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Hello all! Sorry for the lack of measurements in these photos, I’ll be sure to upload some soon once I get the chance to. This is my favorite find so far in my early adventure of fossil hunting in western New York. I am more well versed in vertebrate paleontology in the central plains, so I apologize for my lack of knowledge on these earlier guys. I found this one in a rock exposure along a parking lot adjacent to Bennet Quarry- this is where hundreds of eurypterid specimens have been collected. I assume that the rock this is from is similarly aged, and a part of the Bertie formation. It is a bit over an inch long, but I will come with more measurement photos. Note the spiral pattern- is this a straight shelled nautiloid or something else entirely? This was just my best guess. Thank you!

I opened this rock up the other day to expose this really cool plate of orthocone nautiloids (among a bunch of other stuff). Naturally, the first thing that jumped out was the very white, almost feathery looking preservation inside the one nautiloid. I’ve worked in this formation a lot (Needmore, in WV) and I only ever see this very white, very fragile material inside of fossils. So I suppose my question is, is there any way to know what that material is? Why it forms? The other specimens I’ve collected with it are likewise nautiloids or in a few cases goniatites. Always on the inside of the shell, never a replacement for the shell itself. When I found this one today though it did put me in mind of this other find I had last year that I couldn’t identify (pictures also included). Likewise had a portion of a 3 dimensional interior replaced by this fragile white mineral. Submitted this one to the forum already and the only responses I got were that it’s a concretion. Being an amateur, I’m always very ready to accept any professional opinion on here. This was the only case where I’ve been hesitant. Having worked in this formation a lot, I really don’t find concretions like that. Anything I’ve ever found that has been made up of these materials has been a fossil of some sort. So anyway! Main question is in regards to the white mineral and what it might be, at least in regards to the nautiloid. And also, if someone wants to come along and magically vindicate me on that second specimen, it wouldn’t hurt my feelings.

Howdy folks, Last weekend I returned to a place in Texas that I have collected marine fossils at previously. The owners of this area have specifically asked that I not share any details on the location, but it’s a bit of an anomaly as it appears to have a number of fossil bearing matrix including sandstone, shale, limestone, and the thickest mud I’ve ever seen. It doesn’t match any of the USGS data either. I found a number of things there that I would like to preset, but the main one is this: The little plates that make up this stone form a spiral and they shine like opal / ammolite. This tear drop shape is something I’m familiar with as I have another one, smaller, that also shines, as well as chert nodules of the exact same shape that I suspect are related. Here are a few other things I collected at this location: this piece of limestone is rather large, about 20lbs, and it’s filled with things I’m not even remotely qualified to ID. It deserves its own post which at some point I’ll get around to. I collected this at the same location years ago. I think it’s an orthocone or pseudo-orthocone nautaloid. Well, half of one at least. Not sure really, but it also deserves its own post.

Good evening everyone! Hope everyone is safe and healthy! Found this little (15mm) "ammonoid", that, to the best I can find is an example of a ridged ammonite Neoglyphioceras sp? (Unklesbay Common fossils of Missouri 1973). It was found in Pennsylvanian Winterset limestone in Kansas City. Is this a fair observation/guess? Thanks for any input! Bone

Found this in pecan gap chalk, nautaloid?

I found this today on highway MM in eastern Missouri. It's about an inch and a half long that tapers down. It has ridges about every ,5cm and long thin striations that run along it