WASHINGTON (AP) -- Scientists unearthed a skull of the most primitive four-legged creature in Earth's history, which should help them better understand the evolution of fish to advanced animals that walk on land.
The 365 million-year-old fossil skull, shoulders and part of the pelvis of the water-dweller Ventastega curonica were found in Latvia, researchers report in a study published in Thursday's issue of the journal Nature.
http://www.cnn.com/2008/TECH/science/06/25/fishfossil.ap/index.html
