I run a single player game on a private server, and ever since allosaurus was released I haven't seen a single one show up on my map. I heard someone suggest that the cause of this may be a mod conflict, so I started a test, removing each of my mods in turn to see if this had an effect.

Sure enough, I have found two mods which prevent allosaurus from spawning, and this mod is one of them. When the mod is active on the server, no allosaurus will show up at all. But when the mod is removed, they will appear.

If this bug could be fixed that would be awesome, thanks for your attention.