Dododex
ARK: Survival Evolved & Ascended Companion
Tips & Strategies
These little guys are just there, chilling. Unless you need chitin or silica pearls. For me, on the Steam version, I have a base on a peninsula near Weathertop. There is a shallow river by my base. Sometimes I will see these things in that river. Sometimes I will see them at Herbivore Island. If you have SCUBA gear or some kind of fast and reliable aquatic mount, you can find them in the deep ocean.
More Trilobite Utility Tips
On the left side of the island map, there is a bit that looks a bit like a crooked finger. First of all, you can wall off the part that connects it to the rest of the island and turn the entire finger into your base. It is extremely safe and the only predators there are ichthyornises and dilos. Second of all, at the part where it connects to the rest of the island, there is a small pond surrounded by rocks and in that pond a ton of trilobites spawn. I made my base on this finger and made a chitin farm with the pond. Do with this knowledge what you will.