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Found 259 results

  1. Ensiferites brandenburgi sponge

    I found another Ensiferites brandenburgi sponge that is now currently the largest ever found at 7 cm x 7.5 cm across. Part of the top displays lots of 1 mm spicules. Unfortunately the top of the calcareous sponge is mostly covered with caliche and possibly the limestone matrix. Is there any hope to prep this to expose all the spicules on the top? How? This could become a near museum piece thus I don’t want to practice my prepping skills in it. Help @Ptychodus04.
  2. Edit: is it Porosphaera?

    Hello all! I found this today and originally thought it was an archaeological item, I sent it off to the local officer and he said that he thinks it's a sponge fossil. I was wondering if anyone may be able to give me some more information please? Thankyou!
  3. devonian sponge or not

    this was found in deer lake pa on a large piece of shale. whatever these things are they are over 12 inches long, branching and 1/2 to 3/4 inch in diameter. occasionally they appear to have straight vertical lines on the surface. I could see this pattern in only one or two places and could not get a clear photo. Help would be appreciated.
  4. Hi. Could I have help with ID on these. they are all from the same small patch beside the road at the eskine range. WA.
  5. Hello everyone, i found a flint ball in my field approximately 8 cm diameter, in Corfu island in north-western Greece, around 500 meters from the sea. I opened it and the enterior is like in the photo. Apart from the big cavity at the center, there are also many wholes around with red soil inside. Is the big cavity a fossil sponge? If yes, when is approximately dated? Thank you
  6. Recptaculites? Verde Valley, Arizona Devonian

    These tiny fossils I suspect of being Receptaculites, but I'm not at all sure. The patch is about 12x12mm, about the size of a dime. It's on Martin formation dolomite from the Devonian, Verde Valley, Arizona. Other fossils on the same rock include Rugose and Tabulate corals and unidentified Brachiopods. Note the lichens growing in and on the sample. Any ideas?
  7. POROUS PATTERN WITH CONE SHAPED CORE

    Found in my backyard in southern california. Hard to get a good pic of it, but the center of it is a cone shape. Circular and wide at the top, with the pointy part towards the inner/center.
  8. Is this a sponge, coral, or pumice?

    I found this in a sand pit near Kalkaska Michigan as a kid. It was in the vally wall around lake Skegamog. Next to it were a number of sand stones containing shell fossils. I don't know if it matters, but the pit wall I dug into was about 75 feet below the undisturbed grade. The stone I believe to be a sponge is approximately nine inches tall and weighs approximately 9.5 pounds. The chamber's are not uniform in size so I doubt it's being coral. The fact that there were no igneous rocks present makes me doubt pumice. I apologize that I could put up more pictures and close ups, but there was a limit on the upload size.
  9. Hi everyone this is matt again today in the creek I found 4 different fossils in the creek . They are called fenestella, favosites, productus and a bryozoan fossil.
  10. coral or part of sealily?

    Could this be a part of a sea lily? It is about 2cm long, surronded by a lot of the stalks of sea lily? or is it a coral? The specimen is preserved in what seems to be a big sponge form ordovicium.
  11. Pliocene boring sponge traces on tooth?

    Hoping someone could help me identify the traces on this tooth? I found the tooth with pliocene fossil shells and the location does have middle to late pleistocene mammal fossils. I'm 90% sure this tooth is from a cape porcupine Hystrix africaeaustralis and the species still thrives in the area, from the pleistocene. If these are traces of a sponge then the tooth is a little older than thought. If it's another organism that has left the traces it could be late pleistocene or holocene with some mineralization taken place.
  12. Fish bone or sponge?

    Another driveway find. Is this a sponge of some kind or possibly and bone from dorsal fin? Kind of looks in the shape of the ulna i cant find any reference on what an isolated one looks like. Can bones be calcified like this? i have no idea.
  13. Hey everyone. I thought I'd share some of the things I found on my last fossil hunt. So.. Many.. Fossils! One might even say that there were a plethora of fossils. If I could, I would've taken them all with me, but sadly my backpack can only carry so many rocks. I was literally examining each rock I had, trying to decide which to carry back and which to leave behind and how many I could fit in my pants pockets before they started to fall down. Eventually I decided to just stop looking for fossils and hike back to the jeep. This lasted all of 3 seconds before I found another a beautiful byrozoan and was trying to figure out how to fit it in my pack. The byrozoan and the sponge below are my favorites since i don't see many of them and the brachipod in the matrix just looks cool. lol Its fascinating to look at these fossils and think about how Arizona used to be completely underwater long, long ago.
  14. Kalkberg: Sponge?

    I just remembered this object that I found in the Kalkberg formation. Upon first seeing it I thought it might be a concretion, but after washing it up my opinions have changed. Now I can see many other fossils alongside it and after comparing to other Kalkberg fossils I believe it may be Hindia sphaeroidalis, Is this ID accurate? I appreciate any help.
  15. UKNOWN ORDOVICIAN FOSSIL

    I found this strange fossil last time I went on fossil hunting. Could it be a sponge? Anyone have an idea on what this may be? It was found in Norway, a site of middle ordovicium. Martin
  16. What kind of coral fossil is this?

    Hi, this is matthew again. Is anyone able to tell me what kind of coral this is? Here are some photos.
  17. Probably a sponge but....

    This was found among one of the large chert layers in the permian Kaibab Limestone. The sponge, Actinocoelia, is very common in this layer but this seems different or is at least a different presentation or segment of it. It's nearly perfectly round. It's diameter is 3 1/2 cm.
  18. Hello. Today i found in the same area close to the beach in Greece 4 rocks. Looks like agatized fossilized corals or sponge or something similar. Maybe is only a strange rock. This area in lost of time years have water very rich in silicon. So, can anyone help for identification??? The rocks is very heavy. I have a lot of photos but they need to put only one. This one photo is a broken piece of the rock . It's little from outside and inside. Thank you!!!
  19. Cliona cretacica

  20. Hi everyone this is Matt again. Today in the creek I found this very cool clam fossil. Here are 2 photos.
  21. Mineral, sponge or coral?

    Found this in the same location I found the shell fossils in my previous ID post.
  22. This rock has me puzzled. The sides look like they might be the laminae of a stromatoporoid. The top of the rock though, lacks any trace of mamelons and the wavy lines between them that I typically see on stromatoporoids. Instead the rock is full of Cheerios ;-). So I'm wondering if this is something totally different. Maybe geological? Oddly preserved oolites? But then, what are the layers visible on all the rock's sides? Dimension: 1.5" long. TIA to all! Detail of top: Side:
  23. today In our horse pasture I found this large dirt stained favosite fossil what would be the best way to clean the fossil here is a photo of the fossil
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