Gembone

Due to the rarity and irreplaceability of dinosaur bones, the acquisition, ownership and use of gembone is a contentious topic.[4] In many countries it is illegal to dig up and sell dinosaur bones without permission, for example the United States, where it is illegal to dig for bones on public land without a permit from the Secretary of the Interior.[5] As with all dinosaur specimens, collectors may find specimens by making legal deals with private landowners or by purchasing illicitly obtained fossils.[6][7] In recent years, several new species of saurids have been identified from mineralised dinosaur fossils, highlighting the importance of these specimens to science.[8][9] Scientists are also concerned that a lot of context is being lost when fossils are pulled out of the ground and sold by amateur hunters, while the collectors state that the fossils will just be lost to the ages if left to erode in the ground.[10] In 2020, the United States Court of Appeals for the Ninth Circuit ruled that under Montana law, dinosaur fossils are not minerals because, regardless of the mineral content of the skeleton, they are "valuable because of characteristics other than mineral content".[11][12][13]