![File:Cladoselache sp. (fossil shark) (Cleveland Shale Member, Ohio Shale, Upper Devonian; Rocky River Valley, Cleveland, Ohio, USA) 1 (33355976530).jpg - Wikimedia Commons File:Cladoselache sp. (fossil shark) (Cleveland Shale Member, Ohio Shale, Upper Devonian; Rocky River Valley, Cleveland, Ohio, USA) 1 (33355976530).jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/5/54/Cladoselache_sp._%28fossil_shark%29_%28Cleveland_Shale_Member%2C_Ohio_Shale%2C_Upper_Devonian%3B_Rocky_River_Valley%2C_Cleveland%2C_Ohio%2C_USA%29_1_%2833355976530%29.jpg)
File:Cladoselache sp. (fossil shark) (Cleveland Shale Member, Ohio Shale, Upper Devonian; Rocky River Valley, Cleveland, Ohio, USA) 1 (33355976530).jpg - Wikimedia Commons
![Lee on X: "@LadyNaturalist @AlongsideWild Here is the fossil shark # Cladoselache with a "pocket head" invertebrate #Concavicaris in its stomach! At 360 MILLION years old, @CMNHvertpaleo fossils represent some of the oldest Lee on X: "@LadyNaturalist @AlongsideWild Here is the fossil shark # Cladoselache with a "pocket head" invertebrate #Concavicaris in its stomach! At 360 MILLION years old, @CMNHvertpaleo fossils represent some of the oldest](https://pbs.twimg.com/media/DWvra34W0AAdSpE.jpg)
Lee on X: "@LadyNaturalist @AlongsideWild Here is the fossil shark # Cladoselache with a "pocket head" invertebrate #Concavicaris in its stomach! At 360 MILLION years old, @CMNHvertpaleo fossils represent some of the oldest
![Day 19: Cladoselache. My second shark. You can really see the resemblance of a regular fish with this guy, in the fins especially. They fossils preserve very well and as a result, Day 19: Cladoselache. My second shark. You can really see the resemblance of a regular fish with this guy, in the fins especially. They fossils preserve very well and as a result,](https://i.redd.it/v1jfnzapp9c61.jpg)