Fossil axial skeletal walrus material from the North Sea and the estuary of the Schelde, and a fossil Sirenian rib (Mammalia, Carnivora; Sirenia)

Ten fossil odobenid remains, and a fossil sirenian rib, encountered by us in a public and in a private collection since the publication of some earlier papers, are described and discussed. All fossils belong, anatomically, to the axial skeleton. Most specimens can be identified as Odobenus rosmarus, but in some cases determination as O. antverpiensis (Rutten,1907) may be possible.