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  1. Misha

    Waldron Shale crinoid

    From the album: Misha's Silurian

    Plate from the Waldron Shale containing a crinoid calyx, rhynchonellid brachiopods and a gastropod possibly Strophostylus sp.? Middle Silurian Waldron Shale Waldron, Indiana
  2. Hello, I don't usually make separate posts to show off individual fossils, but I had to make an exception because this one is very special. It is a near-complete crown of a crinoid known as Macrostylocrinus striatus from the Silurian Waldron Shale of Shelby Co. Indiana, USA. I didn't really know what it was until I had it prepped and identified by experienced collectors. Though small (2 cm) and seemingly unassuming, this fossil is exceptional because as far as I know and am told, no crown of this species has ever been found from the Waldron Shale. Until now this crinoid has only been found from this locality as armless calyxes, and even then fairly rarely. So this specimen would be the first and so far the only Waldron Shale Macrostylocrinus striatus crown in existence. I would call it a very rare fossil, but really a more appropriate descriptor might be "one-of-a-kind". Of course, one can never be 100% certain, as there is no telling what material is sitting in old collections. In any case, there is no doubt that this is an important specimen.
  3. Sauropod19

    Calymene preparation

    I volunteer at a museum prepping some Waldron Shale material and was particularly proud of this Calymene. Thanks for looking! —————————————————————
  4. Misha

    3 Waldron Shale Brachiopods

    Hello everyone, I recently purchased this plate of brachiopods and bryozoa from the Waldron Shale in Indiana. I received a label with it but to me, the IDs on there do not seem right, so I wanted to ask here for your opinions. Here is the whole piece: I'll start with the ones I think I have identified. First, the brachiopod on the left in these photos: I think this is a Dictyonella reticularia due to the overall shape and the surface ornamentation which looks close to the specimens I have seen in my research. This was the only species listed in a list of fauna I found from the Waldron shale although other sources have other species from this genus. Originally it was labeled as Meristina nitida. Next, the small pyritized shell: Originally this one was labeled Orthis hybrida, that did not look right to me at all, I did a bit of searching and am now wondering if this could be Resserella sp.? not sure which species though. And finally the ones I am most confused about, the multiple bumpy shells: I think it is pretty clear these are Atrypids, they were labeled Atrypa reticularis by the seller. I have many brachiopods from this genus and species but have never seen any with such prominent shell ornamentation. I tried digging though fauna lists and other resources but other than that species I haven't found much. Does anyone know what this one might be, and if my other IDs are accurate? Any help is greatly appreciated. Thank you for taking a look, Misha
  5. Misha

    Waldron Shale, Sponge?

    Hello everyone, Recently I was kindly sent some fossils by @connorp from the Waldron Shale in St. Paul Indiana. One of these fossils was a piece of matrix which ended up separating due to some cracks, this revealed an interesting specimen that I am not too sure about the ID of. It is round, with rough surface texture and some fine patterns visible under magnification. To me, this appeared very similar to Lower Devonian Hindia sp. sponges I've found in NY, so I thought maybe it belonged to that genus. Looking into it the only sponge genus I can find from the Waldron is Astylospongia, and the specimens of this genus I've seen online look quite different from this example as although they're also round, but they appear to have different surface patterns and and an indentation on one side which I do not see here. I was wondering does anyone know what this may be? Is it a sponge like Hindia, a different species or preservation of Astylospongia or maybe not a sponge at all? Thank you for looking, and for any help. It is really appreciated. Misha
  6. Sauropod19

    Waldron Shale Bryozoan

    Hello. I was looking at one of my old Waldron Shale hash plates and noticed a round piece seemingly connected to a Bryozoan colony and was wondering if it was the “stem” of the colony, for lack of a better word, or just a coincidentally similar piece on the bottom side of the plate. It also a smaller piece attached to the side that I assume is part of the same column but wanted to ensure it wasn’t an epibiont. Thank you!
  7. Misha

