The evolutionary tree derived from Giles and colleagues' analyses places polypterids firmly within the Scanilepiformes. Furthermore, this analysis locates nearly all of the considerable array of ...

While Darwin (1859) showed that all life on Earth is related in a single evolutionary tree, he did little to map out its branches. The anatomist Ernst Haeckel (1834-1919) was one of the first people ...

While Darwin (1859) showed that all life on Earth is related in a single evolutionary tree, he did little to map out its branches. The anatomist Ernst Haeckel (1834-1919) ...

The researchers also tried to link their evolutionary tree to known geological eras. On its own, the network of relationships shown by the DNA doesn’t contain any dates.

Since first appearing during the age of dinosaurs, snakes have authored an evolutionary success story - slithering into almost every habitat on Earth, from oceans to tree tops. New research ...