Big bone, Pleistocene, Miocene (or recent)

March 7

Recently found this quite large and heavy (piece of) bone by the Schelde river shores in Antwerp, Belgium. Most pieces that wash up here are Mio/Pliocene but actually most Neogene layers are represented in the area as well as Pleistocene and more recent. I'm thinking whale because of the size, but honestly i don't have a clue.

Measurements are 22cm x 10cm x 5cm