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Found 211 results

  1. Siphonia? (Cretaceous sponge)

    I found those spherical, almost shapeless (or vaguely champignon-like) pieces in an SE Pyrenees Upper Campanian site with rudists, corals, ostreids and brachs. Could They be Siphonia sponges? A broken part of the last one
  2. Cup shaped sponge?

    I found this 4cm wide "knitted mushroom cap" at a beach near Kenosha in SE Wisconsin. I thought at first to have found a tabulate coral, but looking closer, I can't see any corallites at all and oddly, the top, instead of flaring out to a solid "table", curves back into itself, with most of the center missing altogether. All of this made me think that maybe this is a sponge? If not, what could it be? Top: Bottom:
  3. Petrified brain coral?

    I found this in my Seattle area yard, near the dead stump of a small maple. After washing and bleaching the septums appear filled with sand and shell bits. There is also something growing throughout it like a veinous system—likely plant? It is heavy. There are striated and mineralized layers. There is a ventricle feature and a faceted stem—it’s disturbingly brain-like. I feel honored to have finally guessed my way through your captcha (respect!)~~hoping someone can identify this oddity. Best guesses so far are coral or fungus, but I’ve not found any examples sporting this stem canal...
  4. Biologic or odd concretion?

    Hello, I'm posting this for a buddy of mine. This piece was found in the French Joe Canyon area near the town of Whetstone, AZ. Any ideas if this is an actual fossil or an odd looking concretion? Thank you for any and all help.
  5. Ocean Life

    Good morning, I was hoping that somebody could let me know if one of those is sponge and the other one is coral? Or if not could you please tell me what they are? Also, these were found in Glen Rose Texas, in the country at a creek bed . And that is Somervell County
  6. Marine Fossils (Ohio)

    Figured I’d post one more while I’ve got the collection out. When I was younger, my grandfather had a gravel driveway put in. I assume it came from Ohio, although I have no idea in truth. I frequently picked through it and found a few fossils. The gravel is clearly made of marine sediment for the most part - I’ve found brachiopods, trilobite fragments, shells, etc. I just wonder what these two could be? The first one has a couple of different structures in it - I’m thinking sponge or coral for the main part. The second, I have no idea. It looks footprint-ish, but this doesn’t make sense due to the marine nature of the gravel. Any ideas? Thanks, Nate
  7. One of my finds from yesterday. Found it on the surface in a creek bed here in W KY. (That is 99% of my finds!) Apologies for not knowing the geology & time frame. Not quite sure how to go about figuring that out yet. Could this be a sponge or coral? It's about 12 cm long, 9 wide at the widest, & heavy, probably 2 lbs. at least.
  8. Hi to Forum members; I am an amateur rock collector who likes to look for fossils. For the most part I have not found anything fantastic but I am hopeful. I kindly request any information and or comments about a recent flint specimen from my back garden in Ipswich, Tuddenham Road. I have other photos of the flint that show unusual structures. On those photos, I used my photo app to adjust the exposure to get more fine detail. If it will help, I would gladly share. Also from my back garden, I found a petrified seed/pod/nut shell. Can someone help me identify what it is. May thanks! Munchy2
  9. Stumbled arcoss what a seller is calling a careaonitas sponge from the Hopkington formation in Milwaukee county Wisconsin. I tried to Google careaonitas sponge and didn't find anything...is it possible to have a different name or is it simply a misspelling by the seller and my Google skills are weak?
  10. Sponge? Coral? Fish scales?

    Hi all! I found some of these fossils at a rock shop and I have never seen their kind before. I honestly I’m not even sure what it could be. As far as I know they’re from Morocco, but that’s just a guess. Any ideas?
  11. These things are very small and difficult to find but I came across a stone that was littered with hundreds of forams and these spicules. I don't recall seeing anything that look like a sponge so I'm very curious as to why there were so many of these spicules being found in this stone that was found in a desert.
  12. strange coral that needs ID

    Hi this is matt again the other day in the creek I found this strange fossil coral can anyone id it for me ? here are some photos
  13. Missouri Fossil ID Help

