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Found 63 results

  1. Ordovician: Echinoderm scale?

    Finally, I have a fossil with some geological information associated. This piece is from the lower Ordovician Wah Wah Formation, specifically Section J in the Confusion Mountains in western Utah. I believe it might be an echinoderm scale. I would be thrilled if anyone could verify that and/or add any additional taxonomic information for me. Thank you so very much for your thoughts, and please let me know if you need additional photographs and I will do my best!
  2. LINK Sedimentary context and palaeoecology of Gigantoproductus shell beds in the Mississippian Eyam Limestone Formation, Derbyshire carbonate platform, central England L. S. P. Nolan1*, L. Angiolini2, F. Jadoul2, G. Della Porta2, S. J. Davies1, V. J. Banks3, M. H. Stephenson3 & M. J. Leng4,5 Proceedings of the Yorkshire Geological Society Published online July 25, 2017 https://doi.org/10.1144/pygs2017-393 | Vol. 61 | 2017 | pp. 239–257 ABOUT 12 MB,RECOMMENDED,not in the least for all those interested in the Carboniferous("Dinantian")of Europe and brachiopod ecology
  3. Some kind of Echinoderm?

    Need help to identify the following fossil. It was found in Milos, preserved in volcanoclastic sediment and diatomite. Data from a study in the area suggest late pliocene to early pleistocene. Looks like an echinoderma, but unlike any I've ever seen, since it's test appears to have layers and no apparent mouth (unless it's on the bottom part). I have even considered it being a cystoid or some coral, but I haven't had any luck researching my theories. Units on the pic with the ruler are cm and size is about 4.5cm. Any suggestion would be much appreceated!
  4. I am hoping someone on the forum is familiar with Ordovician carpoids. i collected this specimen at a roadcut in Claremont Ohio. it is from the Maquoketa Formation. Any information on what species it might be would be greatly appreciated.
  5. This is a retcon of an earlier post I had. Cambrian fossils aren't something one thinks of when they think of Maryland fossil hunting, and perhaps for good reason. The Cambrian rocks of the state are poorly exposed, those few areas where they do outcrop usually being gobbled up in urban sprawl. Compared to sites elsewhere like in Utah or York, Pennsylvania, the Maryland Cambrian is also rather barren. You could probably count on both hands the number of macrospecies in the entire early and middle Cambrian section of the state. But this rarity only makes collecting in it that much more interesting! Luckily for me I'm pretty close by most of these formations, so I have a decent knowledge of the area and outcrops, but even then it took a decent amount of time researching and scouting to find a site. The most recent formation I visited was the Araby Formation. Up until the mid 20th century the Araby was considered part of the Antietam Sandstone further west in the Blue Ridge, but after some more studies done on the formation it was found that it's lithological character was distinct enough to warrant it being a separate unit. Whereas the Antietam is a white quartz sandstone (much like the Oriskany I posted about yesterday) deposited in a beach-like environment, the Araby was deposited in deeper water (compared to the Antietam) and is more a mixture of siltstones, shales, phyllites, and slates. Together with the Antietam the Araby has some of the oldest fossils in the state dating back to the early Cambrian period some 540 million years ago. This makes it the oldest formation in the Frederick Valley. For those that don't know the Frederick Valley is a predominantly limestone syncline in west central Maryland (I consider it western Maryland, but most people probably wouldn't). At it's core is the early Ordovician Grove Limestone (which has practically no fossils), and on it's flanks are the late Cambrian Frederick Limestone (fossiliferous in parts, but those parts are very rare) and finally the Araby Formation. The Araby takes up positions along the far flanks of the valley, and it's eastern boundary with the metamorphic rocks of the Westminster Terrane marks the Martic Fault (no Washingtonians you don't need to worry about a San Andrea, from what I've read the Martic has been inactive for a long, long time). Due to it's sediment type and that of the surrounding rocks, the Araby is also a minor ridge forming unit, holding up the series of hills that flank Frederick Valley's eastern edge. These hills are nicely visible from the grounds of Monocacy National Battlefield, which is also of interest for marking the site of the northernmost Confederate victory (July 9, 1864 for those who're curious) in the Civil War. This ridge forming aspect means that, although very thin and covering a very small area, the Araby Formation has multiple exposures throughout the Frederick Valley. Some of the better ones are visible along I-70 just east of it's crossing over Monocacy River (an MGS team found some trilobites there) and MD-355 as you drive through the woods before hitting Araby Church Road (I believe the namesake for the formation is actually the Araby Church). In terms of fossils the Araby is almost exclusively dominated by the trace fossil Skolithos linearis, an annelid worm burrow. Other fossils found in it, however, include echinoderms and Olenellus sp. trilobites. As another aside the Cash Smith Shale, once held as an independent formation, also has trilobites and I believe inarticulate brachiopods reported from it, however it is no longer considered an independent formation but rather a member of the Araby Formation. Almost all of my fossils were the worm burrows, still cool but for everyone's sake I won't constantly repeat what they are this time around. Image 1: The largest burrow I've found. I originally thought it was a genal spine from a trilobite due to it's size. Image 2: Cross section of a burrow, outlined by the iron oxide stain. Image 3: Another burrow, this one roughly outlined by the iron oxide. Image 4: The large tubular structure covered in iron oxide (you might be noticing a pattern here with the oxides and burrows. I can't say definitively if they're connected in some way, but oftentimes you'll find the one with the other).
  6. Possible crinoid stems?

