He is an avid fossil hunter, and enjoys trying to find Megalodon teeth.
Also someone behind the scenes of Daredevils has a grudge on Jonas, Michael Maren, and is planning to get revenge on Jonas using his pet Megalodon nicknamed Scarface, so named due to terrible scars caused by a territory dispute with his brother; the same Meg Terry is pursuing (both of which are Angel's litter from the Trench in the last book).
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But neither of the spouses are aware that they have entered the latest feeding zones of Megs, as Angel has returned to surface waters from the trench and is being pursued by more individuals.
After studying a biomechanical model of the fish's jaws, scientists at the Field Museum of Natural History and the University of Chicago concluded that Dunkleosteus had the second most powerful bite of any fish (megalodon being the strongest).
In 1986, Rafael Gioia Martins-Neto in a lecture during the 38th Reunião Anual da Sociedade Brasileira para o Progresso da Ciência at São Paulo, reported the find of a pterosaur, that he named Pricesaurus megalodon.