A fascinating fossil discovery in remote South Australia sheds light on an important chapter in the history of life on Earth: the origins of Ecdysozoa, a vast superphylum that includes molting animals ...

Over 500 million years ago, the ancestors of a diverse group of animals known as Ecdysozoans existed. This group includes various species of insects, arachnids, and nematode worms. For a long time, ...

Precambrian time covers the vast bulk of the Earth's history, starting with the planet's creation about 4.5 billion years ago and ending with the emergence of complex, multicelled life-forms almost ...

The history of a major animal group, composed of millions of species of insects, arachnids, and nemotodes, has been elusive -- until now. A team has now identified the oldest known ecdysozoan in the ...

Geologists have for the first time found evidence 1 of a meteorite impact more than 1600 million years old that possibly produced a very large crater at Chaibasa in Jharkhand state of eastern India.

KNOXVILLE -- How do we begin to understand what early life was like on Earth about 700 million years ago as our planet shifted from an oxygen-free and probably ice-covered realm to the oxygen-rich ...

Everyone has a past. That includes the millions of species of insects, arachnids, and nematode worms that make up a major animal group called the Ecdysozoa. Until recently, details about this group’s ...