Jump to content

Search the Community

Showing results for tags 'limestone'.

More search options

  • Search By Tags

    Type tags separated by commas.
    Tags should be keywords or key phrases. e.g. carcharodon, pliocene, cypresshead formation, florida.
  • Search By Author

Content Type


  • Fossil Discussion
    • General Fossil Discussion
    • Fossil Hunting Trips
    • Fossil ID
    • Is It Real? How to Recognize Fossil Fabrications
    • Partners in Paleontology - Member Contributions to Science
    • Questions & Answers
    • Fossil of the Month
    • Member Collections
    • A Trip to the Museum
    • Paleo Re-creations
    • Collecting Gear
    • Fossil Preparation
    • Member Fossil Trades Bulletin Board
    • Member-to-Member Fossil Sales
    • Fossil News
  • Gallery
  • Fossil Sites
    • Africa
    • Asia
    • Australia - New Zealand
    • Canada
    • Europe
    • Middle East
    • South America
    • United States
  • Fossil Media
    • Members Websites
    • Fossils On The Web
    • Fossil Photography
    • Fossil Literature
    • Documents


  • Anson's Blog
  • Mudding Around
  • Nicholas' Blog
  • dinosaur50's Blog
  • Traviscounty's Blog
  • Seldom's Blog
  • tracer's tidbits
  • Sacredsin's Blog
  • fossilfacetheprospector's Blog
  • jax world
  • echinoman's Blog
  • Ammonoidea
  • Traviscounty's Blog
  • brsr0131's Blog
  • brsr0131's Blog
  • Adventures with a Paddle
  • Caveat emptor
  • -------
  • Fig Rocks' Blog
  • placoderms
  • mosasaurs
  • ozzyrules244's Blog
  • Sir Knightia's Blog
  • Terry Dactyll's Blog
  • shakinchevy2008's Blog
  • MaHa's Blog
  • Stratio's Blog
  • Phoenixflood's Blog
  • Brett Breakin' Rocks' Blog
  • Seattleguy's Blog
  • jkfoam's Blog
  • Erwan's Blog
  • Erwan's Blog
  • Lindsey's Blog
  • marksfossils' Blog
  • ibanda89's Blog
  • Liberty's Blog
  • Liberty's Blog
  • Back of Beyond
  • St. Johns River Shark Teeth/Florida
  • Ameenah's Blog
  • gordon's Blog
  • West4me's Blog
  • West4me's Blog
  • Pennsylvania Perspectives
  • michigantim's Blog
  • michigantim's Blog
  • lauraharp's Blog
  • lauraharp's Blog
  • micropterus101's Blog
  • micropterus101's Blog
  • GPeach129's Blog
  • nicciann's Blog
  • Olenellus' Blog
  • nicciann's Blog
  • maybe a nest fossil?
  • Deep-Thinker's Blog
  • Deep-Thinker's Blog
  • bear-dog's Blog
  • javidal's Blog
  • Digging America
  • John Sun's Blog
  • John Sun's Blog
  • Ravsiden's Blog
  • Jurassic park
  • The Hunt for Fossils
  • The Fury's Grand Blog
  • julie's ??
  • Hunt'n 'odonts!
  • falcondob's Blog
  • Monkeyfuss' Blog
  • cyndy's Blog
  • pattyf's Blog
  • pattyf's Blog
  • chrisf's Blog
  • chrisf's Blog
  • nola's Blog
  • mercyrcfans88's Blog
  • Emily's PRI Adventure
  • trilobite guy's Blog
  • xenacanthus' Blog
  • barnes' Blog
  • myfossiltrips.blogspot.com
  • HeritageFossils' Blog
  • Fossilefinder's Blog
  • Fossilefinder's Blog
  • Emily's MotE Adventure
  • farfarawy's Blog
  • Microfossil Mania!
  • A Novice Geologist
  • Southern Comfort
  • Eli's Blog
  • andreas' Blog
  • Recent Collecting Trips
  • retired blog
  • Stocksdale's Blog
  • andreas' Blog test
  • fossilman7's Blog
  • Books I have enjoyed
  • Piranha Blog
  • xonenine's blog
  • xonenine's Blog
  • Fossil collecting and SAFETY
  • Detrius
  • pangeaman's Blog
  • pangeaman's Blog
  • pangeaman's Blog
  • Jocky's Blog
  • Jocky's Blog
  • Kehbe's Kwips
  • RomanK's Blog
  • Prehistoric Planet Trilogy
  • mikeymig's Blog
  • Western NY Explorer's Blog
  • Regg Cato's Blog
  • VisionXray23's Blog
  • Carcharodontosaurus' Blog
  • What is the largest dragonfly fossil? What are the top contenders?
  • Hihimanu Hale
  • Test Blog
  • jsnrice's blog
  • Lise MacFadden's Poetry Blog
  • BluffCountryFossils Adventure Blog
  • meadow's Blog
  • Makeing The Unlikley Happen
  • KansasFossilHunter's Blog
  • DarrenElliot's Blog
  • jesus' Blog
  • A Mesozoic Mosaic
  • Dinosaur comic
  • Zookeeperfossils
  • Cameronballislife31's Blog
  • My Blog
  • TomKoss' Blog
  • A guide to calcanea and astragali
  • Group Blog Test
  • Paleo Rantings of a Blockhead
  • Dead Dino is Art
  • The Amber Blog
  • TyrannosaurusRex's Facts
  • PaleoWilliam's Blog
  • The Paleo-Tourist
  • The Community Post
  • Lyndon D Agate Johnson's Blog
  • BRobinson7's Blog
  • Eastern NC Trip Reports
  • Toofuntahh's Blog
  • Pterodactyl's Blog
  • A Beginner's Foray into Fossiling
  • Micropaleontology blog
  • Pondering on Dinosaurs
  • Fossil Preparation Blog
  • On Dinosaurs and Media
  • cheney416's fossil story
  • jpc
  • Red-Headed Red-Neck Rock-Hound w/ My Trusty HellHound Cerberus
  • Red Headed
  • Paleo-Profiles
  • Walt's Blog
  • Between A Rock And A Hard Place
  • Rudist digging at "Point 25", St. Bartholomä, Styria, Austria (Campanian, Gosau-group)
  • Prognathodon saturator 101


