6.Gingko Biloba

The Ginkgo tree is the only living representative of the order Ginkgoales, a group of gymnosperms dating back to 270 million years ago in the Permian period. Due to geological cataclysms, only three or four species were left in the Tertiary period (65 million years ago). The extinction of the dinosaurs as potential seed dispersers of the tree's large seeds may also have influenced this decline, which is in line with the fossil records.

7.Nautilus

Often called "living fossils," the nautilus originated in the Late Triassic period, and is a marine mollusk. The name means "sailor" in Greek. The nautilus is only found in the Indo-Pacific Ocean. They live in the deep slopes of coral reefs.

8.Horseshoe Shrimp

This little guy has the distinction of being the oldest living species on earth that has existed UNCHANGED for 200 million years. In other words, he may not have been around as long as some of the creatures above him, but today he's is still virtually indistinguishable from his 200 million year old fossil.

9.Sturgeon

Sturgeon and related paddlefish have undergone remarkably little morphological change, indicating that their evolution has been slow and earning them informal status of "living fossils." This is explained, in part, by their long inter-generation time, tolerance for wide ranges of water temperature and salinity, lack of predators due to size, and the abundance of prey items in their benthic environment.

10.Martialis Heureka

The most primitive species of living ants, the DNA of the Martialis heureka (which roughly translates to "From Mars! Wow!") has barely changed in the last 100 million years. This species was discovered in the Amazon in 2000, and generally lives its life underground.