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BIOL 103 Extra Credit Assignment: Fossil Traces of Earth's Past, Assignments of Biology

An extra credit assignment for biol 103 students, provided by dr. Gendron. The assignment requires visiting the university museum exhibit and answering questions related to the geological history of sea creatures, the evolution of eukaryotes, and the distribution of fossils. Students must answer the questions individually and in their own words.

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Pre 2010

Uploaded on 08/19/2009

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BIOL 103 – 2008 Dr. Gendron
Extra Credit Assignment
The Lost World of Sea Creatures and Meat Eaters:
Fossil Traces of Earth’s Past
For up to 5 points extra credit (added to your lecture grade) visit the exhibit at the University
Museum in Sutton Hall (first floor) and answer the questions below. I must receive your
answers by December 4. Each person is required to do the assignment individually and to
answer the questions in his/her own words.
The exhibit is organized by geological age, with the oldest specimens first. Pick up the Self-
Guided Tour pamphlet when you sign in to guide you.
1. As you move through the exhibit you will note that some geological eras ended with mass
extinctions. Describe what caused each one.
End of Ordovician
Late Devonian
Terminal Permian
Late Cretaceous
Which of these was the most devastating in terms of percentage of species wiped out?
Room A
2. Among the earliest known fossils are the “stromatolites.” What sort of organism produced
these?
How old are they?
Explain why it is likely that life appeared even earlier than this.
What is a eukaryote (should know this from class) and what change in the atmosphere made
it possible for them to evolve?
pf2

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BIOL 103 – 2008 Dr. Gendron Extra Credit Assignment

The Lost World of Sea Creatures and Meat Eaters:

Fossil Traces of Earth’s Past

For up to 5 points extra credit (added to your lecture grade) visit the exhibit at the University Museum in Sutton Hall (first floor) and answer the questions below. I must receive your answers by December 4. Each person is required to do the assignment individually and to answer the questions in his/her own words. The exhibit is organized by geological age, with the oldest specimens first. Pick up the Self- Guided Tour pamphlet when you sign in to guide you.

  1. As you move through the exhibit you will note that some geological eras ended with mass extinctions. Describe what caused each one. End of Ordovician Late Devonian Terminal Permian Late Cretaceous Which of these was the most devastating in terms of percentage of species wiped out? Room A
  2. Among the earliest known fossils are the “stromatolites.” What sort of organism produced these? How old are they? Explain why it is likely that life appeared even earlier than this. What is a eukaryote (should know this from class) and what change in the atmosphere made it possible for them to evolve?

BIOL 103 – 2008 Dr. Gendron Room C

  1. Explain in your own words, using one of the species described on the poster, how the distribution of fossils on the continents today shows that these continents were once joined.
  2. What group of reptiles gave rise to the mammals? Room D (southern half)
  3. When did modern humans evolve? Room E (southern half)
  4. Look at the limbs of the mosasaur on the wall. In life these would have been flippers used for swimming. What skeletal feature of the flippers indicates that these marine reptiles evolved from land-living ancestors? Room D (northern half)
  5. What evidence presented here indicates that Australopithecus afarensis walked upright?
  6. For how long did Homo sapiens and H. neanderthalensis coexist?