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I've seen a lot of opalized fossils but none exactly like this so I was wondering if anybody could help me pinpoint exactly what it is and if it holds any value? The specimen is roughly 25 mm, semi translucent and has a fair amount of color.

This year I pulled the trigger on heading to Penn Dixie for the Dig With the Experts weekend! Definitely would highly recommend . I drove up from Boston to the Buffalo area on Thursday and spent the day Friday digging with @Malcolmt and @JamesAndTheFossilPeach. It was a blast! Thanks again guys for giving me a lay of the land. Credit to @JamesAndTheFossilPeach for the find of the day with a giant Eldredgeops (pic below). Saturday and Sunday were spent looking for trilobites in the roped off Dig With the Experts section of excavated shale with some success. Monday I drove back to Boston, and stopped to stretch my legs in Glenerie, NY to walk a stretch of road looking for Devonian brachiopods and gastropods. Got a couple! All in all, a great trip... although I'm nice and sore . Here are my takeaways from the weekend. I tried to get a bit of the entire Penn Dixie Ecosystem keeping at least one of everything and as many trilobites as I could find. I wish I took more pictures Saturday and Sunday, but I was too busy splitting shale . Cheers, Barret

Good morning, this item is cross posted on Facebook. This cool rock was found in the surf at Onslow Beach in Jacksonville NC. There are Gastropods, unidentified shell and mystery circles/ovals by the hundreds if not thousands. My question is what are these little round areas? The rock is shown wet in order to bring out the features listed. Size 1.5” x 1”. The rock is smooth to touch despite seeing texture in photo. Thank you in advance!

Hey Gang, Looking for some help on what these guys are. Family and/or Genus would be great. Probably Tampa member of the Arcadia formation? Hillsborough county, Florida. Miocene? Here's unfortunately a real lousy comparative photo of the other specimen, but with a much better view of the shape of the aperature. Any help is appreciated. Thanks! Regards, Chris

Last Saturday (April 6th, 2019) my wife and I made our second trip to Tully, NY to search for trilobite fossils. Unfortunately this was the second time I was unable to find a complete trilobite; I'll keep searching for them in other locations. I did find some other fossils that I thought were interesting enough to keep. The first photo is of the hill in Tully that I searched. On our first trip I tried to cover the entire hill while we were there, on our second trip I concentrated on smaller areas and had better results with finding fossils. A gastropod fossil which is next to another fossil that is round, flat and has a spiral pattern that is difficult to see in the photo. I found many brachiopods and some bivalves. This is the longest crinoid stem that I've found so far at Tully, it is about 13/4 inches in length. I'm guessing this is another crinoid stem. It has a much larger diameter than the other crinoid stems that I've found and it has "spikes". And two very small pieces of fossil from trilobites, which I was happy to find even though they are not complete. Thanks for looking.

Hello All Today and the next five days I'm on a family trip in the Ardennes. I am close to the region around Hotton. This is known for the many invertebrate fossils that can be found here. I went to a quarry first. I had to get permission from the owners but they gave if I didn't break the obvious rules of fossilhunting in an active quarry. The weather was very nice and the fossils numerous. What else does a fossilhunter want? I searched in an the loose rocks and didn't even had to use my hammer. The ground here is littered with fossil corals. In 5 minutes I found about 20 pieces. I have no Idea of the species yet.

