Comment on Monsters on six legs by Hyrotrioskjan
Well, what do the biggest predators here look like? Similar?
The biggest predators are vertebrates, however they live aquatic.
But the biggest land animals are still pseudo-athropods and are relatives of the Pachytholids.
But the biggest land animals are still pseudo-athropods and are relatives of the Pachytholids.
The hemichordate/vertebrate mix doesn't seem like a very plausible fauna. I mean, the hemicordate-ish line you've included here is pretty much advanced enough to survive without a complex vertebrate fauna altogether. Or are there more than one lineages? Then it's gonna be possible, complex hemichordates and vertebrates together.
There are indeed several lineages, beside the pseudo-athropods and the few vertebrates which mostly inhabit the deep sea, there are also some "real" athropods, without any bone like structures.
So like earth, but different lines?