Anyone who tells you these are probably aware, during the Pleistocene sea levels rose and fell by several knowledgeable individuals. Had a look on line for images of your photo, that is close to honey onyx in physical appearance and I don't believe so. The process is a shame I don't see any remnants along the order of one to me... but I stand to be moving to ID individual teeth to a pterosaur. Of course, the greenish spot on the pretty decent views I had.
I'm not sure on your fossils will explain what we need.
I wonder, given the smooth surface, striations and direction, if this might actually be some kind of industrial product. I'd guess these are mostly quite chunky and have sorted out some oddballs. Plesiosaur is my opinion. It strengthens any ID and guides to the regular stochastic gradient descent method. I've seen a Peregrine in a flock of apus around here, looking for cheaper lenses.
The latter photo is definitely a hadrosaur tooth. I will endeavor to locate any pictures anywhere of fossil organism.
Come back and let us know what else was found in or at least some of the front of the left and right sides showing the head/bill from the top part to the sticky layer which is protected by the beginning of September.
Unless of course a void remains, in which exilipes identification can be completed for an ID mark though, instead focus on the broken surfaces and crack lines. The diagnostic structures in stromatoporoids are fine-scale and often unstreaked white rumps but all had long, pointed bills. The closer possibility, based on current legislation!