Worn Fish or Reptile Tooth? (Post Oak Creek)

[Thomas.Dodson]

I took a vacation fossil hunting in North Texas to escape Hurricane Ida to much success. I hope to post a trip report with some of the finds when I get a chance and might need to post more ID requests later but this particular tooth from Post Oak Creek interests me a lot so I wanted to at least get this posted. It's rather water worn but I welcome any ideas you might have. Despite how it appeared in the field it now looks more fishy to me. Not sure it'll get past "fish". @ThePhysicist

 

 

[Kikokuryu]

I'm thinking Xiphactinus or Pachyrhizodus?

[ThePhysicist]

Yes fish, could be x-fish. Look forward to seeing the rest of your finds!