18_Fossils_Dating_Timeline

18_Fossils_Dating_Timeline - Histor Historyoflife Today...

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istor of life History of life d ’ ti Today’s questions: I. “Macroevolution” II. Studying evolution’s Greatest Hits: The importance of corroborating evidence from dependent sources of ata independent sources of data
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I. “Macroevolution” Microevolution = evolutionary change within populations Macroevolution = evolutionary change between populations
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II. Studying evolution’s Greatest Hits: The importance of corroborating evidence from independent sources of data Case studies: ascular tissue in plants Vascular tissue in plants Cambrian explosion (origin of major animal lineages) Hominins The flower … many others Tetrapod limb Tetrapoda is a monophyletic group of (mostly) land dwelling vertebrates: amphibians, snakes/lizards, turtles, crocs, birds, mammals
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The basic form of the tetrapod limb: Hypothesis: the tetrapod limb evolved from the fins of lobe finned fish that lived ~370 million years ago
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Fossil limbs from lobe finned fish and early tetrapods Which have the basic tetrapod mb pattern? limb pattern?
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This note was uploaded on 05/25/2010 for the course BIO 180 taught by Professor Bradshaw during the Spring '09 term at University of Washington.

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18_Fossils_Dating_Timeline - Histor Historyoflife Today...

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