I'd be glad if someone could help me to identify a fossil I've purchased in an online auction. It's a cetacean vertebra which belonged to an older German collection, sadly I don't know where the object was found. However most fossils in the collection originate from northeastern Germany, so I suppose the vertebra might also come from the same area. The vertebra is approximately 42cm wide, 31cm high and 13,5 cm deep and the seller suggested the species could be Orcinus citoniensis but he also wasn't sure of that.
Thank you for your reply. You could be right since the biggest part of the fossil collection the vertebra belonged to came from late Pleistocene deposits, not Pliocene layers as Orcinus citoniensis would suggest. So maybe it belongs to a Pleistocene or early Holocene minke whale.