Rare dinosaur skeleton sells for $30 million at Sotheby's 'Geek Week' auctionbr br The largest piece of Mars ever found on Earth was sold for just over $5 million at an auction of rare geological and archaeological objects in New York on Wednesday, while a juvenile dinosaur skeleton went for more than $30 million. br br READ MORE : br Subscribe on our Dailymotion channel and receive all the latest news from the continent. br br Africanews is available in English and French. br Website : www.africanews.