Shell-Shock: Three University Of Arkansas Students Find World's Longest Nautiloid Fossil FAYETTEVILLE, Ark. -- Three undergraduate students from the University of Arkansas made a world-class discovery this week when they uncovered a 325-million-year-old nautiloid fossil just yards from two of Fayetteville's busiest roads. At exactly eight feet in length, their find represents the longest actinoceratoid nautiloid fossil in the world. On Jan. 20, while the University community observed the Martin Luther King, Jr. holiday, freshman geology major Sarah Kee and senior Kevin Morgan set out to hunt for fossils. Their excursion led them to a culvert near Interstate 540,...