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Found 46 results

  1. 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.
  2. 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 moisture content, after which it is passed through an ore shoot and finally removed from the tailing's pile to a permanent resting place out of the way. This mature specimen together with a smaller immature specimen I donated, might be enough to add another species to Cyclaster, based on the "extra" rows of plates on the end near the periproct. I don't have a picture of the smaller specimen, but made a cast in silicone of it. The next specimen is from a famous fjord called Limfjorden, also in northern Jutland. It was found along the edges of the shore, moving back and forth in the waves and nearly didn't make it back with me because of how fragmented it looked when I first found it, I took it with me anyway since you never know, and it turned out to be an exceptionally large and well preserved specimen ( usually no bigger than 20mm, this specimen is 35mm). It is a clam called Cuspidaria precuspidata, the blob was some super glue I hastily applied to stabilize it in the field since I forgot my B72 bottle, not ideal but in a time of need you use what you have ;P The first specimen was declared Danekræ in the spring of 2019. The second speciman was declared Danekræ in the spring of 2020
  3. Crocodile Egg or Sea Urchin?

    During a trip to Egypt I found this potential fossil near the city of Aswan between the banks of the Nile River and Sahara Desert. I had thought it might have been a meteor and the sand fused around the meteor due to the Intense heat. But, I tested it with a magnet but there was absolutely no attraction. Therefore, I thought it might be a fossil given that I read about many fossils being discovered in the Sahara and the composition does appear to be any rock or stone that I've ever encountered. I assumed crocodile due to the spiky and bumpy texture, along with the historic prevalence of crocodiles in that region. What do you think this is? Thanks!
  4. Here are my new fossils! And how my collection looks now. For size comparison the enchodus tooth to the right in the picture of the entire collection is 5,6cm long (2.2 Inches long)
  5. Echinoid spine or crab leg?

    So-this collected yesterday in the Kansas City area again, but not sure what "layer" as the road cut was a jumble of mixed rock. My first thought was sea urchin spine, but I see only one row of spines, similar to what you see on many crustaceans; even though it is half-buried I thought sea urchin spines had generalized "points"?.... thanks again for all your patience reviewing these! Bone
  6. Found this after the huge rain a couple miles from the ocean in Cardiff California. There are sandstone hills nearby and I'm also trying to classify what may be a fish. Is it an urchin? Or a barrel cactus. Thanks in advance
  7. Hello members of TFF I'm looking for echinoids (sea urchins/sand dollars) to increase my collection of this kind of fossils. I'm interested in all kind of echinoids but what matter for me its the state of conservation. I have for trade several types of fossils from miocene (shark teeth, bivalves, gastropods...), cretaceous (echinoids, bivalves, gastropods) and Jurassic (echinoids, brachiopods, vertebrate material...) Thanks Vieira
  8. Fossilized cretaceous sea worm?

    Found small sea urchin next to the ammonite in Lake Texoma Duck creek formation over the weekend. While I was cleaning the sea urchin, I noticed something that caught my eyes. It appears to be a small worm that lived in Cretaceous sea, gotten attached to the sea urchin and fossilized at the same time. Anybody familiar with sea worms like this?
  9. Echinoids

    The first 8 are echinoids and echinoid spines, I have seen plenty of photos of them while researching forams. Doctor Mud.....I can not confirm it but I do think you may be right about the last two being some sort of echinoid, This thing is only about a half a millimeter in size, I can't find anything online that looks like it but will keep at it.
  10. Please help identify some Big Brook finds!

    I took a trip to Big Brook in Monmouth County, NJ yesterday and found some things that I need help identifying. Any help would be appreciated! Pic #1: Possibly sea urchin spines?
  11. My sea urchin build I've had the stuff for a while and decided to start assembling the little bugger.
  12. What is this fossil?

    Hello, I was shell hunting today on Holden Beach and found, what I believe, is a fossil. It appears to be some type of sea biscuit(based on photos I’ve found online). It is very hard and filled with some type of compacted sediment. Any ideas what it might be and how old it is?
  13. Diplodetus Echinoid

  14. I decided on a whim to go fossil hunting yesterday. I took off on the 2 hr drive to get to my favorite area the North Sulphur River Texas. I jumped off in three creeks to see footprints everywhere. I decided to go try a creek I spotted a few years ago but never tried. It paid off. I found my first NSR echinoid after 4yrs of heavy hunting. Echinoids are quite rare at NSR. I also found a really cool Pachydiscus ammonite with an Inoceramid on it. I think I"ll try that creek again in the future.
  15. This is another piece discovered at an estate sale, which of course means I do not have the info such as location it was found, etc. It has some amazing detail, spiny legs? but it's so squished into the matrix I have no idea what it could be. Hope to receive more info. The piece is approx. 6 x 4"
  16. Texas fossil hunt trip

