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Found 379 results

  1. Pentamerid?

    Going through my trip bucket from a June visit up through the Silurian of the Bruce Peninsula, I encountered what I suspect might be pentamerid brachs, but wasn't entirely certain. Each of them average about 4-5 cm. Although the photo does not capture the "shine" well, the black that outlines some of them, including some of the bits, is very high gloss (like obsidian or some forms of tar). These were unlike any of the surrounding Eramosa Fm, so likely an erratic of sorts.
  2. Ostracod?

    I recently collected at an exposure of the Rochester and McKenzie Formations in Maryland. The ostracod typical of these formations is Kloedinella. While I did find a lot of those ostracods, I also found these two fossils. My initial guess is that they are of a different ostracod, Leperditia. I tried to Google to identify if Leperditia can be found in these Formations but I did not have much luck answering that question. What do you all think? Any help is greatly appreciated.
  3. Just got back from a 5 day trip to western NSW where we visited a number of sites, some of which we had not visited before. Will post more photos and information over the next few days as I have a lot to photograph, but here are some field shots from day two (our first collecting day)... Our first site was located near Grenfell and is known for its excellent Devonian fish fauna, including placoderms and sarcopterygians. While not as well preserved as the nearby Canowindra site, these are collectable which is a start . We were only given a vague site on a hillside located on private property, so once we had permission to access the site the next issue was finding where the fossil bearing layers were. This involved climbing a very steep hill and breaking open any rocks we saw, and after finding evidence of placoderm plates the next task was to figure out where they originated. A number of fossil bearing layers were found and it seems the material is very extensively distributed, presumably occurring throughout the surrounding hills as well. Here are some photos of one rock face we worked and the terrain - There were a number of rocks with exposed fossils on them, for example this one which is covered in ornamentation from placoderm plates. And here is a field photo of a partial Sarcopterygian(?) jaw, my thumb is on the left for scale.
  4. Silurian Trilobite Help

    I recently collected in the Rose Hill Formation in West Virginia. I found a lot of small trilobite pieces and a couple brachiopod and pelecypod fossils. I am having some trouble figuring out what these two fossils are. Any help would be greatly appreciated. Please let me know if you need any additional photos. #1- the piece at the bottom of the photo measures about 0.5 cm tall and 1 cm wide. I found a similar looking fossil below. No clue what it could be... #2- the pygidium measures about 1 cm tall and 1.3 cm wide.
  5. Hello! I was wondering if you guys could help me ID this fossil. I found it in the Waldron Shale (Middle Silurian) collecting piles that the Falls of the Ohio State Park (SE Indiana) sets out for guests to rummage through (they get their shale piles from the Sellersburg Quarry, Sellersburg IN, Clark Co). I wasn't sure if it is part of a crinoid, burrows, or some sort of frond-type bryozoan or coral. I have August F. Foerste's Silurian Fauna of KY document but didn't see anything in his figures that caught my eye. The ruler in my photo shows the centimeter side. The true color of the shale is more blue-gray but I have a desk lamp with a warm white bulb on it which is giving the pic a false yellowish hue. Thanks in advance for your help and expertise.
  6. Taphonomy question

    I'm curious what may have caused this burrow-like hole in dalmanitid eye? The eye popped off while I was prepping it availing a look inside. Microbes, worms, decay?
  7. This rock has me puzzled. The sides look like they might be the laminae of a stromatoporoid. The top of the rock though, lacks any trace of mamelons and the wavy lines between them that I typically see on stromatoporoids. Instead the rock is full of Cheerios ;-). So I'm wondering if this is something totally different. Maybe geological? Oddly preserved oolites? But then, what are the layers visible on all the rock's sides? Dimension: 1.5" long. TIA to all! Detail of top: Side:
  8. A few ID's

