Formation of the Great Lakes Part 2 Precambrian and Paleozoic. History Channel Video Chapter 2 in Grady Chapter 2 in Greenberg. Great Lakes Basin in the Precambrian. Foundation for Great Lakes Basin (GLB) was formed over 3 bya in Precambrian Canadian Shield Igneous rocks
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History Channel Video
Chapter 2 in Grady
Chapter 2 in Greenberg
Fossilized cyanobacterial mat
Colonial chroococcalean cyanobacterium from the Bitter Springs chert of central Australia, a site dating to the Late Proterozoic, about 850 million years old.
Palaeolyngbya also from the Bitter Springs chert.
Doing the backstroke among the stromatolites in a tropical Precambrian sea
Fossil Precambrian sea Oscillatoria
Living Precambrian sea Oscillatoria
Cambrian Precambrian sea
sis Precambrian sea
Banded Iron Formations Precambrian sea
Ediacaran Fauna of Australia and Newfoundland, CA
Soft Bodied Invertebrates
Avalon Peninsula Newfoundland, CA Precambrian sea
Cyclomedusa Precambrian sea a jellyfish
Charnia masoni Precambrian sea - no known living descendants
Dickinsonia costata – Precambrian sea early relative of earthworms?
Trace fossils Precambrian sea of primitive worms
Precambrian Ocean – Ediacaran Fauna 620 to ~543 mya Precambrian sea
Charnia Precambrian sea
Shallow seas covered GLB
The Cambrian Explosion
570-505 million years ago