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Found 13 results

  1. A little help please

    I found this last week Pretty cool kinda looks like a squished dinosaur haha what is it
  2. ID thck bivalve with spines

    I have been told by a scientist that this belongs to a cockle but I'm having a very hard time seeing it as one. I have found several bivalves on line that have spines but can't find an exact match for the pattern on this thing. The thick section is a little over 5mm and the thin section is about 2mm. It does not slope down to 2mm it has steps in it, which I can't find on any bivalves on line. Also, the spines on all bivalves I've seen appear to fan out as they move from the rear (hinge area) to the thinner forward area but these spines are coming together at what appears to be the thinner area and fanning out at the thick section. Has anyone ever seen anything like this???
  3. Echinoid parts - Texas Pennsylvanian

  4. fossil teeth in matrix mystery

    I have this piece, which sadly I do not know much about, being that it was acquired at an estate sale and had no info. I have not been able to find something similar looking online, except for maybe a small section of teeth from a helicoprionid shark? The piece is about 6 x 7" and the teeth(?) are about 1/2" in length.
  5. Hi I'm looking for dorocidaris spines, can anyone help me?
  6. Three productids with most of their spines intact, showing that they looked like hedgehogs. I haven't identified them further largely because I can't see the shells properly. (Edit: likely to be Echinoconchus or similar echinoconchid - see below) These are from a Brigantian (Mississippian) mudstone in NE England, Co.Durham. 1) About 6cm across 2) Interior brachial valve showing spines projecting around the edge from behind. About 3cm across. 3) about 4cm across:
  7. Strange Trilobite Pygidium

    Here's probably the most interesting piece I came across this past summer .... It's provenance, in the Yukon Territory's northern Ogilvie Mtns., just a bit south of the Arctic Circle, is what might be described as an iconic Ordovician faunal assemblage, rich in large Gastropods, Orthocerid Nautiloids, large horn and tabulate corals and relatively few Brachiopods. Trilobites, however, seem to have been a bit player in this group ... Over many years, I've found only a half dozen partial trilobites at that exact spot. The other pygidia I've found are fairly conventional, similar to Pseudogygites in appearance. However, the Cephalons I've found there are strange, and appear to belong to another species altogether (I'll post images of these later...). This thing, with it's array of spines, does not seem to match anything else I've seen ... It's about 20mm wide X 10mm in height, while what's left of the spines add another 10mm. Anybody seen one of these?
  8. Hi all! Under the presumption these are echinoderm I've been searching for anatomical features, particularly disarticulated crinoid and archaeocidaris of which both are plentiful in the matrix. In my searching I've been unable to find anything that even remotely resembles these pieces. Any input is much appreciated. Plattsburg fm. - Hickory Creek sh. I attached a group photo of some of them I found, followed by 4 select specimens showing each side front and back. For scale, field of view is ~1cm. Group shot Front Back Front Back Front Back Front Back Thank you all!
  9. Spiky Brachiopod

    This came from a friend in Morocco and it seems very strange. I added a scale to hopefully help. Thanks.
  10. Rock Fossil Ocean Beach SF

    Ive found this & other small fossils at ocean beach in San Francisco. Most look like sand dollars but this one has a foot w/clear metatarsals/phalanges & what looks like 3 vertabral columns or 3 portions of 1. Does anyone know what this is?
  11. Tiaromma sp with spines on oral view

    From the album Echinoidea from Calcários Apinhoados da Costa D'Arnes formation

    Tiaromma sp with spines on oral view, Calcários Apinhoados da Costa D'Arnes formation, Upper Cenomanian, Portugal. 14 mm.
  12. Pseudocidaris sp spines

    From the album Echinodermata

    Pseudocidaris sp, Camadas de Alcobaça formation, Kimmeridgian, Portugal. Several spines 1.5-3 cm.
  13. Spines

    From the album Echinodermata

    Stylocidaris affinis and Schizechinus serialis spines, Loco Formation, Lower Pliocene, Spain. 17 to 25 mm.