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  1. Hi, I was hoping that someone would be able to tell me if the smaller echinoid is a juvenile Corystus dysasteroides or possibly another species. Both specimens were collected from the Jan Juc marl, late oligocene (Janjukian), Victoria, Australia. Thanks. (I posted this in the wrong place earlier)
  2. JohnJ

    Tylocidaris sp. echinoid

    This is an undescribed, new species of Tylocidaris found in the Lower Cretaceous Georgetown Formation of Williamson County, Texas. Discovered on April 12, 2009 by John Jackson.
  3. will stevenson

    Fossil echinoid

    Hi guys, I lost the label on this, I’m fairly sure it’s from the Pliocene of safi, morocco but I could be wrong, would anyone have any idea what it is? Thanks
  4. There is a spot in the Peace, not far upstream of the Canoe Outpost, that yields relatively large quantities of the sand dollar shown in the photo below. I have these 2 relatively good examples and 3 more partials stuck together in a block. All are of nearly identical size. I had assumed Miocene based on the source, but the the publication from UF on "Pliocene and Pleistocene Echinoids" has the only sand dollars coming close. The closest matching in shape is Encope michelini, but the sample is twice the size of my examples. Anyone have experience with these?
  5. I_gotta_rock

    Echinoid (Sea Urchin)

    From the album: Delaware Fossils

    Phymosoma sp from the C and D Canal in Delaware. Late Cretaceous
  6. will stevenson

    Some echinoids :)

    Hi Guys, I don’t know if we have any echinoid experts on the forum but I figured I’d try, I’ll start with this piece this is miocene from the Murray river, australia, there is a lovenia woodi on there but I’m not sure what species the regular echinoid is, thanks for your help
  7. Fossilhelp

    I have this Echinoid I think

    I found it on a south west cliff/beach and it has a odd internal spine like thing. Any ideas? I’m quite bad at IDs as well, so any clues about it ? Please help. Here’s some photos hope this helps. Thanks for your time. God fossils still fry my brain, just thinking how old, and it’s trip to get into my hand still makes me go woah! Last 2 phots show the spine like thing quite well
  8. RuMert

    Moscow echinoid test

    From the album: Late Jurassic echinoderms of European Russia

    Unknown echinoid, Moscow, Moskva river, Middle Volgian, Dorsoplanites panderi zone, 8 mm. Exceptional find
  9. RuMert

    Moscow echinoid test 2

    From the album: Late Jurassic echinoderms of European Russia

    Unknown echinoid, Moscow, Moskva river, Middle Volgian, Dorsoplanites panderi zone, 8 mm. Exceptional find
  10. RuMert

    Fili echinoid spines

    From the album: Late Jurassic echinoderms of European Russia

    Abundant in Fili Park, Moscow, in the Epivirgatites nikitini layer (middle Volgian). Up to 5 cm
  11. RuMert

    Ulyanovsk echinoid spines

    From the album: Late Jurassic echinoderms of European Russia

    Ulyanovsk Oblast, Volgian
  12. RuMert

    Pyritized echinoid spine

    From the album: Late Jurassic echinoderms of European Russia

    Ulyanovsk Oblast, Kimmeridgian, 2 cm
  13. Found this years ago in the Loire Valley in France. Any information about age/species would be great to have. Thanks!
  14. erose

    Coenholectypus sp. cf. ovatus

    From the album: Texas Echinoids, ERose

    Coenholectypus sp. cf. ovatus (Whitney & Kellum)

    © ERose 2021

  15. historianmichael

    Boletechinus delawaricus

    From the album: C&D Canal Micro Fossils

  16. historianmichael

    Cidaris sp. Spine

    From the album: C&D Canal Micro Fossils

  17. historianmichael

    Echinoid Piece

    From the album: C&D Canal Micro Fossils

  18. historianmichael

    Echinoid Spines

    From the album: C&D Canal Micro Fossils

  19. Wrangellian

    Pliocene? Southern California fossils

    The other day I acquired a few fossils from fellow members of the rockhound club who spend their Winters (except this past winter) down in Arizona and collect there and in neighboring states. They gave me the location via the Gem Trails book they used to find it, but of course that doesn't provide any info on the formation nor any specific IDs for what you find there. I'm having trouble (as usual) finding this information, so I wonder if anyone here has this info handy. I found a geo map of Calif and it appears to be Pliocene in that area, but it doesn't give any formation names. The area
  20. Hi Guys, My son's friend asked me to id this and I'm embarrassed to say that I'm stumped! It's siliceous, it was found in UK and its owner has suggested it could be from Whitby (or less likely from North Cornwall or the Isle of Man). It's intriguing me because if you look through the little holes you can see daylight suggesting to me that the specimen might be fossil and not just a strange depositional feature. I'm convincing myself that I can see five-fold symmetry and that it looks like some sort of echinoid but I might be way off the mark. If you think it's depositional or diagenetic c
  21. 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
  22. Vieira

    Clypeaster with predation marks

    From the album: Fossil Collection

    Clypeaster with predation marks
  23. mtwoman

    Echinoid ID help please

    Found in Parker County, Aledo area, Texas, 3-26-21. Limestone base.
  24. Shellseeker

    Half_Echinoid Silicified

    So I am hunting the Peace River and finding good stuff, like mastodon verts, horse teeth, colorful hemis and into my sieve pops a broken sand dollar...... and I do a little dance , got a smile ear to ear , because I am hoping , with a little help from my friends that this this Echinoid will help to identify the formation I am hunting, maybe Pliocene or middle Miocene. There are a lot of years between them. @Harry Pristis indicated that the silicified shells might more likely imply middle Miocene. The echinoid has an interesting shape and no holes.... I think it is possible.... @C
  25. Nimravis

    Echinoid ID Help

    I am hoping that someone can ID these echinoids for me. I do not remember where I got them from and I do not know the location that they were found, but I am thinking Texas. This first group of three I believe that they might be Phymosoma sp. , but I am not sure. Her is the other one that I am hoping for an ID on. Thanks
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