Early Homo 2010 - Early Homo The earliest hominids(humans...

Info icon This preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
Early Homo The earliest hominids (humans) walked bipedally Their brains were still ape-size Even though they walked on two legs, they could still climb trees better than us today How can we tell they are bipedal? Cranial: location of foramen magnum Postcranial: shape of pelvis, knee, foot anatomy
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Hominids (bipedal) Earliest bipedal hominids from around 6 mya Four genera of interest to us: 1. Ardipithecus 5.8-4.4 mya, e Africa 2. Australopithecus 4.2-2.3 mya, e and s Africa 3. Paranthropus 2.5-1.0 mya, e Africa 4. Homo 2.5 mya to present
Image of page 2
Several candidates have been proposed for the first hominid, dating as early as 7 mya in Africa Here I concentrated on Ardipithecus , 5.8-4.4 mya, east Africa Ardipithecus ramidus 4.4 mya
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Following Ardipithecus , at least five species of A ustralopithecus/Paranthropus Generally divided into two types: Gracile: A. anamensis , A. afarensis , A. africanus Robust: P. robustus , P. boisei The gracile australopithecines are thought to have led to our genus, Homo A. afarensis P. boisei
Image of page 4
Early hominids Australopithecus (gracile), some thought to be our ancestors Paranthropus (robust), thought to be a separate lineage that went extinct (Turnbaugh et al. 2002:251) A. africanus A. afarensis P. boisei P. robustus robust gracile
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Artist John Gurche has reconstructed an Australopithecus afarensis face
Image of page 6
Australopithecus afarensis (Stanford et al. 2006:334)
Image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
(Stanford et al. 2006:330) Postcranial comparisons
Image of page 8
At the end of the Pliocene, between 3.2-1.8 mya we find several types of hominid: Australopithecus africanus (gracile) (3.2-2.3 mya) Paranthropus boisei (robust) (2.5-1.4 mya) Paranthropus robustus (robust) (2.5-1.0 mya) Homo habilis (2.5-1.8 mya)
Image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Homo first appears 2.5 mya in east and south Africa What led us to put this early hominid into our genus? Two related items: 1. Substantially larger brain, 20-50% larger 2. First use of stone tools
Image of page 10
The first species of Homo appear between 3-2 mya.
Image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern