It's home to over 200 animals, ranging from giraffes to cheetahs. But despite this extensive collection, keepers at Bristol Zoo Project have been left baffled by one mysterious creature. The four ...

New Fossils Of Extremely Primitive 4-Legged Creatures Close The Gap Between Fish And Land Animals Date: June 27, 2008 Source: Uppsala University Summary: New exquisitely preserved fossils from ...

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 ...

This particular creature would have been up to 4 meters long, or 11 feet, tail included. The team that found it named it Peregocetus pacificus.

Snakes used to have four legs, according to a roughly 120-million-year-old fossil from northeastern Brazil. These legs likely weren't used for movement, but perhaps helped the snake mate or grasp ...