    I and my 8 years old boy a great time fossil hunt in Texas. During our time in Austin, with Erose help, we hunt at Texas 360 and found a nice sea urchin, some devil toe snail (oyster,) and shells. It was raining so I didn't spend much time there. After Christmas, we start our fossil hunt trip. We stop at Meridian road cut for some heart sea urchin, coral, and shells. Then drove to Mineral Wells Fossil Park. My son love this place so much because the fossils are so easy to find and he love crinoids. We didn't find any shark teeth or trilobite but we are happy. My son want to assembly the crinoid pieces to make full crinoids then we decide to put everything we found at Mineral Wells Fossil Park to make Pennsylvanian period ocean floor. We stayed at Fort Worth for the night. The next morning, me and my son visited the 2 sites KimTexan gave us (thanks Kim.) I went to the first site, parked the car at the day care (read Kim post carefully) and crossed the street. We walked for about 15 minutes and couldn't find anything except for this, please help me identify this fossil if they are actually fossil. It was so cool and my son want to get back to the car. On the way back, we found the first echinoid. I walked my son to the car and came back for more echinoids. I walked around another 10 minutes without any echinoid but I realized the white rocks I steps on are fragment of ammonites. I decided to search for a complete ammonites or at least a good fragment. And I found this. This is what it look like after I remove some matrix I found 2 more echinoids and got back to the car to go to the second site. The second site has a lot more fossils and is very easy to find. I found many echinoids which are all less than 1 inch, a complete ammonites, and 3 pieces of fossils which I don't know what they are. I found this ammonites in the clay. Since I have no tool with me, I walked back to my car to get a garden shavel (the only thing I have) and a bottle of water. i pulled the water to the clay to make it easy to extract the fossil. Here is what it look like after I clean it up We went back to the hotel to pick up my daughter and husband, checked out and drove to Dallas for lunch then to Waco to visit Waco Mammoth National Monument and back to Austin. We had a great time hunting and so happy with the fossils we got.
  17. Sea Urchin

    From the album Delaware Fossils

    Boletechinus sp. Late Cretaceous Mount Laurel Formation C and D Canal, Reedy Point North Delaware City, Delaware, USA
  18. Sea Urchin

    From the album Delaware Fossils

    Hemiaster delawarensis Late Cretaceous Mount Laurel Formation C and D Canal, Reedy Point North Delaware City, Delaware, USA
  19. echinoid morphology

    BeadleCLASSIndispensablechinoi-1995-Evolution.pdf Steven C.Beadle Retrodisplacement of the oral and anal openings of dendrasterid sand dollars Evolution,49(6),1995,pp 1203-1214 edit: apologies/size,1,3 Mb approximately second edit:"1005" changed to "1995"
  20. I'm looking for as many as possible urchin spines all sizes to reconstruct an urchin. I would also like matrix to mount it on preferable from the same area as the spines. I can trade fossils from Washington a prepared crab or unprepared either of your choosing.
  21. Sea urchin non det.

    From the album Invertebrates

    Sea urchin non det. Middle Triassic Crailsheim Germany Diameter 7cm
  22. Hello everyone, For this first report I take you to visit a small site in the Hauterivien. A few kilometers from the village of Hauterive which gave it its name. (Sorry for the quality of the photos I was with my nephew aged 14. And the rain made us go home prematurely) In this region the Hauterivien is composed in its upper part of a yellow limestone called "Pierre jaune de Neuchâtel". (It has served a lot in the construction.) Below is layers of marl called "Marnes d'Hauterive". These are the layers we are going to explore. Some views of the career: In this photo, we can see the succession of layers: Snow and water did their job of clearing during the winter: Much of the site is still subject to winter landslides. We will avoid setting foot there. The wall is still unstable. A sample of the finds of the day: Lamellaerynchia, Musclina and Plicarostrum make up most of the brachiopod fauna of the quarry. I still managed to get my hands on a much less common Belothyris. And on this copy that I have not yet identified. I have not found anything comparable on this site yet. Some sea urchins that can be found on the site: The inevitable and very common Toxaster retusus: Holaster Intermedius: Pseudodiadema rotulare: That's all for this ride.
  23. Magnosia nodulosa

    From the album Fossils from Switzerland

    A beautiful but small (0.4 cm long) Magnosia nodulosa from the quarry Schümel near Holderbank (Switzerland). In the "Birmenstorf-Member" small sea urchins arent that rare but also not comon.
  24. Sea Urchin Fossil - PHYMOSOMA a.jpg

    From the album MY FOSSIL Collection - Dpaul7

    Sea Urchin Fossil - PHYMOSOMA Morocco Middle Jurassic (about 170 Million Years Ago) Phymosoma is an extinct genus of echinoids that lived from the Cretaceous to the Eocene. Sea Urchins are a group of marine invertebrates that today can be found in almost every major marine habitat from the poles to the equator and from the intertidal zone to depths of more than 5,000 metres. There are around 800 extant species and the group has a long and detailed fossil record stretching back about 450 million years ago to the Late Ordovician Period. Commonly called "Sea Biscuits" of Sea Urchins Echinoid is Latin for "pickle". When alive these animals were covered with movable spines which gave protection and provided locomotion. Kingdom: Animalia Phylum: Echinodermata Class: Echinoidea Order: Phymosomatoida Family: Phymosomatidae Genus: Phymosoma