Another piece of bone found (help)

[mefaunals]

Hello! Last time i posted a fragment of bone that unfortunately was not telling much, but recently i found another piece of bone but again i have failed to identify what piece of bone this could have belong, outwardly looks like a footbone of a mammal but i'm not sure, again, i found this in place that may range from late pleistocene to late Miocene, Central America. Anyone that may be familiar with it? it is missing two pieces

[Shellseeker]

El Salvador is pretty close to Florida, 

If I found this bone in the Peace River, it would be the spinous process of a Dugong Vertebra, See what I circled in red..