    Just wondering if anyone may have any idea as to what these are, found today in Wenlock Edge, which is majorly silurian limestone. The first five are all of the same piece. Secondly - longshot, but could tis be a tooth? And lastly, is the small spiral, a sort of Gastropod? TIA
  9. It's been a long while since I've posted on here. I haven't been able to collect much lately, but I recently went out to some new haunts and came back with some pretty intriguing stuff I'll hopefully get to follow up on later. I'll start off with an interesting discovery I've had recently. The outcrop exposes rocks stretching from the upper(?) Brallier Formation to the middle(?) Foreknobs Formation. Although I tried searching in the past for brittle star trace fossils, I was mostly unsuccessful in this regard, and over time my interest in it shifted to the much more fossiliferous beds of the Foreknobs (formerly Chemung) Formation. A couple of years ago I posted about finding a fish bone in a boulder next to the outcrop, as well as pointing out I found some potential teeth. Going over my posts, that finding intrigued me so I dug deeper into the presence (or lack thereof) of fish remains in the upper Devonian strata of the region. What I came up with was an 1887 report of the Genesee Shale from New York, an upper Devonian formation roughly analogous to the Scherr (and possibly the lower Foreknobs by the sound of it, it's all rather ambiguous) in Maryland. The authors noted multiple occurrences of fish bones and isolated teeth in sandstone and "fine pebble conglomerate"...similar in description to the rocks of my own outcrop. Coupled with the knowledge of possible fish remains I found previously I decided it'd be worth it to give the outcrop a more thorough look over, this time concentrating instead on the conglomerate facies and ignoring the shale. What I discovered has so far been fairly interesting. As I stated previously the outcrop exposes parts of the Brallier and Foreknobs Formations, including several dozen feet of shale and siltstone in the Foreknobs grading into upper siltstone and sandstone beds closer to the axis of the syncline. Towards the top of the exposed section of the Foreknobs is a bed several inches thick of hard, pebbly conglomerate. After some searching the silty shale above and below the bed is mostly unfossiliferous, although local profusions in brachiopods, crinoids, and other creatures are present. The conglomerate, however, is densely fossiliferous to the point that it forms a veritable coquina in parts running for several feet along the exposure. Because the conglomerate is so hard (made up of quartzose pebbles and sand), and the underlying and overlying beds made of much softer shale and silty rock, the conglomerate is poorly exposed outside of the exposure wall, forming something of a canopy between it and the less resistant layers. It is covered in part by a dense layer of talus from the overlying beds, likewise obscuring part of the exposure. Luckily, however, a few boulders have eroded out from the cut and are free on the ground to examine, and a few loose pieces weathered from the boulders are present around those. In these rocks I have found one chunk of blueish-white fish bone(?), and several possible tooth fragments. I recently examined the outcrop wall looking for more bone/teeth still present in the outcrop, and discovered part of a fish tooth(?) exposed slightly above one of the boulders, and similar looking black enamel(?) specks that could be fish derivatives. They are distinguished from the quartz pebbles by their shiny black appearance, whereas the quartz is mostly lighter gray and translucent. Is this a possible bone bed in the Foreknobs Formation? More scouting is of course needed, but there's a strong possibility in my opinion that, at the minimum, this conglomerate layer is a decent source of fragmentary Devonian fish remains. Note the blueish tint to the fossil. This possible bone fragment was found in a boulder of quartzose, pebbly conglomerate in the middle-upper Foreknobs Formation (Famennian). Note the associated fauna of crinoid and brachiopod fragments. Crinoid stem fragments in particular are extremely common, comprising a large part of the conglomerate "pebbles." This boulder is derived from a layer above a Cyrtospirifer disjunctus bearing shale, indicating it's Chemung age.
  10. Fossils and Breakfast in Chattanooga?

    So I have heard on multiple occasions of a silurian outcrop that happens to be by a waffle house somewhere around Chattanooga TN. Would anyone happen to know where it is so I can relieve my long-unscratched fossil itch and take a (responsible) look? PM me if you'd like. Thanks!
  11. Scientists find oldest fossil of a land animal Millipede-like creature lived in Scotland 425 million years ago, Thomson Reuters, Jun 01, 2020 https://www.cbc.ca/news/technology/oldest-land-animal-1.5592917 M. E. Brookfield , E. J. Catlos & S. E. Suarez, 2020, Myriapod divergence times differ between molecular clock and fossil evidence: U/Pb zircon ages of the earliest fossil millipede-bearing sediments and their significance, Historical Biology Received 26 Feb 2020, Accepted 27 Apr 2020, Published online: 15 May 2020 https://www.researchgate.net/publication/341358567_Historical_Biology_Myriapod_divergence_times_differ_between_molecular_clock_and_fossil_evidence_UPb_zircon_ages_of_the_earliest_fossil_millipede-bearing_sediments_and_their_significance_Myriapod_diver https://www.researchgate.net/publication/341420627_Myriapod_divergence_times_differ_between_molecular_clock_and_fossil_evidence_UPb_zircon_ages_of_the_earliest_fossil_millipede-bearing_sediments_and_their_significance https://www.researchgate.net/profile/Elizabeth_Catlos https://www.tandfonline.com/doi/abs/10.1080/08912963.2020.1762593?journalCode=ghbi20 Yours, Paul H.
  12. A rare find

