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Found 326 results

  1. ID help please. Galway, Ireland

    Hi Guys, Found this chunk of limestone containing some interesting features (pics 1-7 of 8)while walking a beach today in the west of Ireland, there seemed to be a few more rocks similar to it scattered around the area. I have very little knowledge of fossils and would really appreciate if someone could help me identify the fossils present. The image 8 is a separate fossil picked up in a drumlin, I was thinking that it looks a bit like some sort of shell, but again would appreciate an id if possible. Thanks, H
  2. Id:okinawan fossils in limestone

    Hi guys, I'm new to the forum .I found three okinawan fossils in limestone.Can anyone help me Id them?
  3. Bryozoan Fossil?

    Hello all, I'm working on a project for my Geo 200 class and I am having some trouble identifying the fossils on a rock I was given (pictured with the white bar representing 2 cm). I believe it's Bryozoan but if you have a better explanation please share. Thanks!
  4. Wrens Nest slab

    From the album Multi-slabs

    Don't know what this is yet. Slab from Wrens Nest, Dudley, The Midlands, U.K. Silurian Wenlock limestone formation.
  5. Smashed crinoid calyx?

    Hi esteemed forum members, I have several finds I need help identifying, but I'm going to do them in separate posts/threads/topics/whatever. I found this one in some Burlington Limestone in central Missouri. It's super brittle. You can see areas where pieces have just flaked off. The lines you see going across the front of it are raised. The leading theory on this so far is that it's a Rhodocrinites calyx that flattened during diagenesis. I've also attached an image of the small matrix it came off of (I found the calyx, if that's what it is, in situ unattached, just laying there on top of the matrix). Let me know. And stay tuned for other, and probably less exciting, ID requests. Thanks!
  6. I found this fossil in Southern Germany on a mountain range called the Schwaebische Alb. It was found in a former marine envornmnet with bivalves, belemnites, etc It is relatively large, the rock is limestone, and I do not know what it is. Does anybody know? (I attached both pictures)
  7. Silurian Limestone Help

    I walked some old abandoned rail tracks today after work, near Lake Michigan. Now I'm assuming they trucked in local limestone to use for these tracks, which would be Silurian. But I also have learned assumptions have no room in science. Haha! That being said, I can't confirm a time period for these finds. Limestone is a tricky thing when it comes to fossils. Sometimes it preserves the finest of details, and sometimes it's a worn blob. I found some cool stuff. Nothing great. But it was a very relaxing and easy hunt! And sometimes those are the best kinds of hunts! Corals Cephalopods Mystery item #1. I'm thinking an impression from the side of a Crinoid Cup. What do you guys see? Mystery item #2. I'm also thinking Crinoid Cup, but an impression of the bottom. Thoughts? Mystery item #3. This I haven't a clue. At first I thought some strange Brachiopod, but it's so round. Hopefully the pictures convey it's strange shape and characteristics. As always, I appreciate any and all help. Thanks for looking.
  8. Hi all, Here is goes, finally I found a place "alive" enough to talk about fossils. Most other places I saw were just as alive as the fossils they were supposed to talk about. Sohere I went on a trip onto an island in Lake Winnipeg in Manitoba, Canada. The ground is shale or limestone. Just walking on the "beach" I came across a bunch of fossils or imprints of fossils. Now I tried to find out how old that particular spot was and came up with Ordovician. Here are the images of what I saw: 1: 2: This one looks like a fish, but I doubt is a fish would leave such a lasting imprint 3: This one has my size 12 shoe in it for measure, but I saw the same type of imprint that was at least 5 to 6 feet long. 4: Can anyone point me in the right direction or even identify these fossils for me? Thanks, Henk
  9. Ichnofossil from Mimico Creek

    From the album Urban Fossils of Toronto (Georgian Bay Formation, Lower Member)

    Various ichnofossils made by the fauna of the Georgian Bay Formation. Found at Mimico Creek, late Ordovician.