    Lingula gibbosa

    From the album: Misha's Silurian

    Lingula gibbosa Middle Silurian Waldron Shale Waldron, Indiana
  8. Misha

    Waldron Shale brachiopod plate

    From the album: Misha's Silurian

    Plate containing three species of brachiopods from the Waldron Shale. Atrypa reticularis, Dictyonella reticulata, Resserella waldronensis Mid Silurian Waldron Shale Waldron, Indiana
  9. From the album: Misha's Silurian

    Stegerhynchus sp.? Middle Siluran Waldron Shale Waldron Indiana
  10. Misha

    Pyritized chonetid brachiopod

    From the album: Misha's Silurian

    Strophochonetes novascotica Middle Silurian Waldron Shale Waldron, Indiana
  11. From the album: Misha's Silurian

    Stegerhynchus neglecta Middle Siluran Waldron Shale Waldron Indiana
  12. ClearLake

    Waldron Crinoid and Brachiopod

    A while back I made a quick stop at a small exposure of the Waldron Shale (Silurian) in southern Indiana. I only picked up a couple of items but since I have not previously collected the Waldron, I wanted to confirm (or get the correct ID) on two small items. I'm hoping one of our Waldron experts such as @Herb, @Ken K, @crinus or @squalicorax or anyone else that has some Waldron knowledge can help me out. The first item is a small, nicely preserved brachiopod. Based on what I could find, I suspect it might be a Stegorhynchus but I wanted to confirm this and if anyone can add a species, that would be awesome. Alternately, if you have a good suggestion for reference material for Waldron brachiopods, I'd love to know it and would be happy to read up some more. The black bar in each picture is 1 cm. This little guy is 1.2cm wide, 1.1 cm long and 0.75 cm high. The second item is a crinoid holdfast with a very obvious pentastellate lumen. Its also hard to see in the picture (due to some matrix and some pyrite growth) but under the microscope, you can see that the articular surface has crenulae that extend from the outer edge all the way to the lumen. I can also see in edge view that the individual columnals are very thin. Again, the scale bar divisions are 1 cm. I know that Eucalyptocrinus is a common genus in the Waldron, but from what I can find, it does not have a pentastellate lumen, but admittedly most of the pictures I see of it do not show the columnal cross sections. I'm hoping one of our members is more familiar with this genus that I am (not too hard to do) and can confirm that for me. In looking through Moore and Jeffords (1968) CLASSIFICATION AND NOMENCLATURE OF FOSSIL CRINOIDS BASED ON STUDIES OF DISSOCIATED PARTS OF THEIR COLUMNS, I see they have a species identified as Cyclochorax fasciatus that fits the description (and age and formation) of my specimen (see #7 and 8 in the snippet below from their Plate 23) but after a quick search, the only reference I see for this genus is Moore and Jeffords. I'm wondering if anyone is familiar with what a calyx of this genus looks like or if anyone has knowledge of some other existing Waldron crinoid that has this columnal pattern. Look forward to any and all responses and any help that can be offered. Thanks Mike
  13. Herb

    Eucalyptocrinites Calyx

    This is a Crania sp. inarticulate brachiopod attached to a Eucalyptocrinites sp. calyx from the Silurian Waldron Shale from central Indiana. The calyx is 2 1/4" (5 cm) across. The brachiopod is about 3/4" across.(2cm). The blue circled item is a single element bryozoan, like the ones found in the lower Devonian Birdsong formation of central Tennessee.
  14. Tidgy's Dad

    Waldron Crinoid

    In the little bits of matrix I have from the Waldron Shale of the Illinois Basin of SW Indiana, I have recently found this specimen. I'm fairly sure it's a crinoid, may even be two or three in this piece, a sort of mini mortality plate. Anyone have any idea which genus of crinoid it could be please? A second calyx to the upper right of the first, perhaps? This looks like another calyx, located just under the first but aligned in the same direction :
  15. Tidgy's Dad

    Waldron Tentaculites?

