Auctioneers had hoped skeleton of dryosaurus would fetch half a million dollars . An 18,000-year-old , 7-foot-tall and 15-foot-long skeleton of a teenage woolly mammoth from Siberia took the auction 's top price , fetching close to $ 60,000 . Bids did n't come up , so the skeleton from Cretaceous Period went unsold . Skull of a teenage woolly mammoth sold for close to $ 500 at auction . Huge opalized fossil of an extinct sea creature went for almost $ 50,000 .
Auctioneers had hoped skeleton of dryosaurus would fetch half a million dollars . Bids did n't come up , so the skeleton from Cretaceous Period went unsold . Skull of a teenage woolly mammoth sold for close to $ 500 at auction . Huge opalized fossil of an extinct sea creature went for almost $ 50,000 .