In the last hundred or so years some of finds labeled as “prehistoric” have been released. Animals and plants that were determined by scientists to be extinct really aren’t. They found a kind of rat/squirell thingy last year. In 1994 (I think) they found the walimi (sp?) pine tree alive and well in Australia. Before that it was the lobe-fined fish found in the India Ocean. They had fossils for all of these supposedly millions of years old but in reality they are alive and surprisingly unevolved even after millions of years (duh).
Here is another one. A very funky shark that seems very much “present historic”.