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Paleontology, Homology, and Evolution May 22, 2013

Paleontology, Homology, and Evolution

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Paleontology, Homology, and Evolution. May 22, 2013. Paleontology, Homology, and Evolution. Paleontologists use homology to understand the evolution of organisms!. Paleontology, Homology, and Evolution. Paleontologists use homology to understand the evolution of organisms! - PowerPoint PPT Presentation

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Page 1: Paleontology, Homology, and Evolution

Paleontology, Homology, and Evolution

May 22, 2013

Page 2: Paleontology, Homology, and Evolution

Paleontology, Homology, and Evolution

• Paleontologists use homology to understand the evolution of organisms!

Page 3: Paleontology, Homology, and Evolution

Paleontology, Homology, and Evolution

• Paleontologists use homology to understand the evolution of organisms!

DERIVED CHARACTERISTICS

Page 4: Paleontology, Homology, and Evolution

Derived Characteristics

• A trait that has been passed down from the ancestral organism

Page 5: Paleontology, Homology, and Evolution

Derived Characteristics

• A trait that has been passed down from the ancestral organism

– Multicellular– Vertebrates– Mammals

Page 6: Paleontology, Homology, and Evolution

Derived Characteristics

• Trace back to understand evolution– Good example are horses and their ancestors• Using a number of morphological traits, they can trace

back the ancestry of modern horses.

Page 7: Paleontology, Homology, and Evolution
Page 8: Paleontology, Homology, and Evolution

Whales

Page 9: Paleontology, Homology, and Evolution

Paleontology

• It is your job now to become the paleontologists and find what is in the soil.

Page 10: Paleontology, Homology, and Evolution

Paleontology

• Use the pictures of modern organisms to try and figure out what where the fossils come from!

Page 11: Paleontology, Homology, and Evolution
Page 12: Paleontology, Homology, and Evolution

What did your fossil organism(s) look like?

Page 13: Paleontology, Homology, and Evolution

What did your fossil organism(s) look like?

Page 14: Paleontology, Homology, and Evolution

What did your fossil organism(s) look like?

Page 15: Paleontology, Homology, and Evolution

What did your fossil organism(s) look like?

Page 16: Paleontology, Homology, and Evolution

What could you tell about the behavior or environment?

Page 17: Paleontology, Homology, and Evolution

What could you tell about the behavior or environment?

• Fossils are found right here in LA at the La Brea tar pits.

• Take a look at the fossils from the tar pits-what can we tell about these organisms?

• How did they get trapped in the tar pit?

Page 18: Paleontology, Homology, and Evolution

Dire WolfCanus dirus

Page 19: Paleontology, Homology, and Evolution

BisonBison antiquus

Page 20: Paleontology, Homology, and Evolution

Other organisms

• Camels (Camelops hesternus)

Page 21: Paleontology, Homology, and Evolution

Other organisms

• Ground Sloth (Paralmylodon harlani)

Page 22: Paleontology, Homology, and Evolution

Other organisms

• Mammoths (Mammuthus columbi)

Page 23: Paleontology, Homology, and Evolution

Other organisms

• Smilodon (Smilodon fatalis)

Page 24: Paleontology, Homology, and Evolution

Other organisms

• California dogwood (Cornus californica)

Page 25: Paleontology, Homology, and Evolution

Other organisms

• White Sage (Salvia apiana)

Page 26: Paleontology, Homology, and Evolution

Environment

Page 27: Paleontology, Homology, and Evolution

La Brea