  • Calendar


  • Annelids
  • Arthropods
    • Crustaceans
    • Insects
    • Trilobites
    • Other Arthropods
  • Brachiopods
  • Cnidarians (Corals, Jellyfish, Conulariids )
    • Corals
    • Jellyfish, Conulariids, etc.
  • Echinoderms
    • Crinoids & Blastoids
    • Echinoids
    • Other Echinoderms
    • Starfish and Brittlestars
  • Forams
  • Graptolites
  • Molluscs
    • Bivalves
    • Cephalopods (Ammonites, Belemnites, Nautiloids)
    • Gastropods
    • Other Molluscs
  • Sponges
  • Bryozoans
  • Other Invertebrates
  • Ichnofossils
  • Plants
  • Chordata
    • Amphibians & Reptiles
    • Birds
    • Dinosaurs
    • Fishes
    • Mammals
    • Sharks & Rays
    • Other Chordates
  • *Pseudofossils ( Inorganic objects , markings, or impressions that resemble fossils.)

Found 315 results

  1. This was found in a rock quarry just outside Austin. I took the picture before I joined this forum so I didn't place a ruler next to it. It is on a Limestone rock, 15" long, 7" high and about 8" thick. I can see from the edge of the rock there is probably another layer of matter inside the rock. Thanks for looking at it and any help you can provide.
  2. Does anyone know what this might be? The surface of the rock is flat.
  3. Need Help Identifying Fossil

    Currently located in Fleming co. Kentucky. This area is known for its large limestone deposits and is very fossil-rich. I found this piece while walking along a small creek. I have been searching this creek for roughly 4 months and have found large quantities of Horn, stem/branch and brain coral with scattered amounts of cephalopods. This is the first time I have come across a piece like this in this creek and needed help identifying it as my other resources have turned up empty. The whole rock is 10cm/4 but the fossil is 5cm /2.25 inches. Any thoughts, comments, and ideas would be much appreciated.
  4. I have so many rocks that I often like to take one and remove as much matrix as I can, to learn more about it. This rock was very interesting! The limestone was very soft and I know for a fact that I removed plenty of small fossils along the way, but I thought I was digging a geode out of the rock (the "original" thing was the dark area). After cleaning thoroughly with vinegar and a toothbrush, I started removing all soft matrix with a dental pick. I was surprised to "break through" to a totally different geode than the one I thought I was digging out! Part of this new geode broke off later, but I was able to see the inside well! :-) I also discovered what seems to be a nice bryozoan fossil? I never did figure out what the original item was - it may still be a geode, but I have stopped for now. I may have seen this before, but just though it was interesting to see the geode and fossil in the same rock. Found in Huntsville, Alabama.
  5. Need help identifying these fossils

