World’s Largest Fossilized Feces Collection Opens as a “Poozeum”

For over two decades, George Frandsen has been collecting fossilized poop, known as coprolites. And now his passion has become permanently enshrined with the opening of the Poozeum, the Coprolite Museum in Williams, Arizona, USA.

Frandsen, who made the Guinness World Records for the world’s largest collection of coprolites, quit his healthcare job in 2024, sold his home, and relocated over 2,000 miles to construct a museum dedicated to his roughly 8,000 pieces of poop. The free museum offers a truly one-of-a-kind experience that the website calls “a captivating fusion of a natural history museum, art gallery, and carnival sideshow.”

While some visitors may initially react with an “ewww” to the concept, Frandsen’s assortment of coprolites from creatures across prehistoric times has drawn fascination from those who learn about the scientific significance of the fossilized feces.

Coprolites are composed of phosphates, calcium, silicates, and a small amount of organic matter, and act as natural time capsules, preserving things like bone fragments, scales, feathers, and even traces of muscle tissue from the animals’ meals. The shape, texture, and contents of the fossilized feces can reveal insights about an extinct creature’s diet, anatomy, and environment that skeletal remains alone cannot.

Credit: James St. John, CC BY 2.0 , via Wikimedia Commons

Among the museum’s centerpieces is the “Barnum” specimen – the largest coprolite ever discovered at over 2 feet long and weighing nearly 20 pounds (9.3kg). Thought to have been excreted by a T-rex, it is approximately 70-66.5 million years old. Visitors can also take photos next to a 4-foot-wide replica of a titanosaur coprolite and admire creative exhibits like the bronze “The Stinker” sculpture humorously depicting a T. rex pondering on a toilet.

From initially repulsive hunks of petrified poop to scientifically priceless paleontological artifacts, Frandsen’s one-of-a-kind collection is certainly an incredibly unique museum experience. The passion project allows visitors to intimately connect with the wildly different – yet amazingly preserved – bowel movements of Earth’s prehistoric residents.

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