Fossil: Daddy Longlegs Once Had Second Set of Eyes | AMNH https://www.amnh.org/explore/news-blogs/research-posts/fossil-daddy-longlegs-once-had-second-set-of-eyes
Living harvestmen—a group of arachnids commonly known as daddy longlegs—have a single pair of eyes. But a newly described 305-million-year-old fossil found in eastern France shows that wasn’t always the case.
This harvestman’s right eye is the black spot near