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  1. orockular

    PNW Estuary Concretion

    Dug this out of estuary mud (fully buried about 8ft out from high tide line) in NW Washington. I’m a newbie, been scouring galleries trying to get some ideas, may just be a fascinating mix of rock but the dark stripe portions strike me as bone or shell. Weighs about 3-4lbs.
  2. aquaticrooster

    Possible bryozoa colony?

    I found this heavy triangular piece of what appears to be a bryozoa colony ,but at different angles and lighting I find it to show several other possibilities. This was retrieved from a receding river bed amongst many more corals and lingulla plates I also gathered. If anyone has an input or correction to my guess ,I greatly appreciate it.
  3. Futurefossil

    Hoof print?

    I was doing some landscape work today and found these hoof like impressions in a few pieces of flagstone. I believe it to be sandstone. And I know for sure it’s from Oklahoma, U.S.A. Any thoughts?
  4. EphemeralMoose

    Fossil in reddish sandy stone

    I've been chipping away at this cobble when I have spare time, and slowly exposing this fossil. I found the stone itself in western Illinois, relatively near the rivers. The matrix is shockingly tough, I can only rarely make a difference with any sort of precision, unpowered hand tool. Each grain of sand is firmly in place and does not want to leave. The exposed matrix was originally reddish to brownish, though newly exposed faces of chips broken off lack the red-brown color (the reddish color is entirely lost in the photos). Presumably the stone is Mississippian or Devonian. Other fossils in this rock are all flakey white brachiopod material ranging from 0.5 cm to 4 cm across at the widest points. I have tested some matrix scraps against vinegar, which dissolved the stone around the sand grains, but left the sand grains untouched. I've decided to hold off on any more matrix removal until I know what I should expect to find in the matrix. I found a second one of these, but it chipped off and lost it in my prep area outside. When it comes to the horses & zebras adage I always put more consideration into the zebras than I should, which is why I'm hoping this is some part of a vertebrate but more likely an oddly colored crinoid bit. We just don't have much vertebrate material where I'm at. The photos with circular borders are taken through a stereoscope at 15x magnification. The others have some level of digital zoom applied, but have a scale nearby (mm, cm). I apologize for any focus issues, this new phone has a finicky camera.
  5. Raysun

    Possible footprint?

    Found in Luna County New Mexico. Looking for an identification, hoping it's a footprint.
  6. Gaila

    Dec. 20, 23 Fossil Find

    So this is my newest find on property I have been working since May 2023. I am at this property several hours, several days per week. I believe this is a sandstone possibly mixed with green clay that is found on the property. You can see the indentations on the rock. * Rock ID app has agreed that this is a fossil.
  7. KYDUX

    KY coral

    I found this coral in central Kentucky. Many are mostly free of any matrix. I am planing to put them in small glass display boxes to give as holiday gifts. Should I leave them as-is? Or can I brighten them up somehow, without taking away their character? They have all been found in an old rail road cut. The matrix around the other fossils appears to be mostly sandstone, with some in limestone. I took a few pictures of the loose coral and some still in matrix. All have been found within ~75 yard radius. I haven’t prepared them in anyway, other than sitting in the rain. My plan is to go over them with a toothbrush, then warm soapy water with a brushing. Thanks in advance for any suggestions, thoughts or opinions.
  8. Fossil or accretion? Hiking in New River Gorge National Park, Castle rock trail. Saw this on one of the walls of what I believe to be sandstone. Pretty sure this is an imprint fossil of maybe a seed fern trunk. This maybe the first fossil, if it is a fossil, I've ever identified without some guidance, or knowing I was in a fossil rich environment.
  9. OregonFossil

    Possible specimen?

    With the only diatom green formation about 4 hours away, I decided to see what I can find the somewhat lose matrix sandstone of the Pittsberg Bluff Formation. The attached image was taken at 100X and captured in a 5 mpx camera. Processed in PS. I've drawn a pentagram around the object of interest at bottom center of image (also the oblect to the right of it looks interesting - maybe?). Is this just a waste of time, or can one find micro fossils in sandstones? thanks.
  10. Recently found this rock on a trip to the Keasey formation near Mist Oregon. There are several crinoid stars visible on the outside of the stone and some segmented sections visible as well. Seems like they run throughout the rock. I found this on the ground by the stream and water erosion did a bit of work on the outside. Really curious and excited about what might be inside but no idea how to start and scared to ruin it. Any advice would be very much appreciated. Thanks.
  11. Konodioda