    I love this specimen. I though it might be Tentaculites at first, but I can find little reference to them in the Waldron Shale other than really old mentions of T. inornatus and T. niagarensis from the Rochester Shale of New York which is of about the same age and has many species that also occur in the Waldron. However, it may actually be a really weird bit of echinoderm stalk. It's very tiny and I'm not sure if it tapers or not as the matrix covers part of it and is stubbornly refusing to come off. It seems to be solid rather than hollow. Or maybe not. The shell may have come off a part of this to reveal calcite infilling of the interior? Any ideas, anyone?
  16. Tidgy's Dad

    Waldron Weirdie #3

    I have found quite a lot of curved, calcite plates in my samples. Some are loose and others in the matrix from my Waldron Shale, S.W. Indiana samples. They are often quite plain and I was thinking athyrid, but the athyrids in the Waldron Shale seem to have rather thin shells and these are quite thick and chunky. I still think athyrid is most likely. Other, quite similar bits seem to have tubercles or spine bases on them. Trilobits? Echinoderm? Another lumpy one : Or be shaped like an echinoderm plate? The reverse : Any help greatly appreciated as always. Thank you looking! @Peat Burns Someone mentioned that you know a bit about the Waldron? Any input, please, Tony, old chap? Or the brachiopods from this formation, I'm drowning in the dark here.
  17. Tidgy's Dad

    Waldron Weirdie #2

    Another mystery from the Waldron Shale of the Illinois Basin in Indiana. Any help or suggestions most gratefully received. The object appears to be hollow and sort of tubular. Scale is in mm. so it's pretty small.. Thank you.
  18. squalicorax

    St Paul Indiana

    Got a chance to collect in the St Paul Stone Quarry in St. Paul Indiana. The quarry is silurian aged waldron shale here we are waiting at the gates The quarry is mined for dolomite and the uneconomical waldron shale needs to be cleared away. We were driven to a particular area to collect at. They had dumped piles and piles of shale on the ground with fossils weathering out everywhere. Heres me after the long day of collecting I forgot to take in situ pics because I was so overwhelmed with the fossils. here are some of my finds My best Eucalyptocrinus crassus calyx A Eucalyptocrinites elrodi calyx Unknown Calyx Calymene Trilobites Dalmanities Brachiopods Leptaena Unicinulus stricklandi Fardenia subplana Eospirifer radiatus Platyostoma Decachisma blastoid which made the regulars very upset because it was my first time collecting there. Sponges Favosite coral balls. bigger ones around an inch or two
  19. Hello FF! I’ve recently taken home some neat fossils from the Waldron Shale in southern Indiana. I’m new to taking fossil collecting seriously, and thus have little experience in trying to properly prep them. For some, the surrounding matrix often crumbles when I take so much as a dental pick to them, though a toothbrush and soapy water hardly yield results after scrubbing for a while. For others, I can hardly get anything to work (such as the large trilobite mold below). The tools I have present are a dental pick, a toothbrush, water (and dish detergent), a small chisel, a hammer, and a jug of muriatic acid, though I have read the muriatic acid should be used as more of a last resort. I just don’t know if I’m doing the methods I’m currently using wrong (likely), or if I need new methods altogether. For the trilobite mold, I’ve been scrubbing and dental picking for 2 hours with little to show, so perhaps I should alter my methods. Lastly, I plan on purchasing an air scribe in the near future, so is that something I should get before working on these further? Thank you kindly for your time and help!
  20. Tidgy's Dad

    Waldron Weirdie #1

    Hello, friends! If anyone can help to id this little spiny spine from the Waldron Shale of Indiana, I would be very grateful indeed. Sorry about the first pic, it's just to give a scale. The object in question is less than a mm wide at the 'base' and about 2 mm in length. It seems to be a spine with tubercles and is solid, not hollow. The picture below shows it better. Tubercles, which seem to be hollow as some are broken off. You can see quite a bit if you magnify the image : Is it a bryozoan? Where the tubercles are snapped off actually being zooecia? Or a trilobit? Any alternative suggestions also would be welcome. Thank you. Life's Good! Adam.
  21. Raggedy Man

    Bryozoa?

