The arrangement of bones in our specimen's fins are the same as those of 'fingers' in tetrapods. The only difference is the digits are locked within the fin, and not free moving.
Remains of a 365m-year-old forest of extinct lycopsid trees has been found in China.
A record of sea-level change from 400 million years ago in South Africa, reveals how ecosystems and environments collapsed at the South Pole.
The discovery of two separate fossils tetrapod species proves that they lived all over the world by the end of Devonian.
Cladoxylopsid trees were hugely complex and very different to those we have now.