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This Spinosaurus tooth is unusually large and slender with a sharp tip! It would have come the jaws of a Spinosaurus dinosaur the size shown in the Jurassic Park film. There are several repairs on this incredibly impressive specimen but there is no fabrication or artificial extension of the length. This tooth comes from a full-grown adult Spinosaurus dinosaur. With such a large creature, it is nearly impossible to find teeth in this size range that are not severely damaged and heavily worn considering the amount of food a large dinosaur would have had to consume to sustain such massive body mass.
WARNING: A common trick to fake large dinosaur teeth in the market is to attach either a bunch of sand mixed with glue on the end of the tooth's root to exaggerate the length or even worse, fabricate a giant impressive tooth by combining and blending multiple teeth sections together to appear as one massive tooth or to fabricate the bottom portion of the tooth and extend, by a much as DOUBLE OR MORE, the original length of the tooth before work started. The workmanship of a few notorious United States-based fakers is of the finest workmanship and VERY convincing in appearance. There have been European fakers also known to create and sell these large teeth. Don't be fooled when you are shopping for large dinosaur teeth of ANY SPECIES, not just Spinosaurus. These are common practices of both unscrupulous and uninformed dealers. We see these "doctored" large dinosaur teeth offered quite frequently and numerous junk, worthless teeth that have been converted and heavily modified are selling for ridiculously high prices, mostly at shows and on the internet. Ebay is one of the worst places for this where fraud runs rampant and unchecked in the entire rare collectibles field but some fossil show dealers and internet sites have been pawning these "creations" off for years now, as well!