From this story on Kentucky.com
A day of fishing for a western Kentucky man turned up more than a good catch for dinner. Charles Ruphard of Owensboro hauled in an animal skeleton that museum administrators are interested in learning more about. Ruphard and his wife, Lee, went fishing June 10 and decided to walk along a river bank, which he declined to identify to protect the site. Ruphard told The Owensboro Messenger-Inquirer his wife saw some bones sticking out of the bank about 10 feet from them and realized the bones were large.
"You could see places of bones sticking out for 7 or 8 feet, and we thought this could be interesting," Ruphard said. William Silvia, a University of Kentucky animal science professor and researcher in the school's College of Agriculture, reviewed photos of the bones, then retrieved them. Silvia said the bones were a bison, and a colleague who is a state parks naturalist believes that the animal is less than 10,000 years old.
OK, can you top that? What's the most archeologically or historically significant item you've ever found on a fishing trip? And no, pop-top beer cans don't count...