This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Belemnotheutis phragmocone ventral. en phragmocone showing the ventral aspect of the chambered apex with two parallel longitudinal bands extending upwards br br actually dorsal Mantell was incorrect google id tGwOAAAAIAAJ printsec frontcover onepage false Philosophical Transactions of the Royal Society of London For the Year MDCCCXLVIII