Preserved in amber in the Hukawng Valley in Myanmar (Burma), it is one of the rarest fossils found to date, estimated to be between 97 and 100 million years old . It freezes the moment when a young spider attacks a wasp in its web, and also contains the body of an adult male spider supported on the same web, which indicates that at that time social behavior already existed among arachnids, and they were not just "lonely cannibals".
The plant resin that forms amber is known for its ability to flow over insects and other life forms and preserve them perfectly. The spider found in this fossil, according to its discoverers in the Historical Biology magazine, possibly had been waiting patiently for several hours to take a bite to its mouth, and just when it had a prey in its hands it was wrapped in resin.
Although scientists suspect that spiders are invertebrates that have existed for 200 million years, the oldest fossil evidence is only 130 million years old. As for the wasp, it belongs to a group that still parasitizes spiders and insect eggs today.
