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  1. So...... let's say I wanted to collect one specimen of each class of echinoderms (yes, the classes are always in flux, I know). Not a great specimen, just some ossicle or fragment easily determinable to be a member of that class for each class. It would be a fun trip around the world going to a set of localities, each of which was the easiest place in the world to find specimens of some particular echinoderm class. Some classes (crinoids, echinoids) seem almost too easy; others (blastoids, cyclocystoids, paracrinoids) are hard in some parts of the world but trivially easy here in eastern Missouri, USA. But more obscure classes of echinoderms (ctenocystoids, cinctans, solutans, stylophorans) seem to be hard to find no matter where you go; for each of these, I'm curious what formation / location would be the *least* hard. So let's start with a weird one: Where in the world is it *least difficult* to find a fossil readily determinable as belonging to an ophiocistioid?
  2. Echinoid Express

    Mellita caroliniana inside a Dinocardium robustum

    From the album: My Echinoid Collection

    Mellita caroliniana inside of a Dinocardium robustum Waccamaw Formation Early Pleistocene (~2.5 Ma) Columbus County, North Carolina, USA Self collected in November, 2023 This is my first "whole" echinoid of the Waccamaw formation, and my third North Carolina species found! This Mellita caroliniana was hiding inside of a matrix-filled Dinocardium robustum also known as the Atlantic Giant Cockle. I discovered it at the last moment before I probably would have accidentally destroyed it, though I was using a less aggressive cleaning method due to a drought in the area. There are a number of other mollusk species in the cockle as well, but I stopped attempting to extract them to keep the matrix stable. The aboral surface is crushed in and the petaloids are a little fractured due to this, with some very small surface pieces missing, but it is still a great specimen! It is currently sitting in a cabinet until I can figure out the best way to preserve it with consolidant, as I am worried it will fall apart if I am not careful. It is likely going to stay in this cockle as well, which I think makes for a good pairing, as well as a demonstration as to how things get buried together in the formation. There is another fragmented specimen in the shell as well, but likely not complete. There is no telling what else is buried in the matrix beneath the sand dollar that I may never unearth; there could be a whole other echinoid under there as far as I know!
  3. From the album: My Echinoid Collection

    Hardouinia mortonis Peedee Formation Maastrichtian Age, Late Cretaceous (~70 Ma) Holden Beach, Brunswick County, North Carolina, USA Self collected in September, 2023 A bit of an unusual find, this Hardouinia mortonis specimen had a significant amount of crystallization occur within the internal cavity, where the sediment settled and left a pocket. It's not too terribly uncommon to find these specimens with a layer fine crystals in these pockets, and I have found a few broken ones with such layers from the area. However, this one stood out because it was mostly intact, and the crystals began to form in what was likely a small crack, which ended up splitting it open over time as they grew. I have been calling it my "geode" echinoid. I am not sure what kind of crystals they are. They are usually very small and grey, forming a "film" over the walls of their cavity. I think it's either a type of quartz, or a type of calcium carbonate. The entire test of this one seems to have a slight degree of mineral replacement to it, mostly noticeable on the oral surface (there is some dense crystal filling the peristome and the features surrounding it).
  4. Echinoid Express

    Diademopsis crinifera Plates

    From the album: My Echinoid Collection

    Diademopsis crinifera Shale Plates Tafelfleins Bed, Posidonia Shale Early Toarcian Age, Early Jurassic (~183 Ma) Holzmaden, Baden-Württemberg, Germany Acquired online, September 2023 A neat couple of black shale plates containing several fragmented specimens of this Early Jurassic echinoid. There are at least 8 notable specimens between the plates, some having associated spines, as well as some smaller test fragments and some loose spines. These urchins are quite small, with the largest ones only being around 1cm (.3937 inches) in diameter.
  5. Echinoid Express

    Periarchus sp.

    From the album: My Echinoid Collection

    Periarchus sp. Castle Hayne Formation Late Eocene (41-33 Ma) Holden Beach, Brunswick County, North Carolina, USA Self collected in September 2023 A highly unexpected but exciting find, I came across this chunk of Castle Hayne material while searching the beach for Cretaceous Hardouinia mortonis specimens. The tide and surf was particularly strong due to an offshore tropical cyclone, which made it difficult to find the Cretaceous echinoids, but was bringing in large stones and other things. As best as I can recall, this is the first Castle Hayne formation material I've seen on Holden Beach. The chunk is fairly hefty, and is at least 30.5 cm (12 inches) long. There are a number of Periarchus fragments in the material, and there is one other visible specimen that is only missing about ten percent of the test. I am unsure of the species due to the periproct being obscured. I have little doubt that there are probably more specimens in the center of the material. The chunk also has numerous bryzoan fossils.
  6. Echinoid Express

    Ova sp.

