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  1. QuakeHunter

    what is this sponge

    Found it in Oligocene strata in Mississippi. Bay Springs, MS
  2. Nanosaurus

    Cambrian Sponge?

    I apologize that this is just one photo taken by my phone, but that is all I have to use at the moment. This fossil (about 6 cm long) is from the middle Cambrian Spence Shale of Oneida Narrows, Idaho. I am leaning towards a sponge? Does anyone have any idea what this is? Thanks for the help!
  3. Dpaul7

    Regispongia Sponge fossils.jpg

    From the album: MY FOSSIL Collection - Dpaul7

    Regispongia Sponge fossils Bangor Limestone Formation in north Alabama Mississippian Period (ca 325,0000,000 yrs old) Sponges, the members of the phylum Porifera (meaning "pore bearer"), are the basalmost clade of animals, as sister of the diploblasts. They are multicellular parazoan organisms that have bodies full of pores and channels allowing water to circulate through them, consisting of jelly-like mesohyl sandwiched between two thin layers of cells. Sponges have unspecialized cells that can transform into other types and that often migrate between the main cell layers and the mesohyl in the process. Sponges do not have nervous, digestive or circulatory systems. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. Kingdom: Animalia Phylum: Porifera Class: Calcarea Order: Heteractinida Family: Wewokellidae Genus: Regispongia
  4. Arizona Chris

    Id like your opinion on this one....

    Hi All, This is one of a kind - we found only ONE of these in 250 pounds of Permian limestone that we reduced in the acid bath over the past few months. Its a lovely thing, I think its a stellate miniature ins branching sponge, but Id like your opinion. Its hollow inside the main tube, and no pits or chambers like a bryozoan. Anyone seen a tiny sponge like this? Here is top and bottom shots: (20 layer stacks!) Your opinion is appreciated!
  5. Rossi

    Fossil coral or sponge?

    I was doing some fall work in the garden and I dug a hole deeper than usual to start a compost pile and this was in the ground. It ppears to be coral or something. Can anyone see an outline or give any advice? I didn’t try to clean it as it seemed to be fragile. Thanks!
  6. Tidgy's Dad

    Adam's Cambrian

    A rangeomorph holdfast trace fossil from the Ediacara formation, Rawnsley quartzite of the Flinders Range, South Australia. This specimen is Medusina mawsoni, so called because it was until recently thought to be a jellyfish, but is now believed to be the attachment point of a fractal rangeomorph as Charniodiscus is the point of anchorage for Charnia sp. This one may have been the holdfast point for some species of Rangea. The diameter of the outer circle is 1.5 cm and the fossil is estimated to be 555 million years old.
  7. Northern Nature Trade

    Coral or Sponge?

    Hello, I received this specimen that I believe is a fossilized coral or perhaps a fossilized sponge and am looking for help in identifying the species and age for a museums collection. Any help would be appreciated!! Thanks, Holly
  8. Lillian

    What is this?

    A few months ago I was helped here to identify a clam fossil and now near the same area I have found this. It doesn't match any images that I have found searching. Thank you.
  9. StoneCrazy

    Coral or Sponge?

    Hello! I collected this rounded stone in Southern Ohio, actually to paint on originally, and became enamored with what appears to be a fossil algae on top so kept in in my collection. Recently I inspected it through a loupe and noticed the sponge like pores for the first time. I tried to show in the photos that there is a transition or directional grain to the pores that I've seen in whale bones and sponges that washed ashore when I lived in the Pacific Northwest. It's sized at about six inches at the widest, and is a sandstone rather than the expected limestone. What do you think? Is it a sponge or a type of coral?
  10. This place is just like Wrens Nest Dudley i.e. Silurian. I like both places but find different things at each. Personally I have found more Trilobites bits at Wrens Nest. 1 - Arachnophyllum murchisoni Coral, top view 2 - Amphistrophia funiculata Brachiopod 3 - Favosites Coral 4 - Halysites Coral 5 - Heliolites Coral 6 - Kodonophyllum truncatum Solitary Coral 7 - Labechia conferta Stromatoporoid sponge 8 - Leptaena depressa Brachiopod 9 - Trepostome Bryozoa
  11. Hi all, Fort Apache sponges are quite uncommon, only one sizable specimen was obtained from over 200 pounds in rock. But it is well preserved, and show the major features of fossil sponges from the Paleozoic. To be more precise, from our first locality, where nearly all the ostracods came from - we had no sponge material at all. The second new site, a half a mile further down the trail produced this specimen from about 35 pounds in limestone. They were also with numerous bryozoans and gastropods in the same mix. The one sponge we found is a calcareous type sponge that have been preserved by silica replacement. What I dont know is if this is a part of a big flat sponge, or perhaps a section of a tubular one. Maybe some of you can ascertain that. This is the largest specimen we found, it was in a class by itself! About 4 cm long and about 1 cm thick, this fragment of a large irregular sponge had excellent pore and ostium details. A millimeter scale is at bottom. 3.5x view . A closer 7x view of its surface reveals the very "spongy" appearance of the type you might wash your car with. The holes are the pores which take in water to an interior cavity for respiration and feeding on plankton. If this was a part of a large flat sponge, those larger holes might be the osculums and the tiny surface pores the in current holes. Even closer at 20x, this shows the pore details more clearly in a massive 16 focus layers stacked image. There have been a few false alarms on these calcareous sponges. Some of the really worn down bryozoans that are wrapped around urchin spines look indeed like a tubular sponge! We continue to look. This last weekend, me and my auxilliary rock hauler - I mean my wife - packed out another 36 pounds of promising rock from the second richer locality along the Highway 260 Trail east of Payson here in Arizona. We hope to find more! Thanks for looking, its a pleasure for us to show what we have found so far!
  12. I_gotta_rock

