US customs agents say they have seized eight tonnes of prehistoric fossils - including dinosaur eggs - which they suspect were smuggled from Argentina.
Fossilised dinosaur eggs are worth several thousand dollars
After an undercover operation, agents raided a fossil show in Arizona where the items were said to be on sale.
Among them were three dinosaur eggs - worth an estimated $4,000 each.
A US customs spokesman in Arizona said it was shameful that someone would plunder prehistoric treasures to line their own pockets.
The fossils also include prehistoric pine-cones and crab claws.
Customs agents say they began investigating after receiving a tip from Interpol, which said that a vendor at the Gem, Mineral and Fossil Showcase in Tucson, Arizona, might be selling fossils belonging to the Argentine government.
The customs operation is continuing. So far no arrests have been made.