I don’t know, to me it seemed like one of the more straightforward ‘hidden word’ ones. “cantab” is a dead giveaway, if I don’t know the meaning of a word but it contains simpler words, my spidey sense immediately goes off.

Only if you don’t clean the filters.

This is actually doing a disservice to all the work paleontologists do in reconstructing. There was indeed a time where there was too much stretching over bones, but this is something they are now very aware of. Also keep in mind reptiles, avians and and mammals have a very different relationship between bones and body. It’s mainly mammals that tend to add a lot of bulk like that.