Squalodontidae is an extinct family of toothed whales named by Jean-Pierre Sylvestre de Grateloup in 1840. It was originally believed to be an iguanodontid dinosaur but has since been reclassified. Squalodontidae is derived from the word `Squalodon`, literally meaning `shark tooth`. Unlike other whales which have peg-like teeth, those of squal...