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9/19/2013 1 EVOLUTION Biology 145 Lecture 5 – The Late Proterozoic, The Cambrian Explosion, and Paleozoic

EVOLUTION L05 Paleozoic F13 - Claremont Collegesfaculty.jsd.claremont.edu/dmcfarlane/bio145mcfarlane/PPT...EVOLUTION Biology 145 Lecture 5 –The Late Proterozoic, The Cambrian Explosion,

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Page 1: EVOLUTION L05 Paleozoic F13 - Claremont Collegesfaculty.jsd.claremont.edu/dmcfarlane/bio145mcfarlane/PPT...EVOLUTION Biology 145 Lecture 5 –The Late Proterozoic, The Cambrian Explosion,

9/19/2013

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EVOLUTIONBiology 145

Lecture 5 –The Late Proterozoic, The Cambrian Explosion, and Paleozoic

Page 2: EVOLUTION L05 Paleozoic F13 - Claremont Collegesfaculty.jsd.claremont.edu/dmcfarlane/bio145mcfarlane/PPT...EVOLUTION Biology 145 Lecture 5 –The Late Proterozoic, The Cambrian Explosion,

9/19/2013

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Page 3: EVOLUTION L05 Paleozoic F13 - Claremont Collegesfaculty.jsd.claremont.edu/dmcfarlane/bio145mcfarlane/PPT...EVOLUTION Biology 145 Lecture 5 –The Late Proterozoic, The Cambrian Explosion,

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Dickinsonia

Ediacaran Fauna

Page 4: EVOLUTION L05 Paleozoic F13 - Claremont Collegesfaculty.jsd.claremont.edu/dmcfarlane/bio145mcfarlane/PPT...EVOLUTION Biology 145 Lecture 5 –The Late Proterozoic, The Cambrian Explosion,

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Anomalocaris

Burgess Shale

505 million; middle Cambrian

Page 5: EVOLUTION L05 Paleozoic F13 - Claremont Collegesfaculty.jsd.claremont.edu/dmcfarlane/bio145mcfarlane/PPT...EVOLUTION Biology 145 Lecture 5 –The Late Proterozoic, The Cambrian Explosion,

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Page 6: EVOLUTION L05 Paleozoic F13 - Claremont Collegesfaculty.jsd.claremont.edu/dmcfarlane/bio145mcfarlane/PPT...EVOLUTION Biology 145 Lecture 5 –The Late Proterozoic, The Cambrian Explosion,

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Opabina

Marella

Wiwaxia

Hallucigenia

Page 7: EVOLUTION L05 Paleozoic F13 - Claremont Collegesfaculty.jsd.claremont.edu/dmcfarlane/bio145mcfarlane/PPT...EVOLUTION Biology 145 Lecture 5 –The Late Proterozoic, The Cambrian Explosion,

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~ 25 body plans (bauplans)  ‐ ~ 19 extinct 

Historical Contingency

Biodiversity of the Burgess shale

Page 8: EVOLUTION L05 Paleozoic F13 - Claremont Collegesfaculty.jsd.claremont.edu/dmcfarlane/bio145mcfarlane/PPT...EVOLUTION Biology 145 Lecture 5 –The Late Proterozoic, The Cambrian Explosion,

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~ 20,000 species, 10 orders.

TRILOBITES

Page 9: EVOLUTION L05 Paleozoic F13 - Claremont Collegesfaculty.jsd.claremont.edu/dmcfarlane/bio145mcfarlane/PPT...EVOLUTION Biology 145 Lecture 5 –The Late Proterozoic, The Cambrian Explosion,

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12,000  (350 living)

BRACHIOPODS

Page 10: EVOLUTION L05 Paleozoic F13 - Claremont Collegesfaculty.jsd.claremont.edu/dmcfarlane/bio145mcfarlane/PPT...EVOLUTION Biology 145 Lecture 5 –The Late Proterozoic, The Cambrian Explosion,

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GRAPTOLITES

ECHINODERMS

Crinoids

Page 11: EVOLUTION L05 Paleozoic F13 - Claremont Collegesfaculty.jsd.claremont.edu/dmcfarlane/bio145mcfarlane/PPT...EVOLUTION Biology 145 Lecture 5 –The Late Proterozoic, The Cambrian Explosion,

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