I just read that a very interesting fossil of a belemnite was discovered at the Plattenkalk of Nusplingen, and it had a preserved beak. The two parts of the beak are disarticulated and very tiny. You can see a photo of the fossil at this site: http://www.spiegel.de/wissenschaft/natur/0,1518,551726,00.html
(You have to click on the small photo which where "rostrum" stands over a part of a belemnite)
(You have to click on the small photo which where "rostrum" stands over a part of a belemnite)