Cambrian Explosion


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Related to Cambrian Explosion: Burgess Shale
A 1 million–12 million-year burst of evolutionary activity that occurred ±525 million years ago, during which the diverse life forms that now exist on the planet evolved. Before that time, most organisms were simple, composed of individual cells occasionally organized into colonies
References in periodicals archive ?
Ward and Kirschvink frequently allude to the power of oxygen, both at and after the Cambrian explosion.
He said: "The Cambrian Explosion is one of the most important events in the history of life on our planet.
Seasteads, he says, "would create a Cambrian explosion in ways to live together.
Paleontologist Jean-Bernard Caron explores the origins of present-day biodiversity in the Burgess Shale, the Canadian Rocky Mountains fossil record of the Cambrian explosion of life more than 500 million years ago.
While I am aware that there have been innumerable pit disasters in Wales over the past century or so, I was surprised that no mention was made of the Cambrian explosion in 1965 that killed 31 miners and no mention either of the 1960 Six Bells explosion.
This Cambrian explosion of realisation spewed within my young mind and I decided to start by expanding a short story that I had penned in an English lesson into a funny, intelligent, intriguing, original novel replete with fascinating settings and characters.
As he builds the case for hybridization in The Mystery of Metamorphosis, Ryan leads readers through the earliest ideas put forth by Darwin and his contemporaries to the modern questions raised by the Cambrian explosion.
Proponents of intelligent design claim the Cambrian explosion of 545 million years ago, when the body plans of the ancestors of most animals developed, occurred too rapidly be explained by the gradual process of Darwinian evolution.
Another reason why the simple view of oxygen as the driver of the Cambrian explosion is questioned is that this explanation has holes in it.
The film explores the Cambrian Explosion, a period in Earth's history some 530 million years ago when, some scientists say, fossils indicate that complex life evolved more rapidly than Charles Darwin theorized.
A biological theory, called the Cambrian Explosion, states that many new animals quickly appeared (while others underwent genetic diversification) about 530 million years ago.
Fossilized embryos predating the Cambrian Explosion by 10,000,000 years provide evidence that early animals already had begun to adopt some of the structures and processes seen in today's embryos, say researchers from Amherst (Mass.