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Found 194 results

  1. 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.
  2. 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.
  3. 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!
  4. 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!
  5. 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.
  6. 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.
  7. 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.
  8. 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.
  9. Florida Agatized Sponge or Coral?

    I found this awesome glittery piece on the beach in Tampa Bay. It is kind of layered and has a cheesecloth pattern on it. It is about 2 x 2 1/2 inches in diameter and about 1 1/4 inches in height. It is lighter than my typical coral finds. It has what looks like 2 bore holes that go right through. I'm not seeing any corallites so I'm leaning towards a sponge. I have 3 photos-- top/bottom and one side view. (Note: photos don't capture the crystallization) What do you think it is? Thanks in advance.
  10. Eocene Sponge Identification help.

    Hi everyone! I have been cleaning out, organizing and labeling the mounds of sediment buckets in my garage. Plenty of time over the holiday break to try and get my mind back in to the fossiling mode. I tried at the beginning of this year to get my Friday excursions going again and venture to some quarries, but there are limited areas which the fossil hunter may tread now a days. Then priorities in life too . These buckets of sediment have been waiting for me for many years and months, just waiting for me to take the time to investigate their treasures. I started a few days ago on a few of my Eocene, Castle Hayne Formation, North Carolina buckets. Many bryozoa, crinoid, echinoid and occasional crab claw specimens appeared during my screening and washing. Several species of sponge too. I came across this dandy lil' fella and would like to ask for some assistance in identification. Has that "sponge" look to it and seems to have other characteristics. I did not find it in the NCFC Invert Book or my other Invert books. Any help is greatly appreciated. Best, .
  11. Animal/Mineral/Vegetable?

    I found this "thing" in North Myrtle Beach, SC. It's hard but looks like old sheet insulation. Note the dent. Any idea? Thanks!
  12. Sponge on a stick...

    Hi again, Didn't think I should bother you guys with another sponge, but this is a bit peculiar and I can't find anything about sponges on sticks? This was found in the Kristianstad Basin, Cretaceous period. It is heavily erroded and mineralized, but probably a sponge. It seems to have a circular growth around what seems to be a stick of some sort. They seem proprotional, so I figure they grew together, but they might not be the same spieces? (the stick + the sponge). The images does not make the fossil justice, but it is a very voluminoes sponge with bulges that reminds of glass sponge. The stick is circular in the bottom and more flatt in the top. It might not have reached tremendous heights...? Questions: Would a sponge grow on a stick? Why would a sponge need to reach height if it is not drawing energy from sunlight? How would a sponge like this pump water? I can't find any "sucking holes" Shouldn't a sponge with sticks be more branching? More than one branch? All the best/ Linus
  13. All-- I'm newer than new, but I've been here before and received great help. Will you please help again? I found this approximately 4.5" x 4.5" (11.4 cm x 11.4 cm) piece in a creek bed (Spring Creek; altitude ~700 ft [213 meters] above sea level) in south-central Missouri about 26 miles north of the Arkansas border. (Very near Rockbridge, MO.) I THINK it is either a coral or a sponge and hope I haven't already misidentified it! Thank you for helping this total novice. --Bill
  14. Hi guys! I don't post here often, but I'm a PhD student in geology, currently working on tropical Paleogene palynology. I'm taking an unrelated class on the Permian Basin and I am working on identifying some of the fossils our class saw in Guadalupe Mountains National Park. I'm not a sponge expert, and I was hoping someone on the forum might be able to confirm or correct my identifications. I might make a follow-up post on the non-sponge fossils we saw on the trip. A bit of background, these pictures were taken in the field with a metric scale, the scale has been cropped out of the pictures and a 5 mm scale bar is added. No fossil collecting was allowed on this trip so I won't be able to provide additional images. The fossils are from the Capitan Formation, which is Permian Period, Guadalupian Epoch, Capitanian Stage. The global stage name is actually named after the nearby El Capitan peak. Amblysiphonella? Archaeolithoporella?
  15. sponges?

    posted this a while back and was told it may not be a sponge but an odd cert well just found another...now not so sure...I am really leaning toward some sort of sponge again as the second is a little larger but the same cup shape with an attach area.
  16. watchamacalit?

    think i had put this on here before but the pics were bad and it was with a group... took a few new pics and found a similar item posted way back in 2014 I think also in texas... could this be a similar item? but in perhaps poorer condition. this is the post:.....
  17. Porifera indet.

    From the album Sponges, Kristianstad Basin

    Upper Campanian, Cretaceous I thought this was a Callopegma aucale, but now am unsure. (See discussion below) I've used this ref for identification ->LINK I've concluded from other sources that the area where this sponge was found - does indeed belong to the (lower) Upper Campanian. About 16cm at the base and 17.5cm at the diagonal.
  18. Hi, I think this thing looks stunning. The shape is gorgeous. And big! Location is Sweden, Kristianstad. Period should be cretaceous, upper or lower. Probably grew quite deep under water? All other fossils so far on this particular location have been sponges. I've gone through all sponges for the cretaceous period at cretaceous.de, but haven't found anything that looks like it? In the bottom center, there is a mark that looks like it been attached to something. On the top, there are grooves, as if something perhaps was attached to the top? Or maybe not? This piece also have other fossils ingrown. Some of the other fossils I've found was ingrowns from similar items, and not burrow casts as I initially thought. In the bottom center there seems to be a flower shape with 5 bulges. I would be grateful for any help! All the best/ Linus Edit: I think it looks something like this when complete?
  19. what is this?

    found this little thing it looked interesting it looks like it was once prickly? it also looks like it had a stem? is this a seed or perhaps a sponge?
  20. sponge or crinoid?

    sponge or crinoid? ... the way I am looking at is the small part is a stem?...and then the cup shape the other end?....or is the large cup shape is where it attached to something? and the small stem part is just that the base of a stem or it could be another miss.
  21. https://www.sciencedaily.com/releases/2018/10/181015113522.htm
  22. another tiny thingy...I am saying sponge?....but could be wrong or some sort of fossil plant or sponge with a crystal center?
  23. Hi, I found this fossil yesterday on the beach(?) of Ivösjön. Should be from either early - or old - Cretaceous since those are the two known periods carrying fossils in this area. It looks brainy, and I have searched but haven't found anything similar for the cretaceous period. It looks a bit like modern scleractinian, but I'm not sure? It has these s-curve patterns, draping-like foldings. I kind of like it. It looks a bit like a rock brain. All the Best/ Linus I've posted more fossils from this area in these threads.
  24. Sponge ?

    Hi, I've found today this tiny but interesting piece in a Campanian-Maastrichtian coral-rudist lithosome in SE Pyrenees. I've found there branched corals and bryozoans, but this one don't seem to me neither coral nor bryozoan. Could it be a sponge ? Thanks
  25. Sponge or archaeocyathid?

    This is a piece that I picked up on a geology field trip years ago in eastern New Mexico. I apologize that I have unfortunately lost the field notebook that contains more specific location information, but I am hoping to get in contact with the teacher that took us there for other reasons and might be able to provide additional information if I can ask him. The section was Cambrian to Ordovician in age: it started with abundant stromatolites, then progressed into thrombolites and finally siliciclastics disappeared during the Ordovician sea level high-stand. This piece was found from amidst microbialites, so should be Cambrian in age. My professor identified it as a "sponge" at the time. I am wondering if it is perhaps an archaeocyathid based on the age and the central hole. Either way, if anyone that is more familiar with that area has thoughts on any more specific identification, I would be thrilled! Please ask if you need photos from a different angle or anything like that. Thank you very much!