Hi!
I found this on the beach of a freshwater lake in Uruguay that has in the past been part of the pacific ocean. I think it is an inner ear bone of some marine mammal, but I don't know from how long ago or from what kind of animal. I'm sorry that there's no scale, but it's an inch and a half long, one inch wide and on average about 1cm thick and the holes are about 2mm diameter). Can anyone help?? I can give more information about the location if it would be useful.
Thanks!!