When the environment changes dramatically, animals from mollusks to crows can make big changes in their behavior that enable ...
New Scientist on MSN
Surprise fossil discoveries push back the evolution of complex animals
A fossil bed in China containing animals up to 554 million years old suggests that we may have to reconsider the idea that ...
Animal life began in aquatic environments more than 600 million years ago. Around 500 million years ago, during the Cambrian ...
By Will Dunham WASHINGTON, April 2 (Reuters) - A remarkable assemblage of fossils from China is revealing that animal life ...
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