    While on vacation at a (rented) beach house last week, I noticed that the (marble?) kitchen countertop had some interesting shapes contained within the stone. Many of the shapes have the appearance of cross-sections of crinoid stems. I know that marble is a metamorphic rock, so if the original rock had contained fossils, could there still be recognizable remnants of the fossils? Please let me know if I'm thinking along the right lines, and whether these look like crinoid stems to you. The reference coin has a diameter of 21 mm; I have no idea where the countertop rock was quarried.
  7. ID please - Ordovician - Edrioasteroid?

    Hello. I'm attaching two photos: #1) an image of a "Rare Primitive Echinoderm (Edrioasteroid) from the Upper Ordovician of Ontario, Canada," from the following fossil website: https://www.fossils-uk.com/product/new-rare-primitive-echinoderm-edrioasteroid-from-the-upper-ordovician-of-ontario-canada-sku0918-isorophuella-incondita/ #2) a fossil that I found that looks similar and is about the same size as the Edrioasteroid from #1. Is it possible that my specimen (#2) is this Edrioasteroid? Thanks for any assistance! Camille
  8. Cystoid and coral?

    Hello friends and TFF family! Another little palaeozoic problem. This was given to me back in the mid 1980s and was said to be from the Pentamerus Grits of Newlands, Girvan, Ayrshire, Scotland. Brrrrrrrr!!!!!! I have it marked down only as "Cystoid?" and it may well be. The hexagonal patterned bit down the edge of the rock including the smooth shell like piece is 2.2 cm long. Bad picture. Here is a better close up. You can kind of see above that the hexagons are lying on the surface of the smooth bit, which i once thought was a bit of Pentamerus oblongatus but now think it may be some sort of inner layer of the fossil to which the hexagons are attached. Clearer below : Any ideas would be most welcome! @piranha @TqB
  9. Could use some help on these 0.5cm - 1cm invertebrate(?) conical spines in the well known Salem Limestone, a marine limestone of the American Midcontinent. They appear to be solid calcite but do not quite match up with the shapes of crinoid spines and echinoid spines that I know from the Mississippian. I have looked at umpteen Salem Limestone samples but have seen these spines at only one small locality. Any insights appreciated! but please provide your reasoning or evidence.
  10. Waldron mystery fossil

    I picked up this weird fossil at the quarry in St Paul, IN last year, found as is: on the ground, split in half. It seems to be studded with crinoid holdfasts and bryozoan encrustations. Any ideas what it is? Under magnification it is a beautiful specimen. Also, I'm tempted to sand/polish one of the halves to possibly bring out some details. Would this be advisable? Thanks for any help.
  11. All specimens come from the Devonian aged Arkona formation. 1. Echinoderm, possibly a blastoid Tried taking another pic...still not quite sharp 2. Unknown, possibly bryozoans (remainds me a bit of Evactinopora) 3. Unknown, probably the inner structure of ostracods With these being the outer shell: 4. I posted these about a month ago but I don't think we figured it out. Now I am pretty sure they are scaphopods.
  12. Need a cidarid echinoderm ID

    I found this little jewel a while back, but never found out what species it is. Can anyone tell me what genus species it is? This is a close up of an ambulacral and pore area. I don’t think I can get much better on the close up picture quality. I do have a number of pics from other angles if needed. Thanks in advance for your input.
  13. I am going through and sorting out fossils that I collected on a number of road trips that I did this year. I am looking to see if someone, maybe @Peat Burns or @Herb , with experience in the Ordovician from St. Leon, Indiana can confirm what I think may be a couple Edrioasteroid (Isorophus cincinnatiensis).
  14. Echinoderm, Hemiaster Urchin?

