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All Articles Tagged As: cambrian explosion
 | Earth's 4.5-billion-year history is filled with several turning points but one of the biggest is the Cambrian explosion of life, roughly 540 million years ago, when complex, multicellular life burst out all over the planet. Now, researchers led by Arizona State University geologist L. Paul Knauth believe they have found the trigger for the Cambrian explosion. ...> Full Article |
 | An international team of scientists has found the oldest evidence for animals in the fossil record. The researchers examined sedimentary rocks in south Oman, and found an anomalously high amount of steroids that date back to 635 million years ago, to around the end of the last ice age. The steroids are produced by sponges. The discovery of the sponges is evidence for multi-cellular animal life beginning 100 million years before the Cambrian explosion. ...> Full Article |
 | Earliest example of collective behavior uncovered ...> Full Article |
 | Geologists have solved a puzzle found in rocks half a billion years old. ...> Full Article |
 | Scientists have known for some time that most major groups of complex animals appeared in the fossils record during the Cambrian Explosion, a seemingly rapid evolutionary event that occurred 542 million years ago. Now Virginia Tech paleontologists, using rigorous analytical methods, have identified another explosive evolutionary event that occurred about 33 million years earlier among macroscopic life forms unrelated to the Cambrian animals. They dubbed this earlier event the "Avalon Explosion." ...> Full Article |
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