    From the album: My Echinoid Collection

    Ova sp. Mykolaiv Sands, Fore-Carpathian Depression Middle Miocene (16-11 Ma) Gleboviti Locality, Roztocze Hills, Ivano-Frankivsk Oblast, Ukraine Acquired from online, August 2023 I had previously identified these as Schizaster sp., but I realized a short while later that the larger specimen only has two large gonopores, and while the one in matrix has an incomplete apical disc, it looks as if it may have those same two large gonopores. Therefore I'll consider them Ova sp. for now, the larger one seems to have the complete lateroanal fasciole from what little I can see. These come from the same beds that have plentiful spine-coated Echinocardium leopolitanum. One specimen has some spine preservation on the oral surface, while the other one in matrix has some spines along the anterior edge, as well as seemingly on much of the oral surface as well, based on a small crevice located in the sandstone that exposes some of them.
  7. Echinoid Express

    Echinolampas sp.

    From the album: My Echinoid Collection

    Echinolampas sp. Ternopil Beds, East European Platform(?) Middle Miocene (16-11 Ma) Unknown Oblast, Ukraine Acquired from online, August 23 My source on Ukrainian echinoids had no info on this specimen other than it seemingly came from the Ternopil Beds, and I have not found any reliable source of information online as to what species this could be. The only thing I could find was a mention of a different undescribed specimen of Echinolampas; however, it was very rounded (not unlike the Oligocene Echinolampas aldrichi from North Carolina), and not laterally compressed and elongated like this one. I wonder if this is a different undescribed species from that one. It measures around 6.6 cm (2.6 inches) long, and around 4.4 cm (1.725 inches) wide. The oral surface is depressed slightly inwards towards the peristome. It seems that the oral surface was prepared with vinegar due to a faint smell, although fortunately it doesn't seem to have suffered much acidic damage.
  8. Echinoid Express

    Clypeaster scillae

    From the album: My Echinoid Collection

    Clypeaster scillae Weissenegg Formation Middle Miocene (16-11 Ma) Retznei Quarry, Retznei, Styria, Austria Acquired from a collector during a local trade show, September 2023 While this specimen is ever so slightly crushed, it is also unusually laterally compressed, and the aboral surface is heavily deformed, while the oral surface is mostly normal. Thus, to me it appears to be a pretty pathological specimen.
  9. Echinoid Express

    Weisbordella cubae

    From the album: My Echinoid Collection

    Weisbordella cubae Ocala Limestone Priabonian Age, Late Eocene (37-33 Ma) Ocala, Marion County, Florida, USA Acquired from online, August 2023
  10. Echinoid Express

    Clypeaster gipplandicus

    From the album: My Echinoid Collection

    Clypeaster gipplandicus Bairnsdale Limestone Middle Miocene (16-11 Ma) Nowa Nowa, Victoria, Australia Acquired from a collector during a local trade show, September 2023 This specimen has some nice plate division, but most of the apical disc is missing. This specimen is almost twice the size of my first specimen of this species.
  11. Echinoid Express

    Clypeaster sp.

    From the album: My Echinoid Collection

    Clypeaster sp. Unknown formation Miocene (23-5 Ma) Unknown European Country (Likely Portugal, Spain or Italy) Acquired from online, May 2023 I'm currently investigating where this particular specimen originated from, I'll update if I discover it's origins. (7-14-23)
  12. Echinoid Express

    Salenia schencki Mortality Plate

    From the album: My Echinoid Collection

    Salenia schencki Mortality Plate Keasey Formation, Isocrinus oregonensis Zone Rupelian Age, Early Oligocene (34-27 Ma) Mist, Columbia County, Oregon, USA Acquired from online, August 2023 Most of the specimens are negatives, but a couple of tests are positives. This comes from a layer in the formation where Isocrinus oregonensis crinoids are common.
  13. Echinoid Express

    Psammechinus dubius

    From the album: My Echinoid Collection

    Psammechinus dubius Ternopil Beds, East European Platform Middle Miocene (16-11 Ma) Bliche-Zolote, Chortkiv Raion, Ternopil Oblast, Ukraine Acquired from online, August 2023
  14. Echinoid Express

    Neolaganum durhami

    From the album: My Echinoid Collection

    Neolaganum durhami Ocala Limestone Priabonian Age, Late Eocene (37-33 Ma) Ocala, Marion County, Florida, USA Acquired from online, August 2023
  15. Echinoid Express