    © (©)

  10. I recently moved to Ocala, Florida and I've been enjoying fossil hunting right in my neighborhood. I've learned a lot by reading these forums, and studying up on Florida's geologic history. This one has me stumped. There are well- defined layers and concentric circles at two corner of this rock. Any ideas ? Some parts of it are brittle, crumbly limestone. But some parts are quite hard and seem to have chert inclusions. ( I've seen a bunch of that around here. Beautiful ! )
  11. My First Fossil

    From the album Mine

    Crinoidea, limestone, found in Arizona
  12. Just A Weekend Time Passer

    I went to a couple Jurassic age, limestone outcroppings because of a rumor of abundant fossils. Sure enough, many fossils, mostly Pentacrinus, were lying around waiting to be collected. Here they are...
  13. A week ago, on Thursday, I set some chunks of limestone in a vinegar bath to extract microfossils. Since my vinegar supply was low, I only filled the tubs halfway, and I left the lids off. My plan at the time was to return in a couple of days to filter the liquid, but life intervened, and by the time I could do something else with them, they were growing some rather pretty crystals! I decided to leave them alone and see what developed. Here's what they look like today: I think this one looks like caulifower: And this like a leafless forest: Unfortunately, the "cauliflower" fell off the rock after I took the picture, and some of the "trees" are falling down (which is why I decided to photo it today!), so it's probably time to decide whether to continue processing or try to preserve them as they are. I don't know whether these crystals will persist in the absence of a calcium carbonate-enriched solution or not. Just thought I'd share my unplanned chemistry experiment!
  14. I am always trying to find a relaxing vacation destination with fossils attached. The usual philosophy about the Hawaiian Islands is that they have no fossils because of their recent volcanic origins. Well surprise! The island of Kauai (the oldest Hawaiian island) has Holocene fossils in the south of the island. In May we visited Kauai and I visited the Makaheni lithified cliffs. The fossils being Holocene are really recent but the location is so spectacular that the geology would stun any fossil lover. This is a location you could take the non-fossil hunters in the family and they would like it too. Besides, hey, it’s Kauai! Makaheni is a lithified calcareous dune deposit that includes limestone sea cliff caves a sinkhole, and fossils. To quote the literature, “The lithified sand dunes that form Makawehi (also known as the Paa Ridge) accumulated as sand dunes during the last “high stand” of the sea, about 125,000 years ago. As sea levels lowered at the peak of the Ice Age (about 18,000 years ago), reaching its lowest point of around 360–400 feet below the present sea level, the dunes occupied a more inland position. From there, volcanic ash deposited onto the dunes and a coastal forest began to flourish. Rain percolated through the sand which partially dissolved some of the skeletal and coral grain sands. Calcite crystals grew around the sand grains and within the pore space between the grains, locking together to produce the cement that changed the carbonate sand into carbonate sandstone, also known as limestone. As the Ice Age ended glaciers melted, resulting in a rise in sea level. Waves eroded much of the dune and formed what is now Keoneloa Bay. Makawehi point is being undercut by continual wave erosion. The huge blocks of limestone that lie at the base of these cliffs are examples of that erosion. Caution: Stay well back from the edge.” The obvious fossils are coral, gastropods, and wood. Many more are found in the caves and are well documented in this publication- “FOSSIL EVIDENCE FOR A DIVERSE BIOTA FROM KAUA‘I AND ITS TRANSFORMATION SINCE HUMAN ARRIVAL DAVID A. BURNEY,et al 2001” If anyone has resources to help me id these fossils please let me know, as I can’t find much in the online literature. One piece of advice I would give to any visitors to Kauai – don’t go in the off season as it was 89 degrees with 95% humidity. The 89 degrees was OK but the humidity makes it feel so hot it’s hard to focus. I sweated from places I didn’t even know I had! Also they request that you do not take fossils from the cliff. I scavenged where the base of the cliff touches the tideline because the sea was going to turn them into sand very soon anyhow. I actually brought very few home with me but took lots of pictures. Great fossil and geo fun trip!
  15. Hi all I am a new member, so excuse me if I break any guidelines or somehow make an idiot of myself with this post. I've only signed up after finding a few fossils earlier today. I found this, amongst other fossils, while hiking in Big Bend National Park in Texas. This area is well known for Cretaceous era fossils of shellfish in limestone deposits, it used to be a shallow sea, and you can see hundreds of fossils in canyon walls. This is one of the most interesting ones I saw, and I was hoping to found out a bit more about it. Unfortunately all I had with me at the time was my ipad, so I hope the photo quality is good enough. I didn't think at the time to take more. Also you are not allowed to remove fossils from the park, so I had to leave it. I found this while hiking the Hot Springs Trail, and it was found just lying in the path. I'm hoping there are some people out there that know Big Bend and could maybe help provide more accurate geological information. The trail runs alongside the Rio Grande River, running up high along the cliffs through the limestone shale (I think that is what it is) The whole trail is full of shellfish fossils, and I have heard of people finding ammonites in this area too. I did find more fossils that I would like to post up some time, but I figured I'd not spam the forum with all my ignorance in one go. I am still a novice in this area and have a lot to learn, but that is why I am here, I am just starting to study paleoanthropology (I've been wasting my life studying photography for the last four years) and I'm a volunteer docent at the Hall of Human Origins at Museum of Natural History in Washington DC, so I am possibly I am a bit more familiar with fossils than most, but i still have a lot to learn. So any contribution is appreciated. Cheers Ian
  16. I got in a nice sunset hunt last night. Heavy rain has washed a little of my hilltop spot away and I found some good stuff... A beautiful scallorn point, some 19th century glass, some shells, and a few unidentified things that caught my eye. They all either just looked out of place or appeared to have some form. Some might just be weathered rock. These were all found in Burnet County, Texas on the Eastern Edwards Plateau. I found a snapped stalactite base in this same formation so there might have been a cavern at some point at this spot. Thanks for looking.
  17. Tiny Fossils

