How big is the biggest piece of fossilized dinosaur poop?

The largest known fossilized dinosaur poop, nicknamed "Barnum", is roughly 2 feet long and 6 inches wide.

✅ The biggest piece of fossilized dinosaur poop ever found:

• Length: ~67 cm (26 inches)
• Width: ~15 cm (6 inches)
• Weight: ~20 pounds (about 9 kg)
• Nickname: "Barnum" (named after famous paleontologist Barnum Brown)
• Location found: South Dakota, USA
• Estimated age: About 33 million years old (though technically not from a dinosaur — likely from a prehistoric crocodile or other large carnivore)

✅ For actual dinosaur-era coprolites:

• Most dinosaur coprolites are much smaller — usually a few centimeters.
• But some sauropod (huge plant-eating dinosaurs) coprolites have been found as large as:
• 30–40 cm long (12–16 inches)
• Several kilograms in weight