When were spiders first discovered?
380 million years ago; The first definite spiders, thin-waisted arachnids with abdominal segmentation and silk producing spinnerets, are known from fossils like Attercopus fimbriungus. This spider lived 380 million years ago during the Devonian Period
Join Alexa Answers
Help make Alexa smarter and share your knowledge with the worldLEARN MORE