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Lesson 05.03 Primate Evolution

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Joanna Torres

on 14 February 2014

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Transcript of Lesson 05.03 Primate Evolution

Lesson 05.03 Primate Evolution
Conclusion
Conclusion:
Be sure to answer the following reflection questions in the conclusion of your lab report:

1.Was your hypothesis correct? Which of the four species does the unidentified skull most resemble? Predict how you think it may relate to the other species in terms of evolution. Justify your answer with specific observations.
-Yes my observation was right! Well like i said in my hypothesis, the height of the skulls were pretty close resembling eachother, the unidentified skull was 51.36cm and the A. Afarensis skull was 53.20cm

2.How do the shapes of the face, forehead, and teeth differ between the various species?
-Faces, Teeth, Foreheads, are different their is not two skulls identically the same. It can be close but not exact. Every skull is uniquely That would be strange if everyone had the same skull

Data
Con. Conclusion
3.What do you think accounts for these differences? How might some of these differences be possible adaptations?
-I think it could be from their ancestors, thats why we have so many species of monkeys today, and not just one, so everyone is diffrent
4.In what way do you think the location of the foramen magnum relates to the movement of each species?
-The foramen is important cause its where the spinal cored connects to the brain. The foramen is also needed to keep your head up straight
5.What might the shape of the skull and the supraorbital height tell us about each species?
It probably the defines the gender or age or the species type
Skull Analysis
Safety Notes:

Skull casts are fragile, so always handle with care.
Materials:

Skull casts: 4 known species and 1 unknown
Calipers
Purpose:

Observe and compare physical features of primate skulls.
Examine possible relationships based on the observed features.
Hypothesis:
I think that its probably related to the A. Afarensis skull because of how long it is and how deep the eyesockets are


Skulls
Forehead
Face
Teeth
Foramen
Magnum
Brain
Activity
Supraorbital
Height
Pan Troglodytes
Homo Sapiens
Homo Erectus
Australopithecus
Unidentified
Vertical
Medium Bridge Ridges
Forehead Extends Above Eyes
Large Eyes

Vertical
Small Brow Ridges
Small Eyes
Forehead Not Extended Above Eyes
Horizontal
Medium Brow Ridges
Medium Size Eyes
Does Not Extend Above eyes
Vertical
Large Brow Ridges
Large Eyes
Does Extends Above Eyes
Horizontal
Medium Brow Ridges
Medium Eyes
Doesn't Extend Above The Eyes
Sloped
Vertical
Flattened
Sloped
Sloped
Long
Dull
Short
Dull
Short
Dull
Long
Sharp
Short
Dull
Rear
Front
Front
Rear
Rear
Oval
Squared Off
Like the Australopithecus Skull
Round
Squared Off
Unlike any other skull
Oval
Squared Off
Just like The Pan Troglodytes Skull
Oval
Pointed Off
Like The Undefined skull
Oval
Pointed Off
Like the Australopithecus Skull
55.76cm
67.70cm
61.88cm
53.20cm
51.36cm
Full transcript