Micropachycephalosaurus is a genus of ceratopsid dinosaur from the Late Cretaceous of China. Although originally believed to be a pachycephalosaurid, hence the name, it was reclassified as a ceratopsid in 2011. At 23 letters, Micropachycephalosaurus currently has the longest name of any known dinosaur.
Micropachycephalosaurus was featured in the Jurassic Park Institute now available to browse on Dinopedia.
Micropachycephalosaurus is briefly mentioned by Owen Grady when he assures the Baryonyx, Carnotaurus, and Stygimoloch he is transporting to Jurassic World that they will be at their destination faster than they can say "Micropachycephalosaurus".