    Made a trip last week to try my luck at a local Wenlockian spot. It's the type of locality where you must suffer and work hard to find good fossils and sometimes leave empty handed. A good stress reducer. Prep Illaenoides triloba, measures 5cm Thanks for looking and stay safe during these troubled times.
  13. Sponge? Anemone?

    Found this peculiar pattern on a rock containing other fossils from Northern Illinois, from the Silurian period best I can figure. Haven’t seen the like before. Anyone know what it might be?
  14. Unknown Coral

    Found in SE Michigan, but likely moved there by man as it was in my mothers new condo flower garden. Approximately the size of a grapefruit. Spheroid with a mushroom shape with the bottom "stem" area not having any of the corallite tubes. Originally thought it was a Petoskey stone, but after cleaning it up (hosing the mud off it) I cannot see any separation between the tubes, and I have never seen a Petoskey with such far separation of the openings and without a very clear hex shape. Matter of fact, I cannot see any joint between the openings at all. The other types of corals from the area I am familiar with (horn, Charlevoix, and chain corals) it is clearly not one of them. Any help at an ID would be appreciated. Will try to post a couple other pic's below, hit the size limit with this post.
  15. Bryozoan ID

    Any help with identification of the following attached Bryozoans would be greatly appreciated. 001: Collected from Bungonia NSW Australia and is Upper Silurian in age. 002: Collected from Bowning NSW Australia and is Upper Silurian in age. (possibly a Penniretepora sp.) 003: Collected from Bowning NSW Australia and is Upper Silurian in age. and again, thank you for any help given.
  16. Silurian trilobite, Kankakee Illinois

    Found outside of Vulcan quarry in Kankakee Illinois. Is this a CHERIRURUS NIAGARANSIS? Or a mother type trilobite from Silurian period my area is Silurian for a fact that I know.
  17. Lichid

    Hi, need help with this Id, Sugar run formation, IL. Any help appreciated. Measures about 2cm either direction.
  18. I found all the crinoids below at Lake Michigan beaches in Illinois. (Silurian, Racine formation) I have to admit, I used to not pay too much attention to the ubiquitous crinoids on my hash rocks. That is, until I started to look at them with a clip-onto-the-phone microscope. I quickly found that crinoid disks aren't all the same and are actually quite beautiful and intriguing. Also, finding a pretty little crinoid calyx at the beach got me to look for more like it and low and behold, a short time later, I did find another one. I do believe they are very rarely found at Lake Michigan beaches, unlike the ubiquitous petoskey stones or honeycomb corals. So I've been trying to research Silurian crinoids from this formation, alas with very little success. Oh, for the lucky people who find Devonian crinoids, bibles have been written about those, I'm so jealous! So I'm turning to TFF once more to hopefully find additional information. Is anyone here familiar with Silurian crinoids from the Wenlock epoch? Is it possible to narrow down ID of at least some of these even though I don't have a single stalk or stem segment with the calyx and vice versa. # 1: Maybe a Crotalocrinites or similar? I'd love to know what its calyx looks like. Love the flower shaped lumen, it's so pretty! For comparison, this is a pic of Silurian Crotalocrinites from the British Geological Survey: I'm not 100% sure that they occur in the Racine formation though. Also, the lumen takes up more space within the disk than the lumen on my specimen above. Otherwise the flower shape seems a perfect fit, but hard to tell if the crenolae under the dolomite glaze on my piece are as fine and tightly spaced. Maybe a it's a close relative? #2: I haven't found a single image or description of a crinoid stem that looks like a perfect medieval tower. Anyone here that's familiar with such patterned crinoid stems? (Love the Danish pastry look on its top and bottom too) #3: I assume this poor crinoid was parasitized by some other live form? I know that brachiopods have been found attached to crinoid stems, as illustrated on Chicago's Field Museum work-in-progress website. But I don't think that's what happened to this one. What could have caused such extensive damage? #4: I think this one does have a cirri scar on its left side below. Detail of what I think is the scar in the 2nd pic. The following stem disks are all microscopic in size, less than 5mm: #5: I hope the lovely star-shaped lumen might make it identifiable. #6: Same as for the above, the ship's wheel lumen surely should help with ID? #7: Another Crotalocrinites or similar? Flower shape seems a bit different though, assymetrical. #8: I've found quite a bit of literature about star shaped jurassic crinoid columnals/ossicles, but nothing about Silurian ones. This one, sitting in limestone actually has the widest diameter of all columnals in my collection. Ø = 1.5cm. #9: First calyx. I think this one is very nicely preserved. Ø1cm and height: 1cm. Is it possible to narrow down its ID, despite missing the stem and arms? Also, in most images of crinoid calyces, the brachials visibly grow out of the side of the calyx. Not so with this one. Would they have grown out of the top side by side with its mouth and anus? #10: Second calyx. It's a bit larger, about 2cm wide and 1.5cm tall. Not sure what its original shape used to be, as it's been tumbled and worn and seems to be missing parts on its side. The top is hidden in matrix.
  19. Would anyone know if ADAM's SILURIAN collection is still available to view please on TFF.
  20. Mortality hash plate

