The discovery of two ancient fossils shows early mollusks were more complex and diverse than previously thought. Researchers ...

But we know for certain that this back-to-the-water evolution ... these animals is necessarily a direct ancestor of the whales we know today; they may be side branches of the family tree.

We often see the results of evolution, but not the process directly. Now, scientists have been treated to front row seats of ...

An international team of scientists has uncovered a fascinating piece of the evolutionary puzzle: how the ventral nerve cord, a key component of the central nervous system, evolved in ecdysozoan ...

Evolutionary trees show how different species have evolved ... So the question is, why? How could an animal be so precisely adapted to a particular lifestyle? The answer is natural selection.

Researchers have unearthed two fossils, named Punk and Emo, revealing that ancient molluscs were more complex and adaptable than previously known.