    Fossil hunting in Long Creek Hood County Texas, found these (all the same shape) fossils. Are they a pelecypod, oyster, gryphaea? Any suggestions appreciated! It almost looks like a weathered bi-valve. See the last pic I posted.
  6. Arizona Miocene lake bed fossils

    I found these in Miocene lake bed limestone in central Arizona. Palm, reeds and stromatolites have been found in same layer nearby. I see no radial laminations that may indicate that these are algal growths. What are these round cap like structures? @paleoflor All the ones that I have found are round and 3 to 4 cm across. They are all shaped like spheres with the bottom 55 to 60% “missing”. The first three photos are from the top, side and bottom views. The fourth photo is of one still in the rock. The slight gap around the sphere appears to be an empty mold of the mystery object. The last photo is my drawing of what most of the fossils look like. I have an idea of what they might be. Let’s get some other opinions before I give you mine. 1 top view 2 semi side view 3 bottom view 4 in situ 5 idealized diagram
  7. rock consolidation?

    Hello everybody! I have a fossil in a matrix and I want to keep and not to clean free. Does anybody know what to spray on a limestone matrix to consolidate it? Thanks!
  8. Here I am again, with questions on another rock! I can recognize more and more fossils and rocks, but I love finding things I don't recognize. :-) This limestone rock, found in Huntsville, AL, as a portion that has a lot of quartz in it, and a lot of tunnels and crevices. I recognize the crinoid fossils but am not sure about some of the other ones. I have put questions marks on the areas I am wondering about, and asked a question in one image. It also almost looks like there are areas where geods were trying to form, but that may just be due to all of the quartz. Help appreciated! Thanks! Ramona
  9. Dorset fossil hunting trip

    So recently I took a trip to the Jurassic coast in the nearby county of Dorset and I decided to share it with you and record it which I haven’t done before. The location I chose was Bathonian, Jurassic and was the Forest Marble formation. I’m sorry if my fossils seem a bit crude because I haven’t cleaned all the rock off them yet. Most of the fossils in this location are found by either processing the rock or looking on the big limestone boulders which are crammed full of brachiopods and bivalves. As I said, there are plenty of shells but the eventual vertebrate remains do turn up. Particularly sharks, fish, reptiles, amphibians and I know that this location is famous for its mammal remains. Here is a picture looking towards Eype and Thorncombe Beacon and I think that’s Seatown, Charmouth and Lyme in the distance .
  10. My grandparents own land on the Devil’s River in west Texas and I’ve been hunting fossils with them there since I was six years old. When I was younger I thought that these might be fossilized dinosaur bones, but I doubt that now. My grandparents think that they’re plants but I also doubt that. I’ve been thinking maybe they’re some sort of tube worm, or a coral, but I have a feeling that they’re something I don’t know of at all. So, I figured it would be good to ask here with hope that someone will know more than we do. I read this morning that the devil’s river limestone is Cretaceous. The fossil in the bottom left of this picture is a nice cross section of what I’m interested in. The distinct segments or chambers remind me of the structure of an ammonite or a nautilus, which made me wonder if they could be a shelled cephalopod. They seem to be hollow (at least some of them): I found this piece today and was happy to see such a nice cross-section of the intricate wall structure:
  11. what species of clam is this?

