But humans, chimps, mice, and rats are all living organisms, while Neanderthals have been extinct for thirty thousand years.
These volcanoes have been extinct for two millennia, so you can walk there without any worries.
The lungfish-like creature was believed to have been extinct for 6 million years until researchers pulled one out of the waters off South Africa in 1938.
And four years later, on another voyage, four snail-like creatures that until then were believed to have been extinct for 300 million years were brought up alive from a depth of 18,000 feet, 200 miles west of Peru.
Now I get the chance to show some behind-the-scenes photographs and interview the mastermind behind the build, Jez Gibson-Harris, and he reveals just how you build the body of a multi-ton giant that's been extinct for 65 million years.
Until then, only fossils had been found in this order which was thought to have been extinct for 60 million years.
By comparison, dinosaurs have been extinct for about 65 million years, and the ancestors of humans got going only about 4 million years ago.
Using such techniques, researchers have now resurrected the DNA of the Tasmanian tiger, the world's largest carnivorous marsupial, which has been extinct for more than seventy years.
Much of my research looks at reconstructing the behaviour of non-avian dinosaurs: animals that have been extinct for some 66 million years and are represented only by fossils.
In his current article, Specter describes this process taken to the next step: Researchers have now resurrected the DNA of the Tasmanian tiger, the world's largest carnivorous marsupial, which has been extinct for more than seventy years.
In the human lineage most LTR elements have been extinct for over 40 million years.
