Tempo and mode of early animal evolution: inferences from rocks, Hox, and molecular clocks From: Paleobiology | Date: January 1, 2005| Author: Evans, David A D; McPeek, Mark A; Peterson, Kevin J | Copyright Paleontological Society 2005. Provided by ProQuest LLC.Copyright information

Abstract.-One of the enduring puzzles to Stephen Jay Gould about life on Earth was the cause or causes of the fantastic diversity of animals that exploded in the fossil record starting around 530 Ma-the Cambrian explosion. In this contribution, we first review recent phylogenetic and molecular clock studies that estimate dates for high-level metazoan diversifications, in particular the origin of the major lineages of the bilaterally-symmetrical animals (Bilateria) including cnidarians. We nex...

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	Tempo and mode of early animal evolution: inferences from rocks, Hox, and molecular clocks Paleobiology ; Abstract.-One of the enduring puzzles to Stephen Jay Gould about life on Earth was the cause or causes of the fantastic diversity of animals that exploded in the fossil record starting around 530 Ma-the Cambrian explosion. In this contribution, we first review recent phylogenetic and molecular
	SIMULATIONS OF EVOLUTIONARY RADIATIONS AND THEIR APPLICATION TO UNDERSTANDING THE PROBABILITY OF A CAMBRIAN EXPLOSION Journal of Paleontology ; ABSTRACT-A molecular survey of animal phylogeny (Wray et al., 1996) recovered the presumed correct temporal order of the phylogenetic splits Protostomata-Deuterostomata, Echinodermata-Chordata, and Agnatha-Gnathostomata in studies of six of seven gene sequences. This result raised the question of
	When animals hit the big time.(new discoveries about the Cambrian explosion) U.S. News & World Report ; Sitting in his sprawling office under the eaves of the Earth sciences building at the University of Cambridge, Nicholas Butterfield seems a typical denizen of the ivory tower. A specialist in ancient ecology, Butterfield spends most of his time pondering the finer points of life in seas that
	The Colorful Cambrian.(research indicates evolution of eyes may have sparked explosion of evolution in Cambrian period)(Brief Article) Discover ; The cambrian explosion--evolution's Big Bang--began some 543 million years ago. Within a mere 5 million years the ancestors of almost all animals now living--from mollusks to humans--suddenly appeared on Earth. There has been no lack of theories to explain the phenomenon. An increase in oxygen
	In the Blink of an Eye: How Vision Sparked the Big Bang of Evolution.(Book Review) Journal of College Science Teaching ; In the Blink of an Eye: How Vision Sparked the Big Bang of Evolution Andrew Parker. 2003. 316 pp. $15. Perseus Publishing, New York. ISBN: 0465054382. [ILLUSTRATION OMITTED] This is an excellent window into one of the great mysteries of evolution, the Cambrian explosion. In one of the most
	What we talk about when we talk about Darwin.(ARTS: EXCERPT)(evolution) Science & Spirit ; ... looks quite sensible. After all, evolution is constantly in the news and students--and their parents--are certainly going to be interested ... to relativity is not constantly--or even occasionally--in the news. No law has ever ruled that it could not be taught in school ...
	A revolutionary attempt to bolster the teaching of evolution: an interview with Julie Benyo. (Q&A).(Interview) Curriculum Review ; Why is the teaching of evolution such an important issue for schools? In what ways is it relevant to our everyday lives? Evolution really is central to understanding all of biology. Without understanding the theory of evolution, biology is a lot of facts about different things. You don't understand
	Evolution 101.(Book review) The American Biology Teacher ; Evolution 101. By Randy Moore and Janice Moore. 2006. Greenwood Press (ISBN 0313332924). 240 pp. Hardcover. $49.95. The challenge of defining and attaining scientific literacy for the non-scientist has grown increasingly difficult with the exponential growth of our biological knowledge. At the same
	Evolution.(Book review) The American Biology Teacher ; Evolution. 2007. CD-ROM and Workbook. Developed by BioZone International Ltd, 109 Cambridge Rd, Hamilton 3216, New Zealand. Visit www.biozone.co.nz for more information and contact sales@biozone.co.nz for ordering. $99.95. In addition, it can be purchased as a bundle along with the Evolution and
	Evolution: Getting to the Gut of the Matter The Washington Post ; The most spectacular burst of evolutionary diversification in Earth's history -- the so-called Cambrian explosion that happened 544 million years ago and created most of today's animal body plans -- may have been the result of a less celebrated event: the origin of feces. In the July 6 Nature, John

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