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Found 354 results

  1. Stromatolite? Found in Silurian reef. Thanks for any help..
  2. Stromatoporoid or coral?

    This was found in a Silurian reef, IL. Any idea if this is a stromatoporoid or coral?
  3. Hello everyone. As usual, I need your help with one of my finds. It seems this small rugose coral has a buddy. At first I thought the the tiny "bump" was just a bit of debris sitting on top of the coral. But now that it's enlarged, it looks to me somewhat similar to a crinoid. I'm not really sure though, I've never seen a crinoid preserved anything like this. Surely it's not part of the horn coral itself, or is it? Thanks to all for your input. Detail:
  4. Waldron Dalmanitids

    I have two Dalmanitid species from the Waldron shale. I know the three on right side are Glyptambon verrucosus. What species is on the left?
  5. NOhlMunneck Reconstructing time and diagenesis of limestone-marl alternations from the selective compaction of colonies of the tabulate coral Halysites Theresa Nohl & Axel Munnecke Bulletin of Geosciences 94(3), 279–298 size:about 21 MB recommended
  6. Local Silurian

    Yesterday I decided to make a quick trip before the Illinois stay at home order took place. For the past 4 years I've been trying to find all 16 of the trilobite taxa in the Sugar Run formation. So far I've found 12. The lichids are eluding me, except for a partial Trochurus welleri found last year. Here is what I think is a lichid fragment (?) Dalmanities illinoisensis pygidium continued...
  7. Silurian coral from Gotland

    last summer I went to Gotland, Sweden, which is famous for Silurian sea life: there are some cliff by the west side of Gotland, and i found a lot of coral fossil there first one i found seems to be Planalveolites fougti and then stromatoporoids then Heliolites also Favosites also some Tetracoralla: and pieces of Crinoidea: and some other stuff: When I look at these fossil, I actually felt went back to Silurian, quite amazing (the picture has watermark because i posted it on another forum first)
  8. Wrens nest dudley

    Was out to Birmingham to drop off friend at the airport. Flights were cancelled so decided to go fossil hunting at wrens nest in dudley.
  9. From the album Silurian Graptolite

    Silurian graptolite Monograptus Elton Beds Wenlock Edge Shropshire UK
  10. Cheirurid ID

    Would this specimen be described as Cheirurus cf. niagarensis, or Ceraurus hydei, Weller? Sugar Run formation.
  11. Help request! I am putting together a tool for judging rock age based on very crude, whole-rock, hand-sample observations of fossil faunas/floras -- the types of observations a child or beginner could successfully make. I view this as a complement to the very fine, species-level identifications commonly employed as index fossils for individual stages, biozones, etc. Attached is what I've got so far, but I can clearly use help with corals, mollusks, plants, vertebrates, ichnofossils, and the post-Paleozoic In the attached file, vibrant orange indicates times in earth history to commonly observe the item of interest; paler orange indicates times in earth history to less commonly observe the item of interest. White indicates very little to no practical probability of observing the item of interest. Please keep in mind that the listed indicators are things like “conspicuous horn corals,” purposefully declining to address rare encounters with groups of low preservation potential, low recognizability, etc. Got additions/amendments, especially for the groups mentioned above? Toss them in the comments below! Thank you..... https://docs.google.com/spreadsheets/d/1tVm_u6v573V4NACrdebb_1OsBEAz60dS1m4pCTckgyA
  12. EDIT: Current 2020 Running Tally of Ontario Bugs Acanthopyge contusa Anchiopsis anchiops Coronura aspectans Crassiproetus crassimarginatus Echinolichas sp. cf. eriopis Echinolichas sp. cf. hispidus Mystrocephala stummi Odontocephalus sp. Pseudodechenella sp. Trypaulites erinus I'll be parking all my trilobite hunts for the year in this thread. With winter ending much sooner than we are accustomed to up here, it's about time to get back into the hammer-swing of things. This year is an ambitious one, no less on account of having spent some quality time with old literature, maps (new and old), to plot out a series of areas to prospect all across the province. A significant amount of fieldwork is planned as part of a broader research project. This past weekend was the season opener for me, with temperatures hitting about 4 Celsius on Saturday, and near 12 Celsius on the Sunday. By now, almost all the snow has burned off, with just a few shadier spots remaining. This is the view as I set out through the bush around sunrise. The ground was still frozen, which was fine as it made trekking over mud much easier.
  13. Please help me to identify these two fossils. When I picked up these rocks, I thought I had found corals, but now, looking at them from all sides, I'm stumped. What throws me, is that the pattern on each of the two fossils looks the same all around the rock. No vertical structure or growth pattern, anywhere. So even if these are just broken off pieces of a much larger fossil, corals still would show vertical structures on the sides, right? But no "sides" are visible here. Confusing. Thanks so much in advance for taking the time to share your knowledge. #1: Dimensions: width is 2.2cm; height is 3cm, the individual circles vary quite a bit from <0.5mm to >1mm. Detail: #2: I wouldn't mind if this one is geological, as I collect more purely geological rocks than I do fossils, but I don't think this one is just geological. Dimensions: width: 3.5cm; height: 2cm; individual "dots": max 1mm
  14. I picked up this jasper for its banding. Only later, when checking the rock through my hand lense did I discover what I think are a bunch of little rugose colonial corallites at the top and bottom of this rock. If these are indeed corals, all but one lack most detail in the center. If septa are faintly visible, they look differently preserved than on any of my other coral specimens. Mostly it's just circle after circle here, and areas full of "pores". Now that I'm looking at them on my larger screen, the "pores" themselves seem to be corallites - microscopic ones. The black dots are in the center of honeycomb like shapes. I'm confused now, are these the fossilized remains of one or two type of corals, or maybe a colonial coral and a bryozoan? Sorry about the bad quality and distortion of the pictures taken through a microscope lens on my phone. Please help me ID these tiny hurricane look-alikes. As always, thanks in advance. Here a couple of them in various states of preservation. Lots of them have a vug where the center of the corallite would be. Here the circles look like growth rings and in some areas the "pores" are clearly visible. #1: This one is the only one with detail in the center. Septa? #2: a vug at the center seems all that's left here. #3: Just pores in the center, and in between the circles, maybe the faintest lines that could have been septa? #4: Area in between corals, with faintly visible honeycomb shapes: Detail of the above: Another area in between, looking somewhat different again:
  15. Animal or mineral?

