Megalodon (Carcharocles megalodon), meaning “big tooth”, is an extinct species of shark that lived approximately 23 to 3. 6 million years ago (mya), during the Early Miocene to the Pliocene. It was formerly thought to be a member of the family Lamnidae, and a close relative of the great white shark (Carcharodon carcharias). However, presently there is near unanimous consensus that it belongs to the extinct family Otodontidae, which diverged from the ancestry of the great white shark during the Early Cretaceous. Its genus placement is still debated, authors placing it in either Carcharocles, Megaselachus, Otodus, or Procarcharodon. This is because transitional fossils have been found showing that Megalodon is the final chronospecies of a lineage of giant sharks originally of the genus Otodus which evolved during the Paleocene.
Jurassic Park, later known as Jurassic World, is an American science fiction media franchise centered on a disastrous attempt to create a theme park of cloned dinosaurs. It began in 1990 when Universal Pictures and Amblin Entertainment bought the rights to the novel by Michael Crichton before it was even published. The book was successful, as was Steven Spielberg’s 1993 film adaptation. The film received a theatrical 3D re-release in 2013, and was selected in 2018 for preservation in the United States National Film Registry by the Library of Congress as being “culturally, historically, or aesthetically significant. ” A sequel novel, The Lost World, was published in 1995, followed by a film adaptation in 1997. Subsequent films in the series, including Jurassic Park III (2001), are not based on the novels. Numerous video games and comic books based on the franchise have been created since the release of the 1993 film, and several water rides have been opened at various Universal theme parks. As of 2000, the franchise had generated $5 billion in revenue, making it one of the highest-grossing media franchises of all time.