Bivalvia

Though I am not completely sure I think that this fossil very well could be of the class Bivalvia, and if it is it would be impossible for me to categorize it further. It is very weathered and notched, most likely due to chemical erosion. This is a big maybe, but I stuck it in here just to show some of the neat things one can find even if they can't say exactly what it is.

This is definately a bivalve but it was damaged to the previously mentioned runaway vinegar solution so its hinge line is now destroyed. It was probably a steinkern as well. Unfortunately I have not been able to categorize it further than its class. Bivalves, formerly known as pelecypods, were known to occur as far back as the Precambrian and we all know of modern examples. They generally occur in oceanic waters but are known to occupy fresh water as well. They can survice from shallow to deep waters where they filter feed on passing organic debris.