Topic%2005_Cambrian

Topic%2005_Cambrian - CAMBRIAN What critter is this and why...

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What critter is this and why is it important ? CAMBRIAN These are blown-up images of what ? The Cambrian is the Roman name for (Scotland, Wales ). Cambrian-age rocks have been found on every continent; they occur throughout North America, where the ( Burgess, Burgandy ) Shale, in British Columbia, Canada, is an especially significant deposit of Middle Cambrian rocks that preserve soft-bodied organisms. Lower ( Cambrian, Ordovician ) rocks in Yunnan, China, preserve the famous soft-bodied Chengjiang biota. In Antarctica, Upper Cambrian rocks in the Ellsworth Mountains preserve a highly varied (shelly, soft-bodied) fauna
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Identify this group of complex organisms—the first found in the geologic record. Cambrian rocks were deposited between roughly 500 and 50 million years ago, the first period of the ( paleozoic, Mesozoic, Cenozoic ) Era. During Cambrian time, animals having ( exoskeletons, bones ) become widespread in the fossil record. Before the Cambrian, in the late Neoproterozoic Era, Earth had multicellular life; however, the organisms were (hard, soft ). The advent of the (Proterozoic, Paleozoic, Mesozoic ) Era
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This note was uploaded on 08/23/2009 for the course GEOL 102 taught by Professor Kennethsprenke during the Fall '09 term at Idaho.

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Topic%2005_Cambrian - CAMBRIAN What critter is this and why...

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