A Florida man is entering the Guinness World Record book for a unique reason — he has the world’s largest dinosaur feces collection.

George Frandsen of Bradenton has been entered into the "Guinness World Records 2017 Edition" for his collection of 1,277 pieces of prehistoric defecation, Live Science reports. The collection includes specimens from 15 states in the U.S. and eight countries with the collection being documented at the South Florida Museum in Bradenton.

"What got me interested in finding and collecting coprolites is the story they tell of prehistoric life and ecosystems," Frandsen said in a Guinness World Records video. "No other fossils can tell you so much as coprolites can."

Frandsen told Live Science that his favorite piece is known as "Precious," which is his "largest true-to-form coprolite specimen" that weighs more than four pounds. The news release from Guinness Records added that the specimen was discovered in South Carolina and was produced by a "huge crocodilian species" that was around 20 feet long.

"Why I say true-to-form is because it still carries the original form from when it was made 20 million years ago," he told Live Science. Each specimen is "as hard as a rock" and has no smell with each piece having to be inspected by the record committee before entry.

Read more at Live Science.