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Found 202 results

  1. Liesegang rings?

    At first I thought it might be the cross-section of petrified trunk but upon a closer inspection, I doubt it's petrified woods. It is not silicified. I wonder if it's a concretion or Liesegang rings? I don't think I have seen something like this in person before. I couldn't get it extracted because it's embedded in the bedrock.
  2. Burrow?

    I'm wondering if it's a fossilized burrow or some form of ichnofossil. Notice the depression from the opposite side of the burrow-like projection. Dakota Sandstone formation and Cenomanian in age.
  3. Petrified woods?

    I'm wondering if it's really the petrified woods. It's found in ironstone concretions from Dakota Sandstone (Cenomanian), and it strikes me as 'woody'. I'm interested in what others think. From different trip and different site few months ago, but same formation and age.
  4. Finding the fossilized leaves from Dakota formation (also known as Dakota Sandstone) has been one of my goals for a long time. Today I headed to Ellsworth County, Kansas, where the Dakota Sandstone are located and hunt for the fossilized leaves. Unfortunately it's mostly a bust, but I did find a couple possible wood fossils and a few interesting rocks. I didn't take anything home this time except some pictures and memories. Notice the trees following along the small stream. Interesting sandstone! Interesting ironstone concretion! ...Continued on the next post.
  5. Concretionary?

    From my previous trip to Ellsworth County, Kansas and it's located in Dakota formation, Cenomanian. It appeared as almost like vertebrae but I'm sure it's not verts. Is it by chance some form of ichnofossil? @jpc thinks it's concretionary. No disrespect to him, he's the only one who offered his opinion and I would like to know if anyone else have a different opinion.
  6. Tree limb? Bamboo? Reed?

    Like what title said: is it a tree limb, bamboo, reed, or is it even something geological? Dakota formation, also known as Dakota Sandstone. Dakota formation is known to produce variety of flora fossils, such as leaves and seeds. The patterns on these fossils strike me as 'flora-ish'; like these that seem be nodes and also 'bark-like' and fibrous textures. ...Continued on the next post.
  7. Today I had a good time with fossil hunting at the Dakota formation (early Cenomanian) sites and Greenhorn formation (Cenomanian-early Turonian) sites in Ellsworth county, Kansas. Typical view of the local countryside, but still beautiful! I keep finding these weird vertebrae-like rocks, clustered in this particular site and not other sites. I suspect it's not vertebrae but I still can't figure this out yet. These mysterious vertebrae-like rocks...reminds me of shark centrum and crinoid stems but I don't think it's them. This site is Dakota formation. I took these home just in case it is identified as fossils later. I think it's fossil vegetation of some sort. Maybe reed or horsetail? I found these jumbled at different locations but put it together and it fitted like a puzzle. I took it home and will be prepped. This is from Dakota formation. Inoceramus from Greenhorn formation. One of the best specimen of this genus I have found so far! Took this one home. Another Inoceramus, pretty good specimen! I also took this one home. Tiny fossil in the center. Greenhorn formation again. This tiny fossil, image enlarged and the ridges/grooves are visible. No idea what it was. I took this one home and will be put under the microscope for identification efforts. The storm was brewing at the distance as the cold front is heading south. It was lightning and I was at near the top of hill, the road would be impassable if wet, so it was time for me to go home! I will be posting some of those fossils on the Fossils ID section soon after it is cleaned up. Cheers!
  8. Domatoceras Perhaps?

    So most of what I find is Metacoceras or Pseudorthoceras, two very common cephalopods locally. I've found a few Solenochilus, but they are different enough that I know what I found right away. This specimen was discovered as a body chamber. I thought Metacoceras, because, why not? Anything of this shape usually is. After some moderate prep, I revealed some more body chamber, but not any suture marks. The venter is oddly shaped as well, with a shallow U shape. It might be crushed, so I didn't pay it too much mind. I also discovered that the body chamber is much larger than any Metacoceras specimen I have found to date. In viewing the paper A NAUTILOID CEPHALOPOD FAUNA FROM THE PENNSYLVANIAN WINTERSET LIMESTONE OF JACKSON COUNTY, MISSOURI (full paper), I found plate 5 which features Domatoceras. They are known to exist here, but I've never found anything definitive. Here is the plate from the article: Here is a Metacoceras (CG-0071) on the left, and the specimen in question (CG-0068) on the right. Here is the venter of CG-0068 showing the two ridges marked with arrows. I feel these are similar to the ridges shown in Figure 2 of Plate 5 And that is that. Any cephalopod people have an opinion? I could prep it more, it's just at the labor intensive micro prepping state right now with solid cement like limestone overlaying it. One more photo of it for some additional context:
  9. Pennsylvanian Ammonoid

