Brachis spawn generally everywhere
Acros tend to spawn near the redwoods or generally the east half of vannaland, but spawn in most places
Ocean creatures in the ocean obviously
Cryolophosaurus in the snow, again obviously,
Concavenators i have not seen
I have not seen any deinosuchus, but i dino scanned and they spawn in vanaheim as their x variants
R acros spawn in asgard around the 60 latitude line
Not sure on this but id recon deinosuchus can also spawn on the swamp island?