Hi there,

I wonder if you may help identifying which bone is the pictured one, and to which kind of animal may have it belonged. It is fossilized, and was found at the seaside near Trujillo, Peru (in an highly energetic beach full of rolling stones). It has an articular surface, and by its size I think it would belong to some Cetacea.



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Hi Claudio,

I don't think this is cetacean bone, as that is normally very dense. To me this looks more like a section of the skull from around what would have been the horn core of a polled cow. I think that the part that looks like an articular surface is actually the healed region following the removal of the horn.