You can find them by south province one. And just go to the other side of the island where you spawn at. You don’t need to go way over to herbivore island
Trilobite

Player-written tips for taming, using, and fighting the Trilobite in ARK: Survival Ascended & Evolved.
Never eats once tamed, doesn't level, has 150 carry weight. GACHA crystal storage 101
When I dint need gasoline I found a bunch but now I need chitin for ptera saddle and I only ever found one :/
My main source of chitin as a begginner
These funky fellas are great for resources like oil, but keep in mind they give you what you need on there terms when in need of oil you may not get it! Pikes are fun at killing them
I found 3 of these over by the the dead islands to the west of the island
If you trap one of these guys in a fishing trap, they can be placed down anywhere to make a fairly discrete storage container. Nothing will attack it, and it is extremely difficult to find.
Use a fish basket to tame
hit tge eat button and be in water
These guys spawn all over the island's footpaw area. I woke up an- OH GOD THEY'RE ALL AROUND ME!!!!!!
These are mostly found in the edges of land around water. Also, in the spawn map, you can see that they are common in water but less common than the coasts.
I need pearls and these are nowhere to be found 💀
I found one my first day playing ark on the island map. Never saw one again.
A good place to find them is on the out skirts of the island furthest southwest.
If you turn your resolution and graphics quality down it will be easier to find and spot them if they are very common it's just hard to spot them because they are so small
This isn’t really a tip but are they in the mobile version or what? I can’t find any
Easiest water tame by far if u r low level and want any random water tame do trilo
I live on herb island and I hunt these by the shore before the trench beware megalodon like to live here and I think I also think I saw a basilosaurus too
You can found it in near lava island
Good for lot’s of chitin!
And leveling up
Where there is Trilobites, there's Mantas.