Hi Everyone!
I need help identifying a fish concretion from the Cretaceous of Brazil. I think it's a species of Rhacolepis but I don't know for certain. The thing is, I was given this by an elderly friend of my dad's over 10 years ago after this fellow heard I like fossils. He told me he got this at a flea market several decades ago and that it was from the Brazilian Cretaceous but he didn't remember what species it was. Then he moved away and passed a couple months later. Definitely one of the stranger ways I've acquired a specimen, but it's the best fish I have (it came with both halves and is pretty three dimensional) and I'd love to know what exactly it is. Hopefully the pictures are decent.