First discovered in the Mazon Creek fossil beds of Illinois in 1955, the Tully monster (or Tullimonstrum gregarium) has long challenged biologists and paleontologists alike. It lived about 300 million ...

What is the Tully monster? Learn more about the near-nameless fossil, and why experts still can't agree on its classification.

A delicate, innocuous little fossil reptile known as Mirasaura grauvogeli – “Grauvogel’s wonder reptile” – is forcing a ...

Researchers have described proteins that they say are among the most ancient ever sequenced. Two teams, which analysed molecules from extinct relatives of rhinos and other large mammals, have pushed ...

Scientists found a 247-million-year-old reptile, Mirasaura grauvogeli, with a feather-like crest that lived in trees.

Body coverings such as hair and feathers have played a central role in evolution. They enabled warm-bloodedness by insulating ...

If we climb the evolutionary tree of life, we can follow a twisting path that visits the increasingly specialised branches that a species belongs to.

Evolutionary algorithms have emerged as a robust alternative to traditional greedy approaches for decision tree induction. By mimicking the natural selection process, these algorithms iterate over ...

Scientists reconstructed 500 million years of evolutionary history to reveal which came first: colorful signals or the color vision needed to see them.

A strange sea creature discovered in Japan, resembling a skeletal panda, turns out to be a new species of Clavelina tunicate.

Rhinos’ evolutionary relationships became a little clearer with the sequencing of the oldest proteins yet. Researchers have described proteins that they say are among the most ancient ever ...