Keywords: PZSL1853Page112.png Rosmarus Odobenus rosmarus rosmarus <small> Linnaeus 1758 </small> en Atlantic Walrus sketch copied from the 1560 addendum to Conrad Gesner's Historiae animalium and originally derived from Olaus Magnus' 1539 Carta marina; figure B-B Ros marus piscis Proceedings of the Zoological Society of London http //archive org/details/proceedingsofgen21zool vol 1852 http //www archive org/stream/proceedingsofgen21zool page/n147/mode/1up page 112 1853 published 1854 R C West PD-old-70-1923 <gallery> File Walrus on Carta Marina jpeg Ros marus piscis from Magnus' Carta marina File Walrus 1551 png Derivative from Magnus' 1555 Historia de Gentibus Septentrionalibus etc </gallery> PZSL 1853 Walruses in art Historiae Animalium Liber IV Odobenus rosmarus rosmarus Sea monsters |