Bonnethead began with a taxon that had a highly pronounced cephalofoil (most likely that similar to the winghead shark, "Eusphyra blochii"), and was later modified through selective pressures. Thus, judging by their smaller cephalofoils, bonnethead sharks are the more recent developments of a 25-million-year evolutionary process. This species occurs off the American coast, in regions where the water is usually warmer than . It ranges from New England, where it is rare, to the Gulf of Mexico and Brazil, and from southern California to Ecuador. During the summer, it is common in the inshore waters of the Carolinas and Georgia; in
Revenge of the Creature dismissive of the production. Although "Revenge of the Creature" has been broadcast on television in red-and-blue-glasses anaglyph form (e.g., in 1982 in the San Francisco Bay area), it was originally shown in theaters by the polarized light method and viewed through glasses with gray polarizing filters. A "flat" version without 3D was also released. In 1997, "Revenge of the Creature" was mocked on the comedy television series "Mystery Science Theater 3000", marking its first episode on the Sci-Fi Channel. Universal released "Revenge of the Creature" on DVD in a boxed set, along with "Creature from the Black Lagoon" and "The