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i found this feed and need some help IDing. calamite impression?

Hello everyone, greetings. I recently bought some fossil leaves. I contacted the seller and was surprised that the fossils were from here in Nicaragua, as I didn't know there were fossil sites here. I did not find information in pbdb navigator of the exact place where the seller found them since he collects them and found them himself, but in some studies on the net I found that the area of discovery is in the Brito Formation, a sector that covers a large part from the country's Pacific and dates from the Eocene, that is, from about 56 to 34 million years ago, which coincides with other description studies of some mammals found in this study area that I was able to read. My question is, is there any way to identify the leaves with a specific plant? I still haven't confirmed if what the seller told me is true that they are from here, but he assured me that they are, so much so that he offered me to go to the place where he found them, which I will probably go to in January next year to verify it on my own. I leave photos of the leaves that I took. These days I'll probably buy two more pieces from him that I also found from the seller in the same place.

So found a lot of fossil shells and fossil oyster shells in the limestone at canyon lake. Upon further inspection I found this hidden on lower corner. Is it a plant imprint?

I found this stone in my landscaping that looked interesting. To be clear I think this was moss rock from a stone yard, but I have zero information on where it is from and it has been in the yard for some years. I cracked it open and found lots of what look like plant fossil casts? The sandstone had been sitting wet and came apart surprisingly easily. Also if you are too rough with it the sand falls apart easily so the fossils are kind of delicate. I had some paleobond an applied that to the fossil areas, so they dont break down hope that was ok. It looks like it was an area where leaves and branches etc fell. Bits of bark and leaf patterns and what look like for all the world to me like pinecone or some kind of seed pods. Maybe I'm over imagining things. Any way here are some pictures.

Land plants evolved from "pond scum" about 500 million years ago, according to new research Very interesting . http://www.bbc.co.uk/news/science-environment-43116836

Found another interesting specimen on this Nodule from Smokejacks quarry, measuring under a 1.0mm approximately 0.3mm in length, was quite difficult to photograph. First impression due to it’s almost wing like features I would suggest possible insect. As the concretions of sideritic ironstone and fine grained calcareous sandstone have also yielded numerous insect remains including non-angiospermous plants (ferns and cycads, and a Sequoia-type cone). The quarry cuts through a section of the Wealden group, specifically the Weald Clay. The clay was deposited in a lake and floodplain environment during the Barremian stage of the Cretaceous period about 129-128 million years ago.

The Delaware Valley Paleontological Society field trip on Saturday May 13th looked like it was going to be washed out. The weather turned remarkably well. Temps and Humidity were great for pulling down a shale wall. More than 3/4 of the day was trying to start big blocks moving. Much chiseling and prying allowed a tall column to come tumbling down (my foot still hurts). The first picture shows the prying and the layer of Devonian Archaeopteris plants I've been tracing for 3 seasons. The second pictures shows what rolled out. The layer was true to form revealing a beautiful Archaeopteris macilenta frond. This would be my first near whole specimen of this species for me. That is my happy face after some several hours of hard labor. I have a lot of trimming to do and cleaning it up for pictures to submit for IPFOM. Nice start for the 2017 collecting year.