    I split some blocks of shale from St.Paul Indiana I collected last October and I found this. I was thinking bryozoa. It is 2 inches long and 1/2 inch wide. Waldron shale- silurian
  22. Hey Folks, I specialize in the Middle Silurian Waldron Shale formation. However, I have many other North American Paleozoic invertebrates from many classic sites. I would be happy to exchange this material for any good Waldron Shale fossils, prepared or unprepared. I'm located in Ohio. Drop me a line and let me know what you have and what taxa you may be interested in. Look forward to hearing from you. Note: If you would like to exchange Waldron material you have for Waldron fossils I have...we can do that. For instance, if you have unprepared Waldron fossils I can exchange prepared material from my collection for your unprepared fossils.
  23. I received some Waldron Shale trilos for prep today. As always I made a brief examination of the matrix in search of any other fossils. I came across these, that I think may be cross sections of bugs? I should clarify that I have 0 experience with such cross sections. If they were, I'd assume the smaller one is the standard C. breviceps but the larger is curious. It's about 1.75 in/4.5 cm across and appears to have tubercles. What do you guys think, am I way off base or have I found something interesting?
  24. Have been under the radar a bit here on the forum, but plan to get more involved. Talk about involved!...the specimen featured here has been sitting in my shop for a number of years. As I prepared numerous Waldron specimens from my huge stock of unprepared material, I kept thinking and planning the preparation of this piece. This specimen was collected from the Middle Silurian Waldron Shale Shelby County, Indiana. The crinoid was found on the floor of a bench of Waldron Shale with only the very top of the crown exposed. So, the crinoid was in situ. From what was exposed I could see that the inner arms were missing. I could see two support arms with no inner arms. Being quite familiar with the Waldron, this is to be expected in many cases. The high energy of the Waldron environment caused the toppled specimen to be "re-worked" by currents thus uncovering the crown and allowing for the inner arms to disarticulate from the specimen. So, I cut the piece out with my rock saw from the exposure floor and brought it back to my lab. The specimen broke prior to removal about 2/3 of the way down from the crown so I could see the cross section of stem so knew approximately how long the stem was. The stems get smaller diameter as they move away from the crown. Firstly I glued the two pieces back together with 5 minute Epoxy. I then pulled a thin piece of Waldron Shale from my stock (I keep nice thin, clean pieces of shale I come across when collected to back specimen), carved out a depression the size of the exposed calyx andf then glued the thin piece of shale right over the crinoid slab. I then cut the piece I glued on to the same dimension as the original slab...still with me? Lol. Now comes the INVOLVED part I was referring to at the beginning! I had already marked on the back side of the now sandwiched crinoid approximately where the crown was. I then proceeded to prepare the specimen from the other side, which was the downside of the original toppled specimen. This side would likely have remained buried and thus fully articulated...I hoped!...Once I carefully found the crown, I prepared it first and as predicted it was wonderfully intact save for half of one inner arm...Hey, I'll take it. What followed can only be imagined by looking at the picture featured below. Hours and hours of work exposing the crown and stem with an ever watchful eye for additional taxa, very often associated with stems of the Waldron Crinoids as secondary tier inhabitants. The most common are the Rhynchonellid Brachiopods, note how the pedicle of the brachs are facing the stem. A couple of small gastropods and bryozoans round out the additional taxa exposed thus far. Specimen measures just shy of 12 inches long with the stem (rule is 15 cm.) Note the multiple scribe marks. The specimen was exposed initially over 1.5 cm below the surface. The marks are where I'm leveling out the surrounding matrix so the specimen doesn't sit in a trench. This will all be painstakingly smoothed out and contoured. Also, note the crack line through the stem towards the bottom. Close up view of the business end of the crinoid. Despite what it looks like now, this will be a beautiful specimen once completed. I will keep you updated on the progress.
  25. Ruger9a

    Crinoid verification please

    Good morning. In the process of prepping/detailing this calyx I have misplaced some of the documentation. I know the crinoid is from the Waldron shale, Niagaran series in Waldron Indiana. Original purchase date was 1982. I have lost the actual name of the species, help please.
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