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Cambrian Explosion in Arthropods
Source info:
| Author: | Will Baird |
|---|---|
| Date: | 2013-09-12 21:00:00 |
| Blog: | The Dragon’s Tales  |
| URL: | http://thedragonstales.blogspot.com/2013/09/cambrian-explosion-in-arthropods.html |
Summary:
The incredible burst of innovation in animals' body plans and habits during the Cambrian explosion, between 540 and 520 million years ago, can be explained by a reasonable uptick in evolutionary rates. The discovery, based on the first rigorous estimates of early evolutionary rates in arthropods, shows that evolution's "big bang" is compatible with natural selection as Darwin envisioned it,Content analysis:
Stratigraphic context:
| Recognized stratigraphic terms [n]: | Cambrian [2] |
|---|---|
| Agenames chronostratigraphy [rating]: | Cambrian [0.33] Paleozoic [0.33] Phanerozoic [0.33] |
Keywords:
animals, arthropods, big bang, body plans, cambrian explosion, Darwin, early evolutionary rates, evolutionary rates, habits, incredible burst, innovation, natural selection, reasonable uptick, rigorous estimates
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