    strange stem of fossil

    I found this stem or branch of a fossil found it in Rockford il on a dried river, do you have any ideas on what it could be?
  12. Most people are familiar with the Conasauga Formation when they think of Georgia's Cambrian record, but the Peach State has a paleontological history dating back several million years before the Conasauga was deposited. Indeed, the oldest fossils in Georgia date back to the early Cambrian, and consist of a diverse form of worms, brachiopods, trilobites, and other creatures such as hyoliths and archaeocyathids. This early Cambrian record is largely divided into three formations, from oldest to youngest the Weisner Formation (part of the Chilhowee Group), the Shady Dolomite, and the Rome Formation. All of these formations, as well as the overlying middle Cambrian rocks of the Conasauga Formation, are well exposed in the Rome and Cartersville areas. Cartersville is a mid-sized town in North Georgia with a rich interconnection between history and geology. Situated near the confluence of three major geological provinces (the Valley and Ridge, the Blue Ridge, and the Piedmont), the Cartersville area was uniquely positioned for the discovery and future development of a variety of mineral resources. Wide scale mining began in the mid-19th century with the establishment of the Etowah Iron Works along the Etowah River. Although the bulk of the works were destroyed by Union forces during the Civil War, mining not only continued in and around Cartersville but actually expanded in the post-war period. Iron was the principal product for a while owing to the region's rich limonite deposits, but by the turn of the century ochre and barite production also became prominent, if not more so. Mining operations peaked by the middle of the 20th century, but some active mines remain in the area, and they continue to be a favorite with mineral and fossil collectors. Thankfully, this past history of mining, combined with the recent construction due to Atlanta's explosive growth, has exposed rocks typically left buried under the thick clay and vegetation of North Georgia. The Shady Dolomite was, and still is, the focus of the brunt of the ochre mining around Cartersville. A carbonate unit, the Shady is easily weathered in North Georgia's humid and rainy climate, dissolving much of the rock and underlaying the ground in a thick, reddish clay. Due to the nature of the weathering, however, distinct beds can sometimes be seen in cuts made into the Shady, as shown in the above photo from a construction site in Cartersville. Another exposure of the red clay residuum made out of weathered material from the Shady Dolomite. Although the carbonates of the Shady are frequently weathered into a thick, red muck, this weathering process typically uncovers a wide variety of rock types that are more resistant to chemical attack, and which would have otherwise been locked into the dolomite. At exposures like the one above, pieces of shale, iron oxides, and chert are common. Alongside the chert are fossils from some of the oldest reef communities in Georgia. This small piece of rock contains fragments of archaeocyathids, ancient sponge-like organisms that once established reefs in the early Cambrian sea. Alongside archaeocyathids, other fossils like trilobites and brachiopods are sometimes found in the Shady, but I didn't find any personally. Aside from iron and ochre, Cartersville was an important center for barite mining around the turn of the century. Most barite mines were located east of town, near the contact between the Valley and Ridge and the Blue Ridge provinces. Although most have been filled in or flooded, one pit that is still left can be seen at Pine Mountain east of town. A few pieces of barite ore line the trail leading up the mountain. A small piece of barite ore from near Cartersville. The walls of a former mining operation near the base of Pine Mountain contrasted with an image of a similar mine when in operation. Leading up the trail at Pine Mountain, one travels across geologic provinces. The valley floor is underlain by rocks of the Shady Dolomite and Rome Formation, part of the Valley and Ridge province, while Pine Mountain itself lies within the Blue Ridge. Climbing up Pine Mountain, you begin to sense that change reflected in the rocks underneath you. The red clay and chert residuum of the Valley and Ridge gives way to brown and white dirt, and the chert and dolomite boulders give way for quartzose sandstones, quartzites, and schists. Along the trail, numerous pieces of quartz sandstone from the Weisner Formation are exposed, and in these boulders you can sometimes catch glimpses of the earliest recorded life in Georgia! The picture here shows a sandstone boulder with a couple of well-worn Skolithos linearis worm burrows. Whereas the Shady Dolomite was deposited in a shallow, tropical sea, the upper Chilhowee Group was deposited in a near-shore environment as indicated by the coarse sediment. That means that 530-550 million years ago, during the early Cambrian, what is now a mountain would have been a warm, sandy beach! And, although they may not seem like much, the humble tubes in the rock illustrate a time when life was not everywhere abundant, and the diverse lifeforms we find at beaches today had yet to appear. Climbing the rocky trail to the summit, one is well-rewarded with a view of the entire Cartersville area, including a view across much of the Piedmont to Kennesaw Mountain beyond, and across much of the Great Valley to the Armuchee Ridges. One can also get a sense of the legacy of intense mining that took place around Cartersville from the many red-colored pits scoured into the nearby hillsides, ghosts of operations past and present. On top of all of that, one can also visualize the impact geology has on the topography of an area. Being the intersection of so many geologic provinces, the Cartersville area is marked by numerous faults, folds, and other complex structural geology that has left pockets of one formation nearly surrounded by pockets of another. This has contributed to the hilly nature around Cartersville, as the comparatively resistant rocks of the Rome Formation and Chilhowee Group forms island-hills in the sea-valleys of the Shady Dolomite. The view from Pine Mountain. The red areas are current and past mines around Emerson, Georgia, just south of Cartersville (which includes the buildings in white). The hills here, which make up part of the Allatoona Mountains, are held up by resistant units like the Chilhowee and Rome while the valleys are underlain by softer carbonates like the Shady. On a clearer day you could make out the Armuchee Ridges lying at the western edge of the Great Valley, a synclinorium of Cambro-Ordovician rocks that stretches from here all of the way to Quebec. I hope you enjoyed the report!
  13. Found this cylindrical fossil with tiny holes on the outside and circular ring pattern on top. I thought it was a coral but the circular lines don’t match. Any help to identify it would be appreciated.
  14. BuchaBabe

    What kind of marine animal is this?

