From this one migrant species would come many -- at least 13 species of finch evolving from the single ancestor. This process in which one species gives rise to multiple species that exploit ...

Their appearance pushes back amniotes evolution by 35-40 million years. Between 359 and 350 million years ago, it rained.

The birds have been named for Darwin, in part, because he later theorized that the 13 distinct species were all descendants of a common ancestor. Each species eats a different type of food and has ...

Scientists believe the 17 species of finches on the Galapagos Islands can be traced back to one common ancestor: the dull-colored grassquit. According to Darwinism, the grassquit adapted to the ...

After a brief rain in part of the ancient supercontinent of Gondwana 350 million years ago, a reptile pressed its small claws ...