The sudden appearance of complex animals has led scientists to argue that animals must have a “hidden history”, a period in ...

After using a technique called molecular clock analysis, researchers have proposed that the origin of animals could be 200 ...

A microorganism whose evolutionary roots can be traced to the era of the first multicellular animals may provide a glimpse of how single-celled organisms made a critical evolutionary leap. In ...

Learn how new research challenges long-held assumptions about animal evolution and suggests that the earliest animals may ...

The research, published in the journal Science Advances, suggests animals may have originated deep in the Neoproterozoic Era.

Once upon a time, there were a bunch of one-celled microbes, swimming, eating, reproducing, doing all the things that a one-cell bit of life can do. Then, some time later, there were their descendants ...

Paleorex is back on Bored Panda with his detailed, science-based creatures, showing us how animals like big cats, birds, and reptiles might evolve in the future. In this article, we’re featuring even ...

The Cambrian explosion may have been fueled by poop. The first animals on Earth emerged about 600 million years ago, and 60 million years later, those simple early animals evolved in wildly different ...

Evolution is an amazing thing. While it does sometimes take years for changes to take effect or for species to evolve, ...

Embryonic germ layers are the fundamental organizing principle in animal development. They provide the structural basis from which tissues and organs arise. During early embryogenesis, cells divide to ...

To understand the origins of multicelled life, researchers are studying a motley assortment of simpler animal relatives. The commonalities they’re unearthing offer a trove of clues about our mutual ...

The earliest animals may have evolved hundreds of millions of years before their first unmistakable fossils appear in the ...