For some animals, age even had a positive effect on reproductive traits. In many insect species, for example, ejaculate size, ...

Two species of ancient human relatives crossed paths 1.5 million years ago. Fossilized footprints in Kenya captured the ...

This discovery was made in the Nilpena Ediacara National Park, a site renowned for its Ediacaran period fossils. Researchers found valuable traces of evolution here. Quaestio simpsonorum stands out ...

Hikers were responsible for the discovery of what scientists believe to be a prehistoric ecosystem. The first sign of the ...

Giant creatures evolve beneath the ocean's surface. Their discovery changes our perception of underwater life. At depths of over 8,200 feet (2,500 meters), scientists have uncovered a universe teeming ...

whole communities of multicellular animals are living their best lives down in the darkness. The discovery suggests a much more complex hydrothermal ecosystem than we knew about, at ocean depths ...

Their discovery of Uncus dzaugisi ... Cambrian fossils record and adds to our understanding of the evolution of animal life,” said Mary Droser, a distinguished professor of geology at UCR ...

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 ...

Research on the prehistoric organism Chromosphaera perkinsii, published in "Nature", suggests that eggs appeared on Earth ...

The team used these newly generated stem cells to help form a living, breathing mouse from a developing embryo.