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  1. Desrosiers1718

    Fossil echinoids?

    I’ve found two of these in a gravel area in my front apartment area I remember buying the bags at a popular hardware store, I was told they are Echinoids, at first I thought they must have been something I collected and threw there but these are not common in my part of California. As far as I know. Any idea what species these are and where they might have originated? I’m tempted to buy another bag.
  2. Hello all! Found some nice Cretaceous fossils from early early Maastichtian age (and/or late late Campanian). These are around 70-67 million or 70-68 million years old (the exact age is difficult to determine but around the mentioned 70-67 mya, possibly including the late late Maastrichtian). Mainly belemnites from the Belemnitella and Belemnella (Pachybelemnella) species and sea urchins (two 5-7 cm Echinocorys sp. Possibly E. scutata (Leske, 1778). Some belemnites are black and/or brown coloured. All the fossils are found in sediments of Cretaceous age (Formatie van Gulpen, Kalksteen van
  3. Ashleyliebs

    Fossilized Sea Urchin

    I found this on the beach in NJ today. It has a lot of weight to it. Any idea how old it might be or what species this could be?
  4. Recently I received a box full of sea urchins from Eben-Emael (Marnebel) Belgium. I have been actively collecting sea urchins for a few months now and find it especially difficult to properly identify the smaller urchins. Who can help me on my way? I will post photos in this topic in separate comments, so that each group of sea urchins can be identified. The squares on the background are centimeters.
  5. uller6

    Fossil Sea Urchin - Devonian

    I found this fossil sea urchin in Ithaca, NY in a layer of Moscow Shale (~400 MYO). I'm trying to figure out exactly what this is, and I think it might be an archaeocidaroid. The earliest published cidaroid is ~260 MYO (J.R. Thompson, et.al. Scientific Reports, 2015). I don't think this one is a euechinoid but i suppose it could be. Any feedback would be appreciated.
  6. historianmichael

    Boletechinus delawaricus

    From the album: C&D Canal Micro Fossils

  7. From the album: Westphalian cretaceous fossils

    Together with sponges like Coeloptychium and others you can find sea-urchins in the campanian of Coesfeld. Normally you´ll find Echinocorys, Micraster and other irregular forms. Rarely regular ones like Salenia or Phymosoma. A nearly perfect one comes from Coesfelder Berg, size is around 6 cm, the best i´ve ever found
  8. FF7_Yuffie

    Tiny Taiwan fossil - sea urchin?

    I found this last weekend, but had it put aside until now. It is from the miocene marine outcrops of the Dahan River. Now, this is tiny--we are talking 2mm in diameter. It's something, it stands out among the rock. But I am not sure if it is an extremely small sea urchin or not. I hope the pictures help. It was tricky to take a picture of because of its size. It's small, circular, with tiny ridges on each side.
  9. Caaaleb

    Possible Cretaceous Sand Dollar

    I found this Echinoid a bit over a year ago in a creek in the DFW area of North Texas. I found this in the Washita Group of the Cretaceous. I thought this was a sand dollar, but I recently learned that sand dollars did not appear until the Ice Age era. I posted a question regarding the Echinoid on the discussions section of the forum and was told it was not a Sand Dollar. Anyway, I would like to know the species and classification of this flat Echinoid if anyone may know. I've never seen any Echinoid like it.
  10. SafariSam

    Sea Urchin ID Needed

    This is at a museum gift shop so I can't measure or give you the location found sadly. Seems like a sand dollar of some kind. Not really my speciality. Can anyone help me find the specific species? Thanks!
  11. historianmichael

    Echinoid Plate

    From the album: C&D Canal Micro Fossils

  12. I_gotta_rock

    Echinoid (Sea Urchin)

    From the album: Delaware Fossils

    Phymosoma sp from the C and D Canal in Delaware. Late Cretaceous
  13. Found these fossils: one sea urchin, belemnites (mainly Belemnella (Pachybelemnella) obtusa (Schulz, 1979) and/or sumensis and Belemnitella cf. minor II (Christensen, 1995) and one oyster (Pycnodonte vesicularis (Lamarck, 1806). Could anyone help me to determine the sea urchin? I think Hemiaster aquisgranensis (Schlüter, 1899)? Found in the ground around the Gulpen Formation (Cretaceous, late late Campanian, early Maastrichtian).
  14. Tetradium

    Nortonechinus primus

    From the album: Lime Creek Devonian Rockford Iowa

    Nortonechinus primus a sea urchin - I suspects the spines is a bit more common than people thought but still rare. More overlooked due to its small size and resembles broken golf tees.
  15. 0sprey

