Avid paleontology fans — and I know there are thousands of you reading this column right now — may have taken note of the discovery recently of what scientists are calling a fossilized jawbone fragment from a giant, prehistoric, clam-eating shark known as Ptychodus mortoni. The handful of you out there who aren’t avid paleontology fans might have missed this little news tidbit, but it’s something that I believe merits further discussion. Continue reading »