Portal:Arthropods/Selected picture/24

Triops longicaudatus (Crustacea: Branchiopoda: Triopsidae)
Triops longicaudatus (Crustacea: Branchiopoda: Triopsidae)
Triops longicaudatus is a freshwater crustacean of the order Notostraca. It is considered a living fossil because its from has changed little from its ancestors 70 million years ago.