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Keywords: Belemnotheutis phragmocone ventral.jpg en A phragmocone showing the ventral aspect of the chambered apex with two parallel longitudinal bands extending upwards b <br/> <br/> actually dorsal Mantell was incorrect http //books google com/books id tGwOAAAAIAAJ printsec frontcover v onepage q f false Philosophical Transactions of the Royal Society of London For the Year MDCCCXLVIII Part I Gideon Mantell 1848 PD-old-100 Belemnotheutis |