A few weeks ago my mother, Stella (dog), and I went to a old-reliable heteromorph site in the Atco. After I dragged all my equipment to the part of the site that I was going to work, she went walking with Stella to look at some of the check-dams full of brought in Edwards limestone, chicken wire bags full of the brought in matrix put in the ditches for sediment control. In 2017 while we were at the same Atco site she was looking at a dumped pile of the Edwards and found a rare cidarid (see thread here) that compares well with Temnocidaris (Stereocidaris) hudspethensis. The sight of seeing that bizarre looking fossil just laying on the ground was quite a shock for both of us and motivation to hunt the dams more, and since then she has been casually looking over every check-dam hoping for another one. But because this Atco site is also rich in heteromorphs, I tend to focus all my attention on the chalk and neglect the Edwards dams, in these cases to my slight ire but also amazement at what she found with Stella. She did it again on the 9th, and found another cidarid that appears to be the same species as the last one from 2017, though from a different dam. I was at my Atco pile when she came over and showed it to me, completely blowing away all my finds in a very welcome way. The brought in Edwards is early upper Albian in age (about 107.6 mybp) and is a very fossiliferous crystalline limestone jammed packed with rudists and Chondrodonta sp. as well as the occasional gastropod. It makes for quite the sensory overload when trying to look for other things amongst the fossiliferous morass. The limestone is also interspersed with somewhat softer red sandstone that infills crevices in the much harder limestone and is more quickly weathered away in older exposures. I have tried so-far unsuccessfully to isolate the quarry from which the matrix originated to ask them permission to get a chance at the fossils before they are dumped in bags and hauled tens of miles to sites, damaging them. The problem is that there are multiple quarries in the nearest counties that expose the Edwards, namely Hood and Johnson counties. I have seen this matrix at sites all over North Texas, but I don't know if all that matrix is from the same quarry as the matrix from my Atco site since the Edwards is heavily quarried for fill all over the state. For now we are left to dig though the jumbled, knocked around bagged matrix, but even so the limestone is extremely hard so the fossils are not usually completely destroyed. And the site is big with lots of busted open bags. This latest cidarid is in about the same condition as the first, that being not so great but not so bad. Both specimens are missing most of their adoral sides and their apical plates are gone, leaving their circular apical scars. But they are still quite nice and intricately detailed, and also preserve some of their big mamelon tubercles, with the first specimen preserving 2 and the latest preserving 5, though there could be more under the globs of matrix stuck to them. This latest is also bigger. The first had a diameter of 52 mm at the ambitus and a preserved height of 37 mm, while the latest is 59 mm at the ambitus and 45 mm in height, though keep in mind that since they are both missing most of their adoral sides they would have had more height in life. The apical scar on the first specimen is 19 mm in diameter and on the second is 21 mm, with the crushed calcite fragments of the apical plates seen in the cavities left behind on both. I really didn't expect her to find another specimen of this rarity again, but apparently this matrix is a honey hole brought in by the truck load, making this site two honey holes in two epochs. Then on Wednesday I went by the same check dam from which this latest cidarid came and found what really appears to be a belemnite, but that is for another topic in the ID forum. Hopefully I can post that find soon. Since new Atco exposure at the site has temporarily slowed down I have an excuse to take a good hard look at the Edwards dams tomorrow afternoon. If we find anymore from the dams I will post it to this thread, so hope to see more In the mean time, here are the pictures of the echinoids, the check dam from which this latest specimen came, and a nifty Chondrodonta sp. she found in said dam. I welcome any other finds that anyone has found in the Edwards or its equivalents and any tips on how to prep limestone as hard as crystalized concrete. Also, sorry for the picture quality. My Nikon decided to die a few months ago for some reason and I have yet to get it fixed, so if anyone knows a camera repair shop that fixes Nikons in the DFW area, I am all ears. *Pictures incoming, computer acting up*

Need help identifying this fossil. Found in Pleistocene marl deposits near the city of Rhodes (capital city of the island of Rhodes in Greece). It measures 5 cm in diameter. Unfortunately the top whorls are missing and only the last two whorls are preserved.

These are from the Middle Pennsylvanian (Beeman) in southern New Mexico. 60mm seam of limestone embedded with gastropods. So deeply embedded and oriented as to make identification more challenging. Guess: Bellerophon * Surface is not smooth. * Appears to be symmetrical. * Ridge along the midline. Larger hash plate. Each of the larger gastropods is approximately 25mm. This plate is 220mm x 270mm at widest measurements. Smaller hash plate View of side of larger hash plate Ridge Aperture Another ridge It's my intent to prep on these two slabs while I hide from the heat during the hot months here in the desert. At least an approximate identification would be quite helpful so I have some idea of the shapes I will be trying to reveal.