    I found this in Jefferson county, Indiana while walking on the hillside about 200 ft up. There are many creeks and brooks with limestone beds in the valleys around the area that are full of fossil clams like this. The fossils on the hillside are less eroded since they are not in water-filled creeks. Most of the fossils found on the hills are in big limestone plates, and are all smashed together and on top of one another, but sometimes I'll find some individual clams like this one and some coral too. This clam is 2.7 cm wide, 2.1 cm tall, and 1.7 cm thick but I usually find smaller ones and occasionally some larger ones, but this is one of the best preserved ones. They have a very distinct M or W shape on the front. Does anyone know what species this is and if its still around today?
  12. This is the 3rd post of features from a limetone/dolostone rock, found loose in a river, presumably carried south from the limestone bedrock further north. If this is just chert concretion, not a fossil, then Q How did the parallel grooves form? The grooves in this feature had been emclosed in soft chalky dolostone material until I removed it with vinegar baths and much rubbing, so were not caused by weathering and are not glacial striae. And last, this is one of several bonelike features in this rock, that I understand are just chert, but the structure of the end looks bone-like to me. It was seeing these bone-like features sticking out of a normal limestone rock that caused me to soak the rock in several vinegar baths and keeping rubbing and brushing, which exposed all the small features with parallel grooves in this 3-post post.
  13. This is one of several features I uncovered in a limestone/dolostone loose rock in a river. Only the "gingko leaf" end of the worm-like feature was exposed: the "worm" was enclosed in soft chalky dolostone that I removed with vinegar baths and much rubbing - so the "worm" had not been subject to weathering. From the Pivabiska River, 20 km north of Hearst, Northern Ontario, Canada, presumably carried south by glaciers from limestone bedrock farther north. I've been told it is a chert concretion, but could it be a chert-ified fossil? Q: If it's not a fossil and just concretion, how did the parallel grooves form? (The other features have parallel grooves too).
  14. This is one of several features (will be 3 posts) in a limestone/dolostone matrix, from loose rock in a river, presumably carried south by the glaciers from the limestone bedrock further north. Pivabiska River 20 km north of Hearst, Northern Ontario, Canada. These features were INSIDE soft chalky dolostone that I removed with several vinegar baths and much rubbing; these features were not exposed to weathering. So my Q is, What caused the parallel grooves? What made the lattice-like inside? I've been told these are chert concretions, but could they be chert-ized fossils? Another post to come...
  15. I'm not sure if folks would like to do this or not, but I thought it might be fun to have a run of "I Spy" with a large fossil-rich rock that I recently found in our yard. Experts and newbies both welcome! This rock weighs 4 pounds and measures about 6 inches by 5 inches. These are macro images - all from the same rock. Check them out and see what you can "Spy" in each image! Look closely - very closely! And think in 3-D format! ;-) A bit of background - this rock was found in Huntsville, Alabama and is likely mostly limestone. I mostly find fenestellan bryozoan, crinoid, and coral fossils, with a few bivalves. So, surprise me with what YOU see in these photos!
  16. ID on a fossil from Decorah Formation, MN

    I found this plate near in the upper decorah formation Minnesota (Ordovician period limestone). These chunks are frequently littered with trilobite bits and fragments but this lookk a little odd to me. It has a "knob" or bump structur on one side and a gradual bend on the other. Its still partially covered by coral and debris but most of it is exposed. Any ideas?
  17. Hello everyone, Yesterday my girlfriend & I went fossil hunting for birthday. This was the first fossil hunt the two of us did on our self, our previous hunts were all excursions with the Belgian Association for Paleontology. We visited two locations, but locations are part of the Formation of Gulpen, around 68 million years old, dating back to the Maastrichtian (these outcrops are part of the Maastrichtian type location where the first mayor Mosasaurus discovery was done). The first location we visited was a limestone outcrop next to the Albert Channel here in Belgium, only a 20 minute drive away. I discovered this outcrop while looking out the window whenever I drive to Maastricht and yesterday we decided to check it out. It is quite a little outcrop, no more than 70 meters wide, but one of the few places left where you can hunt in Limburg. We hunted here for around one and a half hour and we only searched the fallen and loose bits of limestone that were the results of erosion. We didn't want to start hacking in the rock. We mainly found ancient sea shells of different species and some bryozoa's in this location. And a some pieces of wall where teeming with urchin fragments, but we didn't find any intact one near the surface. But since the urchin graveyard was deeply enbedded in the rock and we didn't want to hack in it, we left it as it was The second location we visited was the "Grote Bos" in Beutenaken in The Netherlands. Here there are holloways in the forest that expose some limestone outcrops. This spot is known for it's belemnite which can be found on the forest paths, because the soft limestone gets eroded but hard belemnites remain, making them very easy to find. We found around 25 belemnites during our 1 hour hunt there as well as a shell imprint and a mystery fossil. Like the previous location, the patch of limestone where these belemnite can be found is also only around 70 meter long, but luckily very rich.
  18. I am enjoying learning about the rocks in our yard. I found one that had something embedded in it, so I decided to try to remove the items from the matrix. I brushed and cleaned it well with vinegar and water and then used dental tools to pick the matrix away from it. How fascinating it was to see the matrix fall away - it was NOTHING like I expected it to be! There were two items embedded - and they may have originally been one whole piece. It is hollow and I have no clue if it is a fossil of some sort or a different type of rock that was embedded into a limestone rock. It took hours to remove these two items, but it was worth it. I did take some photographs along the way, but unless anyone is interested in seeing those, I will just post the end result. These two photos are of the first piece to be removed. This first piece is not deep - it seemed like maybe a "top" to the other piece, although they were laying side by side in the limestone. I have photographed both sides. Measurements are about 1.5 cm x 2cm. Thanks! Ramona
  19. My grandson and I found this chunk of fossiliferous limestone in our yard today and I cleaned it with vinegar, but it is very crumbly. I can tell that it contains mostly fenestellan bryzoa and crinoids, which is what we find most of in our yard. What is the best way to preserve this fossil to keep it from crumbling? I am hesitant to clean it anymore due to the fragility of it! Thanks! Ramona
  20. Limestone Mystery

