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Cascade of events' led to explosion of animal life 520 m yrs ago Washington, Sept 20: A new study has suggested that the explosion of animal life on Earth around 520 million years ago took place because of a combination of interlinked factors rather
On Earth, animal life expanded rapidly during the early Cambrian period, around 520 million years ago. Many theories have been advanced to explain this rapid expansion of animal species, which has come to be known as the Cambrian explosion.
Earl Wilson/The New York Times Carl Zimmer Humans have a skull, too. This and a number of other traits we share with Myllokunmingia reveal it to be one of the oldest, most primitive vertebrates yet found...Myllokunmingia emerged during one of the
The Cambrian explosion was the period when most modern animal groups appeared between 540 and 520 million years ago. The findings resolve 'Darwin's dilemma': the sudden appearance of a plethora of modern animal groups in the fossil record during the
Earth is 4.5 billion years old, and during that time it's been through a lot of dramatic changes as well as enormous disasters that reshaped the oceans and continents. Here are ten images that reveal the grandeur of Earth, as seen from the
Video Researcher Darla Zelenitsky from the University of Calgary holds a skull of an ornithomimid preserved with feathers recovered from the badlands of Alberta, Canada. University of Calgary video Video These rocks are similar to the Burgess Shale,
A fossilized, cigar-shaped creature that lived about 520 million years ago has been unearthed in Morocco. The newfound species, Helicocystis moroccoensis, has "characteristics that place it as the most primitive echinoderm that has fivefold symmetry,"
LiveScience Scientists have unearthed extraordinarily preserved fossils of a 520-million-year-old sea creature, one of the earliest animal fossils ever found, according to a new study. The fossilized animal, an arthropod called a fuxhianhuiid, has
At one time, the squishy invertebrates constituted most of the animal life on Earth, but about half a billion years ago, something remarkable happened: an evolutionary explosion known as the Cambrian Era. Rising oxygen levels in the ocean's shallows
Footprints, bite marks, nests, burrows and the like are all called 'trace fossils' and are an interesting and important part of palaeontology. After all, these can provide direct evidence of how an animal moved and behaved in a way in which a