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Photos of Animals, Fish, Birds & Bugs on a Canoe Trip

It's always hard to judge the scale of photos like this but the skull looks smaller than I'd expect. Are they smaller than I think? Was it larger in person? Or was it a juveline?

Alan
Yeah, I usually give something for scale, but.... I believe this was an old female. The skull was smaller than expected, and the molars were well worn. I've handled 500 pound grizzlies, and this was a far cry from that! Maybe 300#?? It's been a long time since I've had to estimate bear weights (for chemical immobilization).
 
Was wondering what bone it would be with that sharp point. My guess: the mandible of a baleen whale or a rib.

View attachment 149588
Yes, the lower mandible was how it was explained to me too.

We came across it on a small island called Muskeget, off the west end of Nantucket.

Muskeget is the southernmost breeding ground for grey seals, making it popular with Great White Sharks. Muskeget also features a unique and endemic species colloquially called the “Muskeget Mouse,” which is a beach vole.
 
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