    I'm working on my fossil limestone sink and there are a handful of fossils showing up in the polished bowl. Most are horn corals or shells, but this particular one caught my eye. It might just be a shell or something, but I figured I'd let trained eyes give it a shot. It's about 1inch long.
  21. taking a rock (fossil?!) apart

    I have been watching Youtube videos about cleaning fossils and have learned quite a bit. Since I have SO many rocks in my yard I decided to kind of take one apart and learn about it. I originally thought this was some sort of coral/sponge fossil, but now I am not so sure. It has been thoroughly cleaned with vinegar and then I started removing what I think is the "matrix" with a dental pick. It's okay if I damage this - I am doing it so I can learn! I basically dug out any soft areas and have been surprised at what is emerging. In fact, I am not so sure it is a fossil at this point? Question: Will a fossil be damaged by scratching matrix out from around it? How can you tell what is matrix and what is fossil if you aren't completely sure what the fossil is? And I mostly have fossiliferous limestone, which is hard/impossible to remove all of the matrix from (this rock is not fossiliferous, but I have a lot of them laying around!)? All input appreciated! Thanks Ramona
  22. Unidentified crystalized Brachiopod

    Hi everyone! A few months ago I recieved this little brachiopod with crystalization on the inside, it was a nice piece which came very cheap. Unfortunatly there was no information on this piece, no ID, no location and no age. All I know is that it came from an old collection and that the previous owner had lot's of fossils from Scandinavia & Germany. The matrix in very soft limestone, comparable to the Maastrichtian limestone from my region, I know similar limestone formations can be found in the UK, France, Denmark & Germany, to name a few. So I was wondering whether anyone can give more information on this piece, I know it's hard to ID something when no information is available, but maybe someone has a piece similar to this or knows the species when he sees it? Thanks in advance!
  23. Antiquatonia maybe? (Brachiopod)

    I think this is the genus Antiquatonia, but I’m looking for some confirmation. I found this back in April, going through my finds and trying to ID. Found in Limestone. Glenshaw Formation (Conemaugh Group)
  24. What is this?!

    I've got to stop picking up rocks when I take the dog out... I already have so many in the house that I need to clean and study more, but I went and did it again today. It looked interesting, but now I am baffled. I cleaned this just a little bit with a weak vinegar solution and then looked at it. I am used to seeing fenestellan bryozoan, so these little round things caught me off guard. Are they branches of the bryozoan fossils? I I do seem some fenestellan bryozoan elsewhere on the rock, I think, but these little things look like eggs or snails? Point me in a direction and I will go research - again?! Thanks so much for being patient with me and my neverending questions! Ramona
  25. I think I have completed my first full cleaning of a fossiliferous limestone rock. I will post a series of macro photos of the rock here and would welcome input. I am new at this (like I said, it is my FIRST full cleaning) so would appreciate input and suggestions. I first soaked the rock in a vinegar and water solution for a couple of days, taking it out every once in a while and brushing it with a soft bristled paint brush. I had ordered some essence of vinegar to have a stronger acid, so when that arrived I used a very small amount of it on the brush to continue cleaning the rock. I then placed it in a baking soda and water solution overnight, again brushing and rinsing it every once in a while. It seemed to have stop bubbling this morning, so I declared it "done", but would like thoughts on whether it looks completely cleaned or not. I mostly see fenestella bryozoan fossils in it, in different stages and at different angles, so please let me know what else, if anything, you see in this rock. The size of the rock is as follows: 5cm long, 3 cm wide, 2.5 cm tall and I found it in our yard in Huntsville, Alabama. I am posting a number of macro photographs of different areas of the rock and I may ask questions on some of them. Thanks for any and all input!