    Possible Hemiaster?
  15. From the album MY FOSSIL Collection - Dpaul7

    Pentremites Blastoid echinoderm fossil Kentucky, USA Early to Middle Carboniferous, from 360.7 to 314.6 years ago Blastoids (class Blastoidea) are an extinct type of stemmed echinoderm. Often called sea buds, blastoid fossils look like small hickory nuts. They first appear, along with many other echinoderm classes, in the Ordovician period, and reached their greatest diversity in the Mississippian subperiod of the Carboniferous period. However, blastoids may have originated in the Cambrian. Blastoids persisted until their extinction at the end of Permian, about 250 million years ago. Although never as diverse as their contemporary relatives, the crinoids, blastoids are common fossils, especially in many Mississippian-age rocks. Kingdom: Animalia Phylum: Echinodermata Class: Blastoidea Order: Spiraculata Family: Pentremitidae Genus: Pentremites
  16. From the album MY FOSSIL Collection - Dpaul7

    Pentremites Blastoid echinoderm fossil Kentucky, USA Early to Middle Carboniferous, from 360.7 to 314.6 years ago Blastoids (class Blastoidea) are an extinct type of stemmed echinoderm. Often called sea buds, blastoid fossils look like small hickory nuts. They first appear, along with many other echinoderm classes, in the Ordovician period, and reached their greatest diversity in the Mississippian subperiod of the Carboniferous period. However, blastoids may have originated in the Cambrian. Blastoids persisted until their extinction at the end of Permian, about 250 million years ago. Although never as diverse as their contemporary relatives, the crinoids, blastoids are common fossils, especially in many Mississippian-age rocks. Kingdom: Animalia Phylum: Echinodermata Class: Blastoidea Order: Spiraculata Family: Pentremitidae Genus: Pentremites
  17. Nucleocrinus powelli REIMANN, 1935

    Found as surface float at the bottom of the Windom exposure. Reference: Wilson, K. A. “Field Guide to the Devonian Fossils of New York” (2014). Paleontological Research Institution Special Publication No. 44.
  18. Camptostroma roddyi

    From the album Echinoderm Collection

    Camptostroma roddyi (Hundt, 1939). Kinzer formation, Bonnia-Olenellus Zone, early Cambrian. Found in Lancaster County, Pennsylvania, US. Bought as Ebay purchase. This animal is about 4cm in diametre. An early Cambrian echinoderm that is called a stem echinoderm as it is said that many types of echinoderms arose from this animal. This species is the only animal in the family of its own, Camptostromatoidea.
  19. Thought I would share a few things that I collected during a short trip into the Waccamaw Formation in south eastern North Carolina on Saturday. We only spent about 2 and a half hours at the site but some really nice items were found. First a Melitta cf.M. aclinensis. Usually the sand dollars are found only as isolated pieces at this location, occasionally a whole one is found on matrix that is crushed and broken. However I found this complete unbroken one on matrix and another person found a complete unbroken one without matrix. I have started prepping this one out since the pic, it is coming along nicely. Another Melitta sp. I found. Cannot ID for sure as to species as it is broke, but complete and covered with matrix. Will also prep this one out as much as possible to try to ID to species. Next a block of matrix containing a rare Rhyncholampas sabistonensis echinoid. This is an irregular echinoid from the Pliocene / Pleistocene. I have found pieces of these before(and one today) but this is my first complete one. Even crushed and in poor shape I am happy with the find. Top of the matrix the echinoid itself and the bottom I am going to try and expose as much of this echinoid also. Without making it come apart. Double valve bivalves for the day .......
  20. I found something !

    Hello everyone !. I found this near the same place I found a vertebrae of a whale.I made a search in Google, and I think is a echinoderm fossil.What do you think? Am i absolutely wrong? Salutations!
  21. My boyfriend and I went out to the research pit in Waco today and I found a large urchin. The problem is that it's been crushed, more or less. The mud under it is not fossilized, so it's pretty likely that it will fall apart into lots of little pieces if I handle it too much or try to take off excess mud. I guess I have several questions about this. - Is it worth even trying to save? I was pretty excited to find one this big - it's about 4" in diameter - and after many hours of hunting, never found another one in any condition of any size. I don't expect it to be worth anything monetarily-speaking, but want it just for my own enjoyment. - I've read about a few plastics (I copied the names from another post but now it's not letting me paste them) that others have used for preservation. Any clue as to whether or not it would work in this case? - Has anyone had a fossil in this condition and tried to rescue it? How did it turn out? Thanks in advance. I love how helpful and knowledgeable this community is. Y'all are really great! I've attached a photo to show condition.
  22. 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!
  23. Fossilzed echinoderm spine?

    Hello, found this in northern Puerto Rico - middle to late oligocene limestone. Am I correct on the ID? thank you
  24. echinoderm

    Any help with this would be appreciated.Found in a quarry in Rockford, Illinois. Ordovician Galena group Thanks
  25. Group of Echinocorys gravesii 1

    From the album Haute Normandie - may 2017

    A group of Echinocorys gravesii , an irregular ursin from Les Petites Dalles, Normandy - Cretaceous - Coniacian
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