A 580-million-year-old fossil suggests that evolution of bilateral symmetry may be simpler than previously thought, Nature reports. The fossil, an eight-armed swirl named Eoandromeda after the galaxy ...

The Magic Kingdom has the regal Cinderella Castle. With Epcot, it's the gleaming and futuristic Spaceship Earth. These are Disney's theme park icons, which appear in photographs and advertising so ...

Surprisingly, genome comparisons have failed to resolve a major question in animal evolution: Which living animals are the descendants of the earliest animals to evolve in the world's oceans?

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A chunky, 1.5-metre-long armoured predator that lived some 250 million years ago may upend our understanding of reptile evolution. Fossils of the novel species – named Prosaurosphargis yingzishanensis ...

A new study bolsters the idea that the first animals were surprisingly complex, perhaps equipped with muscles and a nervous system. By Carl Zimmer One of the greatest transformations in the history of ...

Deep, deep in geologic time, some 600 million or 700 million years ago, the very first animals evolved on Earth. Their closest relatives that still live today include sponges, sea anemones and comb ...

700 million years ago, a remarkable creature emerged for the first time. Though it may not have been much to look at by today’s standards, the animal had a front and a back, a top and a bottom. This ...