The age of the creature, all the fleshy parts that long ago dissolved, where it came from, what it became, all of that conjecture being passed off as facts, as if these people were there to photograph the creature.
Amazing.
It must take a great imagination to be a "paleontologist".
I agree...although a Darwinist, I always cringed a bit when paleoanthroplogists built a complete hominid from one fossil tooth.
The age is determined by geological dat based on the sediment in which the fossil is found.
The "fleshy parts" can be very closely approximated on the basis of marks for muscle attachments on the bones.
The realtionship to other species can be roughly determined by osteological features.
Imagination, yes, but a lot of fact enters into it also.