    Unidentified

    From the album: Delaware Fossils

    Found on the beach in New Castle, Delaware. Known Paleozoic fossil area. Identity unknown.
  13. JoLucyKelly

    Sponge? Norfolk coast, UK

    Hello all. I believe this a form of sponge but I'm not sure. It was found on the Norfolk coast, UK. Any help appreciated, thanks
  14. 0lderthandirt

    Sponge reef maybe

    This is my property, about 100 acres total. About 25 miles south of grand canyon and just 6 miles from grand canyon caverns at 5400 feet elevation. The first picture is a hill just outside my door, take the dog up this everyday when we go for our walk. Every rock in this picture has fossils on them. An example is the second picture. About 1/8 mile into the trees there is a trail I've made over the years with the quad. I've just recently realized a section of that trail is like an ancient seabed. All red ,airy rocks -light but hard to actually break. Every rock you pick up is embedded with fossils, mostly shells I think. An example is the third picture. I'm thinking this was perhaps a sponge/coral reef because of all the tiny holes or was this just sediment? Any thoughts or comments would be most appreciated. Thanks (Oops, wasted too much memory on that hillside, will post red rock separately ) This is the example of the red rocks that make up the trail
  15. bjkibz

    ID for Sponge

    Found this sponge on the beach in Beach Haven, NJ. Wondering if anyone could tell me if its modern or Pleistocene (I ask bc I have heard of Pleistocene fossils being found off of NJ's coastline Two more angles
  16. aek

    Sponge?

    Found in a quarry near Rockford, Illinois, Ordovician, Galena group. It looks like a sponge, but I can't seem to find a match. Any help appreciated.
  17. JUAN EMMANUEL

    Stromatocerium huronense

    From the album: Credit River Fossils from Streetsville, Ontario (Georgian Bay Formation, Upper Member)

    Stromatocerium huronense (Billings, 1865) Late Ordovician stromatoporoid sponge. Found along the Credit River at Streetsville, Mississauga, Ontario. Collected as a loose specimen, most likely coming from the Stromatocerium reef of the exposure this came from. Georgian Bay formation, late Ordovician. There is a tiny Favistella alveolata coral colony growing on the edge of the specimen, perhaps this was a commensalistic relationship? Specimen is 12 cm long. However this species in the exposure where it came from can grow beyond a foot in diameter as mounds.
  18. This is another picture with a ruler so you can tell the size of the sponge that I posted the other day. Perhaps it will help in identifying it.. Thank you.
  19. nemocoral

    Coral or sponge??

    Here is another specimen that I have found. I haven't been able to identify it with any research so far so any help would be greatly appreciated.
  20. njfossilhunter

    Possible sponge from the Wenonah Fm

    I was at one of the Monmouth Co Brooks this week and found this odd looking thing and at first I thought it was a concretion but it doesn't look like any I have seen before and I have seen many many many of them. I think it might be a sponge of some kind I have seen them in the M.A.P.S. collection for those who is familiar with the collection. I would like to hear from my fellow forum members and a few opinions if this maybe a possible sponge. I just found this post from 2012
  21. Dave Clarke

    unknown and sponge like

    hello, this is my first post i know nothing about fossils. my 6 year old daughter found this today & was very exited to have made the discovery, i can not figure out what it might be, was thinking a type of sponge or eggs ?? it was very fragile, it also had lots of shells and other shelled sea creatures fossilised in the same rock. any help IDing it would be great. i am going to bring a piece of it to my daughters school but need to go back with some tools. thank you for sharing your knowledge !
  22. pambosk

    coral, sponge or none?

    hello, location: Moni formation size: 6cmx3cmx3cm There is a hole in the middle
  23. Rockwood

    chaetetid ?

    I've had poor luck with sponge posts in the past. Have I at least got these right ? They are from north eastern Maine. The rocks are likely Silurian/Devonian in age.
  24. MSirmon

    Sponge?

    Ran across this in Hunt Tx and am Hopeful it's a sponge but that may be because I'm desperate to find a really good one.
  25. MSirmon

    Sponge?

    I found this and a larger piece between Mt Blanco and Dougherty Tx. It is super lightweight. It doesn't float but does take its time sinking. While cleaning I noticed weird shell like markings inside where a piece was broken out (prior to my finding it). I'm not sure what to make of it but it has the characteristics of a sponge. How far off base am I?
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