Monthly Archives: September 2017

The Amniotic Egg: Amphibians to Reptiles (October 2-6)

The sixth week already. It must be time to really “conquer the land” as we say too often. Please review the links for last week so you’re up to speed on the amphibians. Their descendants the reptiles are an enormously … Continue reading

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From Fins to Feet: Early Vertebrate Evolution (September 25-29)

This week we return to the Paleozoic and examine developing marine communities, followed by a discussion of the causes of the Permian Mass Extinctions — the greatest disaster in the History of Life. Paleogeographic maps of Pangaea at the end … Continue reading

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Developing Marine Ecosystems (September 18-22)

Our topic this week  is the rise of animal life and the early development of marine communities. A good place to start on the Web is at Queen’s University’s Ediacaran fauna page. (Canadians are big on the earliest rocks and … Continue reading

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The First Record: The Oldest Fossils (September 11-15)

Hard to believe we’re already in the fourth week. We will begin with continued discussions of origins, especially hypotheses about the origin of life. Please be sure to look at the links listed for last week on this topic. We … Continue reading

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