112-pp27 - UNIVERSITY OF SOUTH ALABAMA Last time we...

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1 GY 112: Earth History UNIVERSITY OF SOUTH ALABAMA Paleozoic Life forms 1: Plants Last time we covered… The Paleozoic Part 3 1) Alabama in the Paleozoic Appalachian Provinces We only see 3 of the 4 tectonic provinces of the Appalachians in Alabama (+ the coastal plain) 1) Plateaus (undeformed) 2) Valley and ridge (folded/faulted) 3) Piedmont (Highly metamorphosed) Alabama Stratigraphy (Paleozoic) Alabama (Early Paleozoic) B Subduction zone S u b d ctio n zo e I s l a r c Cambro-Ordovician Alabama (Mississippian) B
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2 Alabama (Pennsylvanian ) Today’s Agenda Paleozoic Fossils (web notes 27) A) The first “plants” (Archean-Proterozoic) B) Diversification (Paleozoic-Mesozoic) C) Domination (Mesozoic-Cenozoic) Paleozoic Life forms: Plants Kingdom: Animalia What about Kingdom: Plantae? Paleozoic Life forms: Plants Terrestrial plant evolution apparently did not occur until the mid- Silurian… Paleozoic Life forms: Plants Oceans are full of beasties Marine invertebrates Terrestrial plant evolution apparently did not occur until the mid- Silurian… Paleozoic Life forms: Plants Land is devoid of all beasties zilch Oceans are full of beasties Terrestrial plant evolution apparently did not occur until the mid- Silurian…
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3 Paleozoic Life forms: Plants But that doesn’t mean that there weren’t any “plants” Paleozoic Life forms: Plants There are lots of marine plants (including calcareous green algae) ht p:/ www.botany.hawai .edu/BOT201/Algae/Bot%20201%20Chlorophytes%20page.gif Paleozoic Life forms: Plants There are lots of marine plants (including calcareous green algae) First appeared in rock record at 600 MA; abundant at 500-400 MA ht p:/ www.botany.hawai .edu/BOT201/Algae/Bot%20201%20Chlorophytes%20page.gif Paleozoic Life forms: Plants And you can actually go back further still… Paleozoic Life forms: Plants And you can actually go back further still… Plants can be traced back to prokaryotes including cyanobacteria (AKA Stromatolites) ht p:/ www.theguardians.com/Microbiology/lyngb3_bg.jpg Paleozoic Life forms: Plants A bit more info on prokaryotic evolution is needed
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4 Paleozoic Life forms: Plants A bit more info on prokaryotic evolution is needed • The first prokaryotes were heterotrophs (they simply digested carbon from other organisms; “consumers in the food chain”). By the way, all animals are heterotrophs.
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This note was uploaded on 02/04/2012 for the course GLY 112 taught by Professor Haywick during the Spring '12 term at S. Alabama.

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112-pp27 - UNIVERSITY OF SOUTH ALABAMA Last time we...

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