    I found this fossil on a hiking trail near Eureka, Missouri. It was on top of a hill. There is a natural spring on the trail at the base of the hill. I think it is some kind of coral or sponge, but I can’t find any pictures that look exactly like this so I don’t know what it is. Any help you can give me is appreciated!
  14. Hi everyone this is matthew again today in the creek I found a neat coral fossil called syringopora retiformis here is a photo
  15. Fort Apache Limestone finds

    While dissolving an unknown 2 inch long sponge from the Permian Fort Apache Member of the Schnebly Hill Formation from northern Gila County in Arizona I found several silicified brachiopods with spines. Several Bellaclathrus spinosus brachiopods were present ranging from 0.75 to 1.5 inch across and had spines as long as 1 inch. Thankfully some sort of sudden but gentle event buried the sponge and brachiopods preserving them for me to uncover.
  16. I would like to clean the surface of this coral to try and remove the dirt. The dirt is really embedded (i.e., not removable with water alone). How would I go about doing this?
  17. I was wondering if someone could help me identify this fossil found over the weekend. It was found in South Bend Indiana. Because it was found in Northern Indiana, the fossil isn't from around here and was probably deposited by a glacier from somewhere up north. It is approximately 12 cm at its longest point and about 4 cm wide. Thank you for your help!
  18. Middle Devonian Stromatoporoids

    These fossil stromatoporoids came from the Traverse formation, Potter formation, Bell Shale, and antrim/dundee formation locations near the north eastern tip of the Mitt in Michigan USA.
  19. calcareous sponge spicules

    I have read that finding spicules preserved in sponge is quite rare. I am finding sponge fossils with what I believe are spicules, but the fossils seem to be all calcium carbonate, no silica. this seems to me to show the original sponge body was aragonite or calcite based. This was found on the north eastern side of the tip of the Mitt in Michigan The area is considered Middle Devonian, but these were found on the shore of Lake Huron, so there is also the possibility that they are glacial transports. Comments welcome.
  20. Ordovician Coral or Sponge?

    Came across this fossil today while out enjoying the sun. I've found coral before but the little cavities are usually infilled, this is like swiss cheese, wondering what it is. It feels like a pumice stone in weight and texture. Thanks in advance!
  21. Archaeocyathid?

    This is a fossil I am looking at purchasing. I asked the seller for a better photograph and the photos below were sent to me personally, so I do not believe this is in violation of the terms of the site (though I really do apologize if I have inadvertently broken the rules and I will immediately remove the content!). I believe the round fossil in the center to be an archaeocyathid, but I would like to be more certain before I pay to have it shipped from southern Australia. Unfortunately, that is all of the information that the seller has shared with me about location, so I don't have useful information like formation. I am not certain whether the subdivisions that I am seeing are the result of recrystallization or reflect actual septa. Thank you for your feedback!
  22. Missouri marine fossil ID

    Hello, In my third mystery find around the Kansas City and Blue Springs, MO areas I found these specimens. And I have yet been able to find any photos on the internet that can come close to their character. Can anyone identify what are these tiny egg-like beads? I hope my photos help. Thanks for your attention.
  23. Missouri marine fossil ID

    Hello, I live near west Jackson County, Missouri. I found this fossil while I was walking my dog. It was part of the landscaping for the front of a building that has been there for 20 years or more. No one knows the origin of the material for the landscaping. Lots of reading, I found most of the chert in the landscaping has crinoids as a point of the time period, Devonian? Can't find any photos to compare it with on the internet, been trying for 2 months, a crash course on paleontology 101. I see Missouri in a different light from it all. Can this be identified? Thanks for the opportunity to share.
  24. Silurian Sponge? Coral?

    Hello, I can't seem to ID this fossil found in Silurian reef rock, Chicago area. I made some slices. Any help appreciated.
  25. I have another oddity here. Found on a Tampa Bay beach in Florida. It is about 3 inches long, brittle but light weight and hollow, with one end open and one end sealed. The side hole or spout attaches to the larger opening. I did some research and it resembles a calcareous sponge. Is it a sponge? Is it a fossil or modern? Thanks as always to a great group of people! Please see 5 pics below.
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