One hundred million years ago a drop of tree resin that engulfed a Cretaceous spider and a wasp eventually fossilized into amber was unearthed by scientists. This fossil find shows perfectly preserved legs and part of the body of an adult male spider and a wasp ensnared in its web.
This amber is adequate evidence displaying that the Cretaceous spider, or the wasp have never gone through any evolution through the 100 million years and both animals are exactly the same with their counterparts living in our day.