00:03Finding fossils can tell us a whole lot about the creatures that lived on our planet millions of
00:07years ago but observing the bones and skin can only tell us so much that's why this 520 million
00:13year old fossil is so amazing as it still has the brain and all of the other insides intact the
00:19prehistoric creature was discovered in china and it's only around the size of a sesame seed however
00:24the discovery is gargantuan as it is a new genus and species of your arthropod called
00:29y uanxi it was found complete with all of its internal systems still in there and since it's
00:34related to all modern spiders crabs and insects this single find should help researchers fill in
00:39many evolutionary gaps in our current biological understanding the researchers used 3d imaging to
00:44get a better look inside finding the creature was at a particular point in its developmental
00:48period of evolution one rarely seen by scientists paleontologist martin smith says this find is
00:55literally a dream come true saying recently i already knew that this simple worm-like fossil
01:00was something special but when i saw the amazing structures preserved under its skin my jaw just
01:05dropped how could these intricate features have avoided decay and still be here to see half a billion years
01:10years later
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