The team analyzed 30 fossil sand
tiger shark teeth exhumed from Banks Island and 19 modern sand
tiger shark teeth from specimens caught in Delaware Bay bordered by Delaware and New Jersey.
To learn more about such gnashing, the student mounted four to 10
teeth from a
tiger shark (Galeocerdo cuvier), a sandbar
shark (Carcharhinus plumbeus), a silky
shark (C. falciformis), and a sixgill
shark (Hexanchus griseus) onto separate sawing blades.