland


A afarensis traits
A. afarensis – Traits

Bipedal

  • 1.

  • 2.

    Some Arboreal Abilities Retained

  • 1.

  • 2.


A afarensis traits1
A. afarensis – Traits


A afarensis traits2
A. afarensis – Traits


Type fossil lucy
Type Fossil – “Lucy”

  • Found: 1974, Hadar, Ethiopia

  • ____________________

    • Both arms

    • Much of the pelvis

    • Left femur, right tibia

    • Hand and Foot bones

  • Adult (based on 3rd molar)

    • _____________


Type Site: Laetoli Footprints

  • Tanzania

  • 3.6 mya

  • 75 feet long preserved

    • _____________

  • ___________

    • ______________


A new hominin
A New Hominin

  • Australopithecus sediba

    • Discovered in 2008; located in South Africa

    • Proposed by some to be the best candidate __________ _________________


A new hominin1
A New Hominin

  • Features:

    • ________________

    • Pelvis – ________ of Australopithecus-like and Homo-like features

    • Hand –

    • Foot & ankle shape –


The genus homo overall trends
The Genus Homo – Overall Trends

  • Characterized by:


Introduction to homo habilis
Introduction To Homo habilis

  • Contemporaneous with _______________________

  • Anatomically different than specimens assigned to the genus _______________________

  • Distinguishing feature – _________________

    • H. habilis shows an ___________________as compared to Australopithecines


Homo habilis oh 24
Homo habilis – OH 24

  • Location: Olduvia Gorge

  • (Africa)

  • Comparison to Australopithecines:

    • 1.

    • 2.

“Twiggy” or OH 24

Dated to ~ 1.8mya


ad