Hello fossil-lovers!   What do you think of this fossil jaw: is it real or fake? It seems a bit too perfect to me. The seller told me it was a mosasaur jaw from Brazil. It definitely looks like mosasaur material (teeth), but I've never heard of a mosasaur from Brazil, and in my books there isn't a single mention of any mosasaur species found in Brazil. I bought the fossil in a small shop selling only fossils and minerals (not online), somewhere in Auvergne, France.   In