Fossilized dinosaur tooth of an Aquilarhinus or Kritosaurus inside of a gem jar showing pronounced serrations along the cutting edge.

A dinosaur tooth of an indeterminate hadrosaur, possibly Aquilarhinus palimentus from the Aguja Formation in Brewster County, Texas, USA. Aquilarhinus was previous referred to Kritosaurus and Gryposaurus. #FossilFriday

#dinosaur #fossil #paleontology #aquilarhinus #ornithopod #ornithischian