Earth’s earliest animals may have held evolution back because they reproduced asexually, creating low-competition communities ...

Fossils from some of the oldest-known animals on Earth, dating from 574 million years ago (Ediacaran period), suggest that cloning, not competition, dominated the Ediacaran seas, slowing evolution ...

Scientists suggest Earth's earliest animals reproduced asexually, slowing evolution and delaying the biodiversity boom that ...

Experts think they may have uncovered what the first ever animal on Earth looked like after ancient chemical signals were found. For as long as scientists have understood evolution, the debate over ...