What did I find on the beach? Is it a fish or mammal Vertibrae? (pics)

[QUOTE=Phlosphr]
It’s a private beach, in Long Island Sound. We do get a lot of tankers and such going by…but they are at least 12 miles offshore. No butchers or other such things in the area. I’ll chaulk it up to happenstance I guess. Someway, somehow this vert. found it’s way to this beach…
[/QUOTE]

Given the ship traffic through the sound, plus the population density around it, I wouldn’t be surprised to find almost anything washed up around it. And it could have been tossed off a pleasure boat rather than a tanker.

Bear in mind that when the bone first entered the water it could have still had some meat attached, and so could have floated some distance.