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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“... whatever men do or know or experience can make sense only to the extent that it can be spoken about. There may be truths beyond speech, and they may be of great relevance to man in the singular, that is, to man in so far as he is not a political being, whatever else he may be. Men in the plural, that is, men in so far as they live and move and act in this world, can experience meaningfulness only because they can talk with and make sense to each other and to themselves.”
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