Posted on October 2, 2008 by erlaurie
Many Dinosaur species are named from incomplete specimens, which is a result of the rarity of dinosaur fossils in general. Sometimes it’s hard to know whether you have a new species or a slight variation of something which is already known:
http://news.bbc.co.uk/1/hi/sci/tech/7620621.stm
Filed under: Palaeontology | Leave a Comment »
Posted on September 28, 2008 by erlaurie
The Allende Meteorite tells us that the Earth is about 4.567 billion years old, but the oldest rocks at the surface of the Earth are a bit younger than that. Now a team has found rocks at the surface which as 4.28 billion years old:
http://news.bbc.co.uk/1/hi/sci/tech/7639024.stm
Filed under: Stratigraphy | Leave a Comment »
Posted on September 7, 2008 by erlaurie
The palaeontology of the earliest signs of life is a blend of chemistry and mineralogy. Uncertainty is part of life for people dealing with the most ancient evidence. Geologists are communally convinced that they have solid signs of life which are ~4.2 billion years old, but some samples seem to suggest an even earlier date.
http://news.bbc.co.uk/1/hi/sci/tech/7483451.stm
Filed under: Palaeontology, Stratigraphy | Leave a Comment »
Posted on August 21, 2008 by erlaurie
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