I will look into the spinos spawns, it's a issue kind since beginning. Will try to solve it with 2.9.

Here too.
We start the Map last Week on a new Server. Only 3 Spinos on Map (I show in ACM)

The issue with the spinos is, that they're using a shared spawner with fishes and otter so it's intended from the devs that they're not spawning to 100% every time. I already added more spawners where it makes sense to have a spino. I'm thinking about to add a single spino spawner to the map, but that will be in update 3.0.

Ok, Dank Dir

Sorry for the slow reply, I'm not playing Ark at the moment.

We're aware that it's sharing with fish (and now otters) but it still seems that on Volcano they're unusually rare. Even with four people with packs of baryonyx clearing rivers for about 2-3 hours, we still didn't get enough spino sails for a boss. On Rag there's typically 2-3 at any point in time and on Island there's typically 3-6 however on Volcano it's almost always none at all.

You'll have a better idea than I but it may simply be that Island has a lot more spawners than Volcano.

@Xenoflot/Trevor if i have time i will add some spino only spawner to the map with the wyvern egg fix this weekend.

i find the spinos all in the south, east of the red obilisk in the rivers up top, one in the swamp near the desert border, last night i seen about 10 spinos up in these areas