The fossil is a belemnite, Hibolithes jaculoides (Swinnerton, 1937), from the Lower Cretaceous (Late Hauterivian, ca. 118 Myr) from the coast of Helgoland Island, Germany. It shows a heavily distorted growth pattern attributable to parasitism. This video was first published as Movie 5 of direct.sref.org/1726-4189/bg/2005-2-133 .

j vimeo.com/5027102

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