If you look for these guys look by ocean beaches Not lake beaches hoped this helped

These animals are ancient! And are believed( by some) to be related to the horseshoe crab. They look alike, in some ways! Trilobites were one of the first massive sea animals around ( back then, these were considered massive, due to life still getting the hang of making non- micro sized creatures.) but eventually went extinct by an apex predator that adapted to break their rough armor, and sadly that was the end.

— plastic bag

On Aberration craft a fish basket, deploy it near one and after a few seconds you can pickup the basket with the trillo inside you then have a timer to release it

They seem to spawn in the south of the standard island map, usually near the water on a sandy beach at dusk and dawn

Very good for low level oil, chitin, some raw meat, black and white pearls collecting, but there somewhat rare to find.

I struggle to find silica pearls on the island so at one point in time I hunted these guys down to the brink of extinction. (I basically just slaughter them).

Hey guys for those who are playing on the island at the bit u spawn on the trilobites spawn mostly at 12:00 hope this helps someone

In mobile you can find these in the bay in Herbivores Island

When you tame these guys far from home, keep in mind that the Megalosaurus CANNOT pick them up in its jaws when tamed. This caused me a long hike home. Keep it in the basket until you’d like to release it. More testing required to see if any mounts can carry it when tamed!

I have recently discovered that these are by far the most valuable tame for any level of player.

Why you ask? Try taming 1 and then put anything at in it's inventory and see what happens ;) also you don't have to feed them AT ALL

Beware I brought a Rex to fight it but my rex died in deep water

Kill these on sight to get resources that you’ll need later because these suddenly disappear when you need them

They are in the most around the red oblesc (sorry I spelled that wrong) tons got 500 black pearls and I'm not even trying to count all the silica pearls. Also a titano that became one with the fish

I once got 157 chitin from just one of these!! Definitely recommend going for these guys for chitin and oil, pearls (you get both) are just a bonus! They like to spawn around beachs and shallow rivers #Wolfs4Life ❤️❤️🐺❤️❤️ -Wolfa191

These guys show up on snow owls’ heat vision, so you can fly around the beaches and find them easier

Harvest these guys when you can. They most likely will disappear whenever you actually need them. They’ll drop chitin, silicone pearls, and black pearls. My next tip will be more in-depth.

If possible use a chain saw to harvest these. You get a lot more than a hatchet.

What are the coordinates where they spawn on mobile. Please say I need them.

These are tameable for Pc Users, all you need to learn is the Fish Basket engram and drop one down near a high lvl trilobite and then stand in the trilo’s way and guide it til it’s near your basket then capture it, release it before it expires in your inventory then cryopod it up for save keepings! Trick no ones sharing is you can hide blueprints in abberation trilobites and then hide them underwater ;) p.s you can also tame leeches and then leave them on aggro for biowarfare at obelisks or transmitters lol or Sabre salmon then catch release then cryo them for easier otter taming or attaching c4 to said salmon then attacking underwater targets....

My favorite Dino can now be tamed for $20...