    I thought this was coral when I plucked it from the creek, but I'm not so sure now. 8 cm x 8 cm Kosciusko Co., northcentral IN.
  16. Interesting gravel pit find in Monticello, Maine (Aroostook county, slightly north of Houlton - NE Maine). This specific area is identified as “Ordoclavian-Silurian marine sandstone and slate“ on the FEMA Simplified Bedrock Geologic Map Of Maine, and the north branch of the Meduxnekeag River passes through this small town. I’d be very appreciative for ANY information anyone can glean about this find from the photos and information I’ve provided. Thanks always for your time and consideration. ~caroline
  17. St. Paul find

    I found this specimen last summer in the St. Paul Stone Quarry in St. Paul, Indiana. I think this site is Silurian. The oval on the left is 1.5 x 8 cm. The one on the top is 4 x 10 cm. Lots of smaller ones. They're flat, not raised. Any idea what they are?
  18. Is this a fossil?

    Is this a fossil? Kosciusko Co, northcentral Indiana
  19. Is this a decent chain coral?

    My current quest is to collect at least 1 fossil from each of the Periods. I do not have a Silurian fossil yet, and am considering buying this one. My question is: Is this a fairly decent specimen? The photos are taken of my computer screen using my phone, but I think they should be clear enough. I have tried to make sure there is NOTHING in the photos about the seller or the website... Dang it- How to I reduce the MB so my photo can be posted? grrrrrr....I've tried things I've done before, and none of them work...
  20. Can anyone confirm that this to be a tiny horn coral at the top of this little pebble? Its diameter is about 3mm. It's not at all perfectly preserved, but what a surprise I had when I discovered it through my clip-on phone microscope. Sorry about the grainy quality of the close-up image, it's as good as it gets using a $4.50 clip-on toy microscope Also, I assume those are beekite lined shell bits on the sides of the pebble? TIA!
  21. Is this a crinoid stem?

    Is this a crinoid stem? If so, what is the exterior? Thx! From Kosciusko Co, IN.
  22. Lake Michigan brachiopod

    My daughter found this nice little brach at a Racine, Wisconsin beach, with silurian bedrock. Milwaukee with devonian bedrock is not that far north. So the shell may very well be devonian. Can anyone help with identifying the species? Thanks in advance.
  23. I went fossilling last Sunday (in the 50sF, in Chicago, in the middle of Winter!) and found some cool fossil rocks. I assume this one is either a orthocone nautiloid or a gastropod. Either one will be a first for me, so that's pretty exciting. No matter what it turns out to be, am I looking at a Steinkern here? Second photo: I think that #1 might be a nautiloid? The apparent crushed "spine" is confusing though. Could it be that the siphuncle does run in a siphuncle "deposit channel"? And here it was crushed and flattened? I even researched silurian trilobites, but their spines are much wider in relation to the rest of their bodies than is the case here. I'm stumped. I believe #2 is a stem of a branched bryozoan which has been worn so that the inner structures have become visible. Possible? Oops, I forgot to indicate the height of the rock. It's 2cm high. The width of the bryozon is about 7mm. Thanks in advance to everyone who'll chime in, I appreciate it!
  24. Another old fossil

    If you could give your opinions on this piece, they are common in Ontario, but the hole does have something weird in it as well as the shell, collapsed perhaps?
  25. A soft limestone piece

    I was wondering what this might be. It's a soft, light weight piece from northcentral IN. I am posting three pics but can't fit them all into this post.