Last updated on March 16, 2014 at 9:20 EDT

Latest Evolutionary history of life Stories

2010-03-25 10:28:25


2009-09-10 05:25:00

Analysis of a rock type found only in the world's oldest oceans has shed new light on how large animals first got a foothold on the Earth. A scientific team led by Professor Robert Frei at the University of Copenhagen in Denmark, and including scientists from Newcastle University, UK, and universities in Uruguay and Southern Denmark, have for the first time managed to plot the rise and fall of oxygen levels in the Earth's atmosphere over the last 3.8 billion years. By analyzing the isotopes...

2009-07-07 06:45:00


2008-03-26 15:25:00

UC Riverside-led study tracked biogeochemical signatures preserved in ancient sedimentary rocks to establish nature and timing of oxygenation of Earth's atmosphereA deficiency of oxygen and the heavy metal molybdenum in the ancient deep ocean may have delayed the evolution of animal life on Earth by nearly two billion years, a study led by UC Riverside biogeochemists has found. The researchers arrived at their result by tracking molybdenum in black shales, which are a kind of sedimentary rock...

2008-01-08 15:55:00


2006-12-08 13:00:00

The sudden appearance of large animal fossils more than 500 million years ago "“ a problem that perplexed even Charles Darwin and is commonly known as "Darwin's Dilemma" "“ may be due to a huge increase of oxygen in the world's oceans, says Queen's paleontologist Guy Narbonne, an expert in the early evolution of animals and their ecosystems. In 2002, Dr. Narbonne and his research team found the world's oldest complex life forms between layers of sandstone on the southeastern...

Latest Evolutionary history of life Reference Libraries

2014-01-12 00:00:00


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