User blog comment:Adsper/All Possible Mobs/@comment-179.38.124.84-20190709225615/@comment-5815431-20190711214844

For Platybelodon it was a coincidence. For the other 3 mobs its because they currently are teaming up with a group to put Carboniferous stuff in the mod (and accidentally had Tiktaalik on their Carboniferous list.) Carboniferous stuff on this list like Arthropleura or Edaphosaurus might show up in the mod soon.