    Tiny little fossils with itty bitty raised dots?
  18. Big Tooth From Az

    Hello, can anyone help ID this tooth? It has a limestone matrix and was found in the desert in Southern Arizona. Any thoughts on it would be appreciated.
  19. Educate Me On Dolostone And Limestone

    So I need help identifying Limestone and Dolostone from each other. I would like to be able to properly id, describe, catalog, etc finds. This also would help me date my finds. From what I know from Wikipedia is basically dolostone, is limestone, that dolomite replaced the magnesium in limestone. Obviously limestone contains high calcium carbonate. Dolostone can come in brown, pink, and white colors. Also I have seen pictures of grey colors as well. This is confusing as what I know as limestone comes in white and grey. Dolomite also crystallizes? Would this make it appear to be more grainy like sandstone? Can somenone break this down to me? Basically articles on the internet just tell me over and over dolostone contains dolomite! Arghh! Lol. Feels like I am banging my head againt a wall! Thanks for your help!!!
  20. Need Help With Fossil Id

    I found this fossil at a yard sale, I have no info about it's history! Can anyone help me ID what it is. Your time and help is very much appreciated, David
  21. One Kilo Stone 'egg'?

    Hello everybody, Sorry for not posting first in the introductory section! I live in Romania and I'm not quite involved into fossils, if I may say so, but as a teenager I had some interest in this field - which I must admit it's more than fascinating. Later I got onto other paths but whenever I go to the great outdoors I keep an eye out for any interesting geological things like curious rocks and pebbles etc. Last summer I went in a short trip to a certain hilly area north of my hometown. As it was a new place for me I went exploring around. Bordering a river there was an eroded hillside with some limestone slabs and pieces fallen downhill. I can never resist scouting such areas with debris so I took a close look and noticed that while all the stones were more or less 'square' in shape there was also an ovoidal shape that caught my attention. I picked it up and when I realized it's something of a more special nature I put it back on a stone near it's original spot and took a picture (please see ''Stone egg findspot'' picture - the thinner red arrow marks the ''egg'' placed on a stone and the bigger arrow marks it's original position - which is actually secondary as it fell from the hillside limestone rocks). This stone ''egg'' looks like an ovoidal piece of limestone-based rock with a wider base and a narrower top, height almost 10 cm, maximum diameter ~8 cm, weight 1.006 kg (on my kitchen scale). Some orange iron oxide is visible on its surface. I made some close-up pics, sorry for the low quality. What I find interesting is that the domed top doesn't have an egg-like, relatively circular curving, but at some point it gets some angle. Also towards the base of the egg there are two big and one small areas of flatness, like at some point the object was soft and deformed as it was pressed by other objects nearby (see the close-ups). I can't tell if there is any special surface texture, I can't see, I guess, anything like pores or such but I am not trained in this field. Please help me with your opinion: could this be a fossil or is simply some kind of geological concretion looking like an egg?! Thank you in advance!
  22. Annelid Fossil?

