Animals of the Cambrian period went through one of the greatest evolutionary surges in history, known as the Cambrian Explosion. Animals of the Cambrian period likely began as worms or worm-like ...

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The Cambrian Explosion is a landmark moment in the history of life on Earth when many of the major groups of animals first appear in the fossil record. New research, however, suggests that many of ...

Earth’s earliest animals may have held evolution back because they reproduced asexually, creating low-competition communities ...

Animal life is extraordinarily diverse and complex, having colonised almost all environments on Earth – from hostile hydrothermal vents in the deep sea to the skies across our continents. But all this ...

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Early animals formed complex ecological communities more than 550 million years ago, setting the evolutionary stage for the Cambrian explosion, according to a new study. Early animals formed complex ...

The way that Earth's first animals reproduced held back life's diversity for millions of years, until stress and competition ...

Scientists on Wednesday announced they can now give the world a new picture of Hallucigenia sparsa, a sea oddball that was so strange, it looks like something out of a hallucination or nightmare.

Tracks left by some of the earliest complex animals are giving new insights into how they experienced the world. New research reveals how these creatures started to understand their surroundings, ...

Long considered possible evidence of some of the earliest animal activity ever recorded, these tiny fossils discovered in ...

A bizarre, tentacled creature that lived in the deep ocean 560 million years ago resembled a goblet crammed full of wriggling fingers. It may be an ancient relative of modern jellyfish and the ...