@Lecture14_9

@Lecture14_9 - 1 1 Fall 2009, GEL 107: Lecture 14...

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Unformatted text preview: 1 1 Fall 2009, GEL 107: Lecture 14 PALEOBIOLOGY 2 What are seed plants and when did they appear? How and when did atmospheric oxygen come to exist? What are the major groups of plants? When did plants emerge, and in what form? What are vascular plants and when did they appear? Questions 3 Stromatolite 4 5 Cyanobacteria Photosynthesis Oxygen 6 Warrawoona Group Western Australia 3.5 billion years ago 7 Stromatolite Why is this time lag? Atmospheric oxygen Atmospheric oxygen level compared to today How many billion years before present 8 Stromatolite Atmospheric Oxygen 9 BIF (Banded Iron Formation) 2 10 11 Proterozoic Archaen 12 What are seed plants and when did they appear? How and when did atmospheric oxygen come to exist? What are the major groups of plants? When did plants emerge, and in what form? What are vascular plants and when did they appear? Questions 13 Liverworts Hornworts Mosses Club mosses Horsetails Ferns Cycads Conifers Ginkgos Angiosperms Gnetophyta Rhynia etc.etc....
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@Lecture14_9 - 1 1 Fall 2009, GEL 107: Lecture 14...

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