A dinosaur saw Paris A dinosaur was seen in Paris on June. It was not a typical youtuber's joke, neither the commercial campaign of Jurassic World, it was not an illusion neither. The skeleton of a very special dinosaur was exposed in the first stage of the Eiffel Tower. It was an auction, an extremely expensive one in fact. The bid started from 1 million euros and rose until 1.58 m € paid by a private buyer, the identity of whom has been kept in secret. It is common that unaffordable objects are sold to private wealthy hands. It has been happening with paintings, celebrity's belongings, books, and like this case, with pieces of natural history. The question is how good are these types of transactions? It seems they are legal. The skeleton was found in an USA excavation with all the clearances fulfilled, it went out USA fulfilling all the applicable exportations procedures. But, can we can afford it? What is the impact of hiding treasures. Universities and museums cannot spend this incredible sum of money, only private handlers can do it. But this is not new. Historically we have had "mecenas" and philanthropist, acting in arts, science, etc. Think about, could arts have evolved without those figures in the past? it seems clear that the private money is need. But this is a special case, a skeleton of what it could be a new specie, with an unprecedented 75% conservation degree, now kidnapped into private hands. What are the impacts of allowing this skeleton to be enjoyed by private hands? First, it is threatening knowledge progress. Knowledge has been evolving parallel with our science tools. As better tools the science has better understanding of the reality. Every time a new technique is discovered, the review of our museums and universities assets can result in revealing knowledge. Second, the risk of loses is certainly high. Those are heavy bones, treacherously similar to rocks, but extremely fragile in fact. And worse, this specimen is worth more sold by parts than in a whole, especially in black market, that will pay a lot only for a teeth. Finally, this could engage the black markets. Some places in the world have large assets of fossils being poor locations. It seems clear the risk of spoliation in poor countries could rise with these transactions, except we legislate. Topics like this one, that seem to have less impact in our lives or in the planet compared to others, are also asking for our reasoning and action.