    Hello! I found this amazing fossil on my mom’s property in Pueblo, Colorado. I’ve tried to do some extensive research online to see what type of vertebrae animal/marine life this is. Could you please help identify? thank you so much!
  15. Shadowy

    Possible microorganism formation

    I found these two rocks in BLM land around the Ding and Dang slot canyons, which are close to Goblin Valley state park in Utah. I believe that they are both some sort of fossilized bacterial colony, but I'm not sure. The two possible fossils are made of different types of sandstone, as seen in the deferent shade of color. The larger one: The smaller one: Additionally, the smaller one has a barely visible mineral layer (gypsum?) running through it, seen below. Could anyone please help me identify these two possible fossils?
  16. JDW

    Trace Fossil?

    Hello all, I am an amateur scientist from Southwestern Indiana and came across this interesting sandstone boulder while hiking an old surface mine area near me. I first thought it was man made but it has too many layers and definitely sandstone. Any one know more about this type of pattern? Thanks for any help.
  17. treebarkjerry

    Colorado Dakota sandstone cast?

    Found this in San Miguel county, western Colorado. USGS layer says it's Dakota Sandstone and Burro Canyon formation out there. This stood out because it wasn't just a flat blocky rock. I thought it looked like it came out of one of those playdoh things where you squished the stuff through and got a star shaped rope or a bunch of spaghetti. But it's all sandstone and when I cleaned it up I see it's got some kind of mineralization on it. Whatever it is it's resting on a slightly different type of sandstone that I tried to show in the 2nd photo. Limb cast sandstone wood rreplacement?
  18. My job has taken me to a small town in Gloucestershire, I have noticed all the old buildings in the surrounding area are made from fossil packed sandstone! Hard for me to comprehend the amount of fossils in all these building, would love to find out where the quarry is (or was).
  19. Hello I found this and some other clusters and other fossils in another area. I tried to find one like it but all this other snarge comes up and with out a reg computer it's really faustrating, This cheap phone that red cross gave me after the fire really doesn't take good pic The other items are I believe is sandstone but this person's here says they look like concrete. Thanks I hope the pic are fine
  20. In Pennsylvania USA, in the Old Port Formation, some trilobites are exposed in the scree and talus below coarse sandstone horizons. They tend to be very fragile (image below). My question is..... what's the best way to open large hunks of this rock, hoping for intact fossils within? I'm thinking about trying freeze thaw, but opted to check in here for alternatives or helpful tips. Anyone? Thanks!
  21. I'm not joking about this but these these I thought were like regular fossils I picked them up and they like they didn't feel right I had gloves on rubber gloves you know the ones workman's gloves and if I put them in a different bag and when I got home I picked them up and I put them in water the vinegar and stuff and they got like really slimy and I just put them on the side and I got him in the steel Tupperware container and another tupperware container with muriatic acid and the other one you know so in case they do get out whatever I don't know I know it sounds funny but it is what it is the I don't know if they are mummified the worms or whatever they are but they're not fossilized and they're not like petrified and if you put water on them they'll get soft I don't know if they're like alive after millions of years I doubt it but there is a blade of grass growing out of one of the clumps of mud which is weird I was thinking about putting some water on it you know to see what grows it could be a grass seed from some you know like from when they dug them up but it's in I mean I don't understand how it could have got in that watch cluster formation because I because it broke open when they dumped it so I mean it'd be cool to see what kind of plant it would grow. The other photos are of the other mud dirt items that were in the pocket of the cluster which was probably about 6 ft aacro
  22. Hi there! I am brand new to the forum, but have been a fossil lover all my life. I am hoping to learn the best way to preserve sandstone leaf fossils. I've been finding them since I was a kid and my mother use to coat they in polyurethane, I believe. I'm just not convinced this is the best practice. I imagine the chemicals would deteriorate the stone overtime? Anyways, I would appreciate any and all advice. Thanks in advance! Dea
  23. Central AL Pottsville Formation What are these round, flat cookie shaped things? Stromatoporoids? Mineral concretions? Thanks for looking!
  24. I which one of the six large ones here that I posted pictures of you think will come out the best I like the boot shaped one or the v-shaped one.
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