I had a fun hike at the North Sulphur River Texas yesterday. I figured it would be picked over but I found a pretty remote spot with my 4x4. The one sawfish tooth I found in a small creek a few days before. Everything else is from yesterday. It was a great day for Cretaceous coprolite (Poo). @GeschWhat The one coprolite is full of fish verts, bones and fins.

Hi everyone, My last hunt of 2018 was incredible. And quite surprising too! For Xmas, we went to Middelburg in Zeeland to visit my mother's family, which is always a huge load of fun for me because I get to hang out with all my cousins, that I don't see very often. Anyways, one of the days, they all wanted to do a big walk on one of the beaches. At first they wanted to go to Dishoek, but I managed to convince them to go to the Banjaard instead. Once arrived, we split into 2 groups: one was my mother, my eldest cousin (18), my 2nd-youngest cousin (6), and I. All the rest went to the other group. The other group just walked, but our little group did something much more interesting... You guessed it: fossil hunting! As soon as we got onto the beach, we almost immediately found our first fish vertebra, but after that we seemed to have hit a small dry spell for nothing really worthy was being found. A few common fossil bivalves here and there, but nothing more. For my two cousins, it was their first time fossil hunting, and we had to give them a few examples to show them what to look for. I told them to focus on the fish vertebrae, because these were the easiest to recognize. The smaller one also did a lot of shell-hunting on her own, always picking up the most colorful ones and saying this one was Mama shell, this one Papa shell, this one Sister, etc until she made one giant family of orange shells Then after about an hour or two of hunting with rather little success, we finally hit these little shell banks on the beach. And there, BINGO! Gastropod after gastropod, we couldn't stop finding an incredible amount of them. On the Dutch shores, fossil (and modern too) gastropods are generally much less common than fossil bivalves. So the amount we found here was very surprising!

This gastropod was found in a block of matrix from Graf, Iowa that I split open last week. I have never bumped into this type of gastropod from there before. Research has left me stumped. Suggestions are welcomed! Elgin member, Lower Maquoketa formation, Ordovician. Thanks for the help Mike

Hi again Is this a (Jurassic) Gastropod? If yes, is it closer determinable? It was found near Herznach in Switzerland.

Hi folks, what do I have here? The label says ‘Turitella Essonne France 45 million years old’ I guess Essone is a typo and should be Essonne? Cube is 1cm3 @fifbrindacier @Coco @maxfossils

This Gastropod does not seem to be in Ellen Moore's book and there seems to be different opinions as to what it might be. Is there anyone who can tell me exactly what this is and show me a picture of the specimen they refer to? Miocene Astoria Formation Oregon

I found this gastropod imprint a couple weeks ago in Tertiary sediment (geologic maps) I found this gastropod online (Falsifusus ludovicianus) which lived during the same time period and has similar ridges and those tiny crown marking near the top. Let me know if this seems reasonable (I put the pictures of the gastropod I found online in the comments below.)

I found this "Gastropod" shell next to turritella shells and bivalve steinkerns. Do you think this is a gastropod? I know its too crummy of quality to be able to identify species. Let me know, thanks - John

A friend of mine who runs a rock shop acquired a large batch of fossils and other items, and asked if I could help ID them. I've been able to identify most of them, but there are a few I'm unsure about. At least one of them seems to be a non-fossil geologic item. Some of these were acquired without provenance details. I'm sure my friend would be content to have it down to the genus level, if possible.

Hi everybody. I made an exchange with someone who gave me that ammono-gastero fossil. The ammonite has 7 centimeters of circumference and the gasteropod 2,5 centimeters. All the information i have is that they must be from the Callovian stage, and i think they are from Britanny, in the North-West of France.

I cannot take anymore photos as this was not my photo but if anyone could identify these. They are around 15 - 20 million years old. Eocene period found in western washington

I came across this in the Puget Sound area (U.S. Pacific Northwest) along the water a few days ago. Wondering if anyone can shed some light on the specifics of what it is, and which era and period it might be from. Is this considered fossilized? It's fairly clean, but wondering what is the best way to clean it (toothbrush and warm soapy water?) Pardon my newbie knowledge on this-- just looking to learn. Thanks!