    Mysterious Basement Fossils

    My mother recently moved into a home in Shepherdstown, WV and when I mentioned I'd gotten into fossils recently she said the previous homeowner had left some fossils in the basement and that I could have them if I wanted. These have absolutely no provenance, I assume they're not from the area, but I think they're neat and I was just wondering if they were complete/distinctive enough to be identified. Also, is there anything I should do to clean them gently and keep them preserved? I have no experience with this type of fossil. There are 2 sea urchins and 2 shells, the larger sea urchin is
  16. JeffTX

    Cyprus Sea Urchin

    Presented for discussion is my 1975 find from the southern cliff side Cyprus coast about 100 meters above sea level. Specimen is larger than a baseball but not as big as a softball. Although it has survived seven household goods moves I would like to stabilize it before any further deterioration. I will check the posts on stabilization but any expert comments would be appreciated !
  17. Bonehunter

    Pennsylvania microurchin?

    I put this on the general forum as well, but this is probably more appropriate!! In my search for conodonts in Pennsylvanian stark shale (between Winterset and Bethany falls limestone) I routinely find concretions/nodules-most are powdery but sometimes i find teeth and other microfossils. Well much to my surprise, upon splitting my thousanth shale, I found a 1cm nodule, and within it, this apparent micro sea urchin-one of two in the nodule. From spine to spine (7:00-1:00) it measures just under 2mm in diameter I am refining my photog techniques with a newly purchased leica M420,
  18. Lone Hunter

    Please confirm baby Echinoid

    Now that I have a loop I am 're-discovering' things I have collected, like this which I dismissed as a concretion or nodule. Now I see a an Echinoid right? Can't remember exactly where I found it it's been so long, somewhere in Eagle Ford. Is there enough of it to identify?
  19. I_gotta_rock

    Boletechinus Sea Urchin

    This specimen comes from the 1980 dredge spoils of the C and D Canal. The type specimen for this species comes from the Navesink Formation exposure of the same canal, not far away. Known by locals, it was not actually described until 1986. Although not the most common of species at this locality, and almost unknown outside of Delaware, these miniscule urchins were nonetheless plentiful at the Reedy Point spoils. Recent excavation for barrow removed most of the sand where my specimen was found.
  20. Bonehunter

    Pennsylvanian microurchin

    I put this on the microfossil forum as well, but wanted to give a look-see to this intriguing fossil! In my search for conodonts in Pennsylvanian stark shale (between Winterset and Bethany falls limestone) I routinely find concretions/nodules-most are powdery but sometimes i find teeth and other microfossils. Well much to my surprise, upon splitting my thousanth shale, I found a 1cm nodule, and within it, this apparent micro sea urchin-one of two in the nodule. From spine to spine (7:00-1:00) it measures just under 2mm in diameter I am refining my photog techniques with a
  21. Hi there folks, I need help and advices on how to prep some echinoids that I have found on calcarenite matrix. I am new in fossil prep plus I know these kind of calcarenites are very sneaky to treat. In the picture below there is a Scutella subrotundae before and after a quick prep-test I did with a couple of nails. The problem now is to take away the sand grains very close to the shell. Which technique should I try to follow now? I am thinking to the digestion in cold acetic acid, which I know it is used to extract microfossils from limestones and calcarenites, but I do not know i
  22. I_gotta_rock

    Tiny Sea Urchin

    From the album: Delaware Fossils

    So sweet! This is a very rare Cretaceous echinoid (sea urchin), Boletechinus. They are typically no more than a couple mm in diameter. This one is shown next to a pencil eraser. Most of the ones in the Smithsonian's collection come from sand and silt removed for the creation and maintenance of a canal, which exposed fossils well below the surface. This one comes from New Castle County, Delaware.
  23. sixgill pete

    Arbacia improcera

    Self collected from an exposure along the Neuse River in Craven County N.C. While I have found many fragments in the past, this is the first complete specimen I have found. A rare find in the Yorktown Formation. References: Upper Miocene Echinoids from the Yorktown Formation of Virginia and Their Environmental Significance, Porter M. Kier (1972). Smithsonian Contributions To Paleobiology, Number 13. Pgs. 8-9. Plate 1. Echinus improcerus Conrad, 1843a: 310. Psammechinus improcerus.—Stefanini, 1912:705. Coelopleurus improcerus.—Clark and Twitched,
  24. Thought I would share a few specimens that made it to the National collection in Denmark. Back in 2017 I found a Cyclaster sp. from a site in northern Jutland primarily known for it's commonly found Echinocorys sulcata. Out of around 150 primarily fragments found of Cyclaster sp. , roughly 5 were complete and only one fully inflated. Considering that they go through a rough process - First the material is excavated from the walls using a hydraulic excavator, then the material is spread out on the "floor" of the quarry and turned multiple times to reduce the
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