    Hiya, had this fossil for a few months now and i've been wondering what it is. My geology teacher seems to think it is an annelid worm but i'd like to know a little bit more. Thanks. Date: 27th November 2012 Location: Whitesands Beach, Pembrokeshire. Rock Type: Limestone Rock Age: Cambrian (I think) Dimensions: 4.8cm x 0.5cm #1 #2 #3
  23. An Artifossil

    several recent posts regarding artifacts & their identificaton prompted me to dig this specimen out of moth balls: it's both artifact & fossil; the tip section of a chipped stone spear or knifepoint, with a little surprise. The planispiral coiled gastropod preserved in the marine chert or flint probably contributed to it's fracture. It would have been a great artifact had it been complete;only now it's been relegated to "conversation piece". Hope you find it interesting.
  24. I have never really done any real fossil hunting, but both my husband and I are always interested in the geology and landforms we encounter wherever we go. My husband and I were visiting my parent's home in Grove, Oklahoma, which is about an hour SW of Joplin, MO. They've been working on moving out all the large rocks that naturally litter the lawn and pastureland since they've moved there, so there are multiple random piles of rocks all over the property. I happened to notice some "sparkly" rocks sitting in a wheelbarrow that I thought were pretty, so my husband came over to take a look. Looking at the rocks a little closer we started to notice that they were littered with little inclusions and geometric impressions. My husband emailed some pictures of our initial find to the Sam Noble Museum of Natural History. Here is the reply we received: "What you have is a piece of cherty limestone that contains individual crinoids stem fragments (the round objects that look like compressed coral), bryozoans (the small fans are fronds of a fenestrate bryozoans and some of the branch-like objects are also bryozoans), and it looks like the mold of small clams (bivalves). Based on the rock type and preservation, I would guess these originally came from NE Oklahoma in the Ozark Mountain region and are probably Mississippian (Early Carboniferous) in age (~330 to 345 million years old). Some of the things you describe as worms may indeed be worm tubes or traces where small invertebrates burrowed though the soft mud feeding on even smaller invertebrates, the mud was then buried and lithified into a limestone, then later events introduced silica into the rock turning it into a chert or cherty limestone. The orange-red color is from iron oxide (literally rust) that is common in these rocks." We found these rocks everywhere, and we brought a number of them home to inspect and maybe try to extract. So I have an idea of what they are, but my question is, what do I do now? It looks like there might be a few actual intact fossils but for the most part it looks like they are just external mold fossils (been trying to do as much reading as I can..). So I have a few specific questions. 1) Is it worthwhile to try and extract any whole fossils? If we extract the fossils, I can assume the mold fossils will be lost/ruined.. 2) Is it possible that there are only mold fossils present? 3) What about the presence of microfossils? 4) If extraction is a possibility, what would be the process for this kind of stone/mineral? 5) Are there any other techniques that are a good presentation of this type of fossil (cross-sections, slices, polishing...)? I am pretty excited, so I have been trying to look up as much as I can about our find. I know no one likes a newbie that doesn't do their research, but there is a lot of information out there! Hopefully someone out there will be able to give me some tips on what we can do with our new "rocks". I am attaching some pics of what we have. I forgot to add a coin in for reference until I was almost done taking pictures, so sorry about that. With the exception of some of the bivalve molds/shells, most everything you see in the limestone is only a few mm to about a cm big. Thanks in advance!