Very weathered and dense piece of bone found at Big Brook - could it be terrestrial fossil that got swept out to sea?

[TRexEliot]

This piece caught my attention because the small bit of remaining outer surface on the bone has a very weathered look to it, which was reminiscent of a large piece of bone I found some years ago that people here told me was likely of terrestrial origin. The bone structure is also quite dense compared to the marine reptile pieces I've found, which as I recall was one of the things I was told last time was diagnostic of terrestrial bone. Any chance this could be of terrestrial origin?

 

[Life Finds A Way]

Looks like a partial enchodus jaw to me