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
Creature Catalogue recommend it. Brinsley felt that organizing the book in sections by type of creature rather than just alphabetically like "AD&D"<nowiki>'</nowiki>s "Monster Manual"s "should certainly make life easier for those DMs who design their own adventures, and know what sort of monster they want, rather than by name". He also felt that the comprehensive references to all the monsters appearing in the "D&D" boxed sets would solve the problem of having to remember in which set a particular monster appears. He concluded the review by stating, "basically, this book contains all you could ever wish to know about monsters in the