👉 The term "eutrichosomatinae" refers to a group of extinct arthropod animals that were part of the class Arachnida, which includes spiders and scorpions. These ancient creatures are known for their specialized adaptations such as segmented bodies with eight segments in the body, paired appendages, and sharp teeth. Eutrichosomatinae was one of the first groups to appear during the Paleozoic era, around 265-308 million
