One of the most important characteristics that scientists who study insects, arachnids & other spider relatives look at to determine new species is the genitalia (so, penises). Dr. Jason Dunlop, who researches fossil spiders in amber, shared this big discovery with us on our visit to Berlin.
National Geographic, 'Fossil Daddy Longlegs Sports a 99-Million-Year Erection'
Scientific paper, "Penis Morphology in a Burmese amber harvestman"
Learn more about the Museum für Naturkunde
Special thanks to Juliane Röhner and Manja Voß for their generous help and guidance through this process.