Something i don't understand about the new size estimate for Dunkleosteus

[andrewsaurus rex]

New, smaller size.  Fine.  New shape.  Fine.  But the new construction of it has shrunk the head considerably....the skull size is known so why did it get smaller on the new vs. the old construction?


 https://www.reddit.com/r/Paleontology/comments/1iz1pk2/what_do_you_think_of_the_recent_dunkleosteus/

[crazy8wizard]

Part of it is just an error on the side of the graphic, but also having the back "shield" portion of the armor plates as part of the back would make the head look smaller.