Hi all,
Was looking through some fossils online and came across this one. It was in the "Exclusive fossils" section; so I got really surprised seeing this "pebble" in there.
The seller claims it is the fossil skull of a Hybodus shark.
Now to me this is very weird. As we all know, sharks have a cartilaginous body; so their skeleton doesn't fossilize easily. That's why I am doubtful about the skull of this shark being so well preserved, with the brain and all. Plus, to me this just looks like a funny-shaped pebble. The only thing that makes it more believable