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I recently collected a few fossils from Schoharie County in upstate NY. Among them are the pictured. I am hoping someone can tell me in detail exactly what I have, in as much detail as possible. I apologize in advance, as usual, but I am still learning and am trying to get as mush specific detail as I can. The first was hard to effectively photograph, but appears plant-like. It is hard to make out, but the pattern continues in a circle. I've included two photos, one with my hand for scale. Coral perhaps? The second has several things, but I am interested primarily in the lower right side. Assuming that is a type of bryozoan? The third I have not been able to find an exact match for online, but looks like a bivalve of some variety. The forth a brachiopod, not sure if it is clearly enough defined for an identification. On the last one I am stumped. I've included two photos, again, one with me holding it for size. It is quite small, and has a tiny raised area that is almost worm-like, and the patterned area, scale-like. As usual, thanks in advance. I am learning a lot from all of you and appreciate your kindness and patience The photos are not appearing in the order described above, but hopefully you can identify each based on the descriptions.

I think this could be a bivalve of some kind. Oyster? It's composed of sandstone. It's about 7 inches long, 5 inches wide and 2 inches high on one side,1 inch on the other. Are those fossilized barnacles growing on top? Some giant oysters have been found in Texas and other southern states but I found this in a pile of field stone in my backyard, I live in Dodge county, Wi. I have searched for any other similar finds on WI fossil sites but couldn't find any. However, there are several quarries in the area which contain Cambrian period marine fossils, lots of the "regular suspects" but no giant bivalves. There is an area 60 miles north of here where they recently found trace fossils of giant jelly fish and I found a tiny one in limestone in Dodge county. They also recently discovered a giant Cambrian reef in Wauwatosa, Wi which is about 50 miles southeast of here in Milwaukee county. Would love to hear other opinions or ideas as to identification. See pics below Thanks!

Hello, I was wondering if this is an ammonite embedded in this bivalve?

Inspired by trip reports by other members on the fossil shells of the Middle Miocene Choptank Formation, especially @I_gotta_rock's report from 2018, over the past several months I have made a couple trips to Matoaka Beach Cabins in Maryland to collect some of the incredible invertebrate material exposed along the cliffs and in that way draw the quizzical looks of other collectors there combing for shark teeth. It is a lot of fun to just park myself along the beach and break down pieces of talus with a screwdriver to uncover hundreds, if not thousands, of shells. Unfortunately the shells are incredibly fragile so a lot of effort was taken to wrap the fossils in aluminum foil on the beach and to meticulously expose them with dental tools and toothbrushes and consolidate them with glue at home. Despite my precautions, many shells were lost, both on the beach and at home. I found everything along the beach and in talus falls, except for the large piece of the sand dollar Abertella aberti. On my latest trip to the Chesapeake Bay a man collecting shells along the beach asked me to identify a few things that he had found washed in by the tide. He asked if this fossil was a piece of turtle shell and when I told him that it was instead a piece of sand dollar and that it is rare to find a piece that large, he asked me if I wanted to have it. I of course graciously accepted his offer. I offered a couple of other fossils later on, but he seemed satisfied with what he had already found. There are so many fossil shells to be found along the cliffs of the Chesapeake Bay so I will try not to bore you with all of my finds. I think the gastropods are really cool so I have included all of my gastropod finds. Without further ado, here are my favorite finds: The only vertebrate fossil I found was this Aetobatus sp. ray tooth that was found lodged inside the opening of an Ecphora shell What is a post about Miocene shell collecting without a big Balanus concavus barnacle. This one was found in about six inches of water at low tide on my first trip. About the same time I found the barnacle I found this awesome chunk of Astrhelia palmata coral, which even has some bryozoan on it A couple crab claws found while searching the excess matrix compacted in the shells The aforementioned piece of the sand dollar Abertella aberti Now for the shells. First off are a couple Chesapecten nefrens. I love to find ones that have barnacles still on them. This was my largest one, measuring about 6 inches across. I found one that had both valves, but sadly one of the ears is missing Chesacardium laqueatum blackwelderi Atrina harrisii Stewartia anodonta Dosinia acetabulum blackwelderi Timothynus subvexa Ostrea carolinensis The largest shell found along the beach is the geoduck clam Panopea americana You can also find another species - Panopea goldfussi. I love how this one preserved in life position. All I had to do was dig some of the matrix out and glue the rest in. Glossus marylandica Mercenaria cuneata While finding the big gastropods was the real draw, I also really liked finding the tiny gastropods, which I only found at home after screening extra matrix or breaking extra matrix down by hand. The first of the tiny snails to show off are these three species of Calliostoma. From left to right is Calliostoma aphelium, Calliostoma philanthropus, and an unknown species of Calliostoma. Perhaps my favorite tiny gastropod - the predatory murex snail Typhis acuticosta I believe this one is Surcula sp. Perhaps the smallest fossil I have ever found- Teinostoma calvertense. Can you see it in the photo on the right? Terebra sp. Cymatosyrinx limatula Mariadrillia parvoidea Nassarius peralta Nassarius peraltoides Neverita duplicata The moon snail Euspira heros is by far the most common gastropod. I found a dozen of different sizes. Here are only a few. Mariacolpus octonaria Turritella subvariabilis Crucibulum costatum Crucibulum multilineatum Scaphella virginiana I love this juvenile Busycotypus rugosum whelk shell Spinifulgur spiniger oslowensis