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This list contains many extinct arthropod genera from the Cambrian Period of the Paleozoic Era. Some trilobites, bradoriids and phosphatocopines may not be included due to the lack of literature on these clades and inaccessibility of many papers describing their genera. This list also provides references for any Wikipedia users who intend to ...
The Cambrian explosion was a period of rapid multicellular growth. Most animal life during the Cambrian was aquatic. Trilobites were once assumed to be the dominant life form at that time, [58] but this has proven to be incorrect. Arthropods were by far the most dominant animals in the ocean, but trilobites were only a minor part of the total ...
At this time, all living animal groups were present in the Cambrian oceans. [ 3 ] The Avalon explosion appears similar to the Cambrian explosion in the rapid increase in diversity of morphologies in a relatively small-time frame, followed by diversification within the established body plans , [ 3 ] [ 9 ] a pattern similar to that observed in ...
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For example, in the Ediacaran period and the Nemakit–Daldynian age of the Cambrian, those animals that used calcium carbonate used the form called aragonite. On the other hand, animals that first appeared in the following Tommotian age used another form, calcite .
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