Ancient shark species, that lived hundreds of million years ago, have been discovered by scientists in the world’s longest cave …
![](https://adsmarky.com/wp-content/uploads/2024/03/two-ancient-shark-species-named-troglocladodus-trimblei-and-glikmanius-careforum-discovered-in-mammoth-cave-national-park-251x250.jpg)
Ancient shark species, that lived hundreds of million years ago, have been discovered by scientists in the world’s longest cave …