    Just found today in my back yard. First daylight in 430 million years. It was found about two metres down. We are working on a house project. I just washed it off in the kitchen sink. My question is what would you do next? I have been thinking about prep work in general, I like it, should I just enjoy it as it is?
  21. Calyx ?

    Found on the icy shore of Moosehead Lake, at the end of a rope dropped over an unstable ledge of The Forks formation turbidite. It's in rough shape, but would it be reasonable to call it a crinoid calyx ?
  22. Hi All, I'm new here and honestly have only a small working knowledge of Geology and fossils but I'm interested in learning. I live in and interesting area I think, Western New York. Lockport, NY to be specific and along the upper portion of the Niagara Escarpment, I have to be at least 3/4 of the way up the rise of the escarpment, I can see to Lake Ontario from my property. In this area around me, stone wall used to be a big thing and they run through the woods for miles sometimes, build back in the 1800s after the Erie Canal and marked property lines and I assume was also a good way of clearing the rock from the fields. These rocks around me that are a softer more layered rock are just loaded with fossils but mostly small shells and what looks like some small crinoid type pieces. I have been studying up and trying to research what rock I predominantly here and I think I've narrowed it down. I would just like some input on what you believe this predominant rock type is, what these shells would be, age, and what else you think could be found in these rocks if I spent significantly more time breaking open lol. I will attach an imagine of approx. where these rocks are (blue dot circled in red) and the corresponding layer that this would be. If I've narrowed this down accurately, this would be the Lower Silurian (Sik) and possibly be "Irondiquoit Limestone, Rockway Dolostone, Hickory Corners Limestone, Neahga Shale, Kodak Sandstone" I will then try to add some pictures of this stone/rock type and the shells i found and cleaned some in vinegar. really appreciate your input and knowledge on what rock this really is, what the fossils are and age range so I can research what else might be able to be found in these rocks.
  23. Hi all,I'd appreciate your help with this Silurian Lake Michigan fossil from the Racine formation. I've done some research and found a family of Silurian colonial horn corals that have members which do look very much like my find. It's the Arachnophyllidae family. I'm not sure if they occur in the Racine formation though. Are these badly preserved stromatoporoid mamelons next to the horn coral? The rugose coral is growing on a stromatoporoid reef? Calyce detail: Here is a North American Silurian colonial coral that looks similar. It's Arachnophyllum kayi. Found it in a USGS report about silurian horn corals. So now, to the "bumps". Mamelons of stromatoporoids? Thanks so much to everyone for your thoughts and input.
  24. Looking into going up to the Shawangunk formation near the Delaware River gap, looking for any fossils but would most like to find a eurypterid. My problem is I can’t find exactly where the fossiliferous parts are. I know it’s a long shot but has anyone hunted this formation before.
  25. Crinoid calyces?

    I would love your opinions on these Lake Michigan, IL beach finds. Am I correct in thinking that these are crinoid calyces? As always, thanks so much for your input. A Hash rock with a terribly worn crinoid but with the outline of its calyx visible? The cup shaped (bottom part only?) of a crinoid calyx? Upside down view. Ca. 1cm wide View of the bottom Top view: Plate from the IL Geological Survey: Or something like this silurian crinoid "Sagneocrinites Expansus":