    Macraster elegans Assemblage

    From the album: My Echinoid Collection

    Macraster elegans Assemblage Duck Creek Formation Albian Age, Early Cretaceous (102-100 Ma) Grayson County, Texas, USA Acquired from a collector during a local trade show, September 2023
  16. Echinoid Express

    Brissus unicolor

    From the album: My Echinoid Collection

    Brissus unicolor Ternopil Beds, East European Platform Middle Miocene (16-11 Ma) Bliche-Zolote, Chortkiv Raion, Ternopil Oblast, Ukraine Acquired from online, August 2023
  17. Echinoid Express

    Encope tamiamiensis

    From the album: My Echinoid Collection

    Encope tamiamiensis Tamiami Formation Late Miocene to Early Pliocene (11-5 Ma) Sarasota, Sarasota County, Florida, USA Acquired from online, August 2023
  18. Echinoid Express

    Rhyncholampas gouldii

    From the album: My Echinoid Collection

    Rhyncholampas gouldii Ocala Limestone Priabonian Age, Late Eocene (37-33 Ma) Ocala, Marion County, Florida, USA Acquired from online, August 2023
  19. Echinoid Express

    Hardouinia mortonis (Weathered)

    From the album: My Echinoid Collection

    Hardouinia mortonis Peedee Formation Maastrichtian Age, Late Cretaceous (~70 Ma) Holden Beach, Brunswick County, North Carolina, USA Self collected approximately between 2001 and 2005 A forgotten specimen of mine I recently found in a box of old seashells, this is a heavily weathered but mostly complete specimen I found as a young boy. While I've been a fan of fossils for quite some time, I both did not completely know the true nature of these sea urchins around the time, nor did I typically treasure things that had imperfections when I was that young. Now, I can safely say that this is a very special specimen; this may be one of the first fossils, if not the first fossil, I have collected myself. As a sidenote, my younger brother managed to find a nearly perfect specimen sometime between 2007-2010, which was a source of my envy for over a decade until the beach replinishement project!
  20. Echinoid Express

    Echinolampas appendiculata

    From the album: My Echinoid Collection

    Echinolampas appendiculata Castle Hayne Formation Priabonian Age, Late Eocene (37-33 Ma) Castle Hayne, New Hanover County, North Carolina, USA Acquired from online, July 2023 There are trace particles of phosphate in the interambulacral zones, highlighting the plate patterns. It shows up especially well under UV light.
  21. Echinoid Express

    Parascutella gibbercula

    From the album: My Echinoid Collection

    Parascutella gibbercula Ternopil Beds, East European Platform Middle Miocene (16-11 Ma) Stare Porichchya, Kolomyia Raion, Khmelnytskyi Oblast, Ukraine Acquired from online, July 2023 While most of the Parascutella gibbercula I've received come from the Ternopil Oblast, according to my source of them these detailed, "textured" specimens come from the Khmelnytskyi Oblast instead. This is probably my most detailed one I've acquired to date.
  22. Echinoid Express

    Collyrites elliptica

    From the album: My Echinoid Collection

    Collyrites elliptica Unknown Limestone Formation Bathonian Age, Middle Jurassic (168-165 Ma) St. Benin d'Azy, Bourgone-Franche-Comté, France Acquired from online, March 2023
  23. Echinoid Express

    Cyclaster pfenderae

    From the album: My Echinoid Collection

    Cyclaster pfenderae Unknown Formation Maastrichtian Age, Late Cretaceous (~70 Ma) Sakaraha, Atsimo-Andrefana Region, Madagascar Acquired from online, July 2023 Rather unusual for Madagascar specimens, this one has very little to no alteration done to it. I am undecided if it has an extremely light polish or not, but it does at least have a little bit of crack repair. This specimen has a very good residual color pattern to it, definitely the best one I've seen to date. I have seen several online that have had a similar degree of coloration.
  24. Echinoid Express

    Gongrochanus herscheliana

    From the album: My Echinoid Collection

    Gongrochanus herscheliana Kallakurichi Formation Maastrichtian Age, Late Cretaceous (~70 Ma) Arialur, Tamil Nadu, India Acquired from online, July 2023 A fairly uncommon echinoid (and location), it's similarities to Hardouinia piqued my interest in the genus. The test has a rather unusual shape, it vaguely resembles the shape of a hard hat when viewed from the side.
  25. Echinoid Express

    Jacksonaster depressum

    From the album: My Echinoid Collection

    Jacksonaster depressum Unknown Formation Tarantian Age, Late Pleistocene (126,000-11,700 Ka) Hurghada, Egypt Acquired from online, April 2023
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