This tiny fossil, measuring just a few centimeters, is significant as it is the oldest confirmed ecdysozoan and the only one known from the Precambrian era. Lead researcher Ian Hughes, a Ph.D. can ...

to the geologically sudden diversification of multicellular life known as the Cambrian Explosion (usually dated at about 542 million years ago). The Precambrian is usually considered to have three ...

It wasn't truly an explosion, he told Live Science, but rather a gradual increase ... but scientists have a few ideas. During the Precambrian, the supercontinent Rodinia broke apart into pieces ...

For decades now, the prevailing scientific theory explaining the Precambrian Avalon explosion — in short, the era dating back to ... need to rewrite students' science textbooks.

In the history of evolution, there have been few events more remarkable than the Cambrian explosion. After bacteria ruled the planet for some three billion years, a great variety of multicellular ...

The finding is significant, because similar fossil grooves and furrows found from the Precambrian era, as early as 1.8 ... known as the Cambrian explosion, puzzled Charles Darwin and remains ...

Aristos is a Newsweek science and health reporter with the ... "This means that a long fossil record back to the Pre-cambrian (650 million to 600 million years ago) is not necessary, nor was ...

That’s because, for decades, science textbooks have ... has been based on the idea that the Precambrian Avalon explosion – which is essentially the era when life began to evolve and become ...

A pink sponge, photographed at an aquarium today, is not unlike one of the first life forms that appeared in the Precambrian era. Photograph by Joel Sartore, National Geographic Photo Ark The ...

The history of the first animal life remains somewhat confused. Ediacaran fossils are clearly multicellular, but lack many of the features shared by all modern animals. In the ensuing period, the ...

“Fossil rabbits in the Precambrian.” Since the so-called “Cambrian explosion” of 500 million years ago marks the earliest appearance in the fossil record of complex animals, finding mammal ...

They appeared in the late Precambrian Era, a period of major geologic and ecological changes that preceded the Cambrian explosion of animal life. At some point in their evolution, jellyfish gained ...