Extent
The fauna of the middle Cambrian has a cosmopolitan range. All assemblages preserving soft-part anatomy have a very similar fauna, even though they span almost every continent. The wide distribution has been attributed to the advent of pelagic larvae.
Read more about this topic: Burgess Shale Type Fauna
Famous quotes containing the word extent:
“We urgently need a debate about the best ways of supporting families in modern America, without blinders that prevent us from seeing the full extent of dependence and interdependence in American life. As long as we pretend that only poor or abnormal families need outside assistance, we will shortchange poor families, overcompensate rich ones, and fail to come up with effective policies for helping families in the middle.”
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“There is hardly a man clever enough to recognize the full extent of the evil he does.”
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