    I've had this specimen sitting in my "I'll get to it later" pile since last year. I've learned a lot about Cephalopods the past year, one of them being the differences between Nautiloids and Ammonoids. Upon re-inspection of this yesterday, I noticed the shell lines, but more importantly the suture lines caught my eye. These do exist here, but I would call them pretty rare to find. Not being an expert, I would consider Wellerites or Schistoceras, but these are based on quick comparisons using a Pennsylvanian Cephalopods of Ohio book I have. I started to clean up the rock using an air scribe, but I've only got about 30 minutes into it so far. I need to take much better photos, but the shell exterior is messy like this. You really need to rotate it under light and/or a microscope to see the sutures great. There is so scale in the photo, but it's 20mm from front to back of the inner exposed whorl. The top of the photo is still more shell continuing on another 9mm and I started to expose more suture pattern there. The top of the exposed whorl has some shell material pattern shown in a black color.
  10. Is this cow, horse, or other? Metacarpal? Thanks for looking and helping. If I am in the wrong place on the forum, I apologize.
  11. I have had these two teeth in my collection for a good few years now. I do love the shine on them especially the smaller black one. Based on these pictures can anybody see any signs of repair work on either? I’m hoping not. Both pictures taken in a dark room with flash on my camera. Also does anybody recognise the colours/presevation to put a rough idea on the state it was found in? Pretty sure these both are US found megs. thanks Liam
  12. FORMATION BINNING: A NEW METHOD FOR INCREASED TEMPORAL RESOLUTION IN REGIONAL STUDIES, APPLIED TO THE LATE CRETACEOUS DINOSAUR FOSSIL RECORD OF NORTH AMERICA by CHRISTOPHER D. DEAN , A. ALESSANDRO CHIARENZA and SUSANNAH C. R. MAIDMENT [Palaeontology, 2020, pp. 1–21] pala.12492.pdf
  13. ? fossil

    I found this imprint on a rock in my backyard. I live on the Potomac River in Shepherdstown West Virginia USA
  14. Kiowa tooth

    It's pretty obvious to me it's a fossil tooth: but from what? Kiowa formation and Albian. Approximately 1.1cm long.
  15. Shark or bony fish verts?

    How do you differ between bony fish vertebrae and shark vertebrae? What about these three vertebrae from Kiowa formation (Albian)? #1: approximately 5.5mm wide and 3mm thick. #2: approximately 5.5mm wide and 2.3mm thick. #3: approximately 4.8mm wide and 2.3mm thick.
  16. Brachiopod or Bivalve?

    Kiowa formation and Albian. Approximately 1.3cm long and its quite flat and thin. Not sure if it's brachiopod, more specifically a lingula brachiopod, or a bivalve. Unfortunately the umbo is missing so I'm not sure if it's symmetrical or not. I'm leaning more on bivalve but I would like to read your opinion. What's the lowest taxonomy level you can identify?
  17. A fragment of something; I thought it might be a part of fish spine or decapod pincer. From Kiowa formation and Albian. Approximately 5mm long.
  18. Kiowa Mysteries

    All from Kiowa formation (Albian). Identifying fossils from Kiowa formation has been incredibly challenging for me the last few months and I would need help on here! These possible fossil fragments have features that made me have second thoughts on whether if it's just suggestively rocks. They are suspiciously of biological origins, but I would like your opinions. #1: approximately 3mm long. It's quite smooth and featureless with some mineral staining. #2: approximately 10mm long. top view bottom view and it's fairly flat ...Continued below.
  19. I try to identify any fossils on my own before I post it on here, that's how I learn! Anyway, I found these three shark teeth while pre-washing the matrices from Kiowa Formation (Location: Ellsworth county, Kansas. Age: Albian). A couple of them came loose during pre-washing and I found another one still in the matrix. Tooth #1: Is this tooth from Meristodonoides sp.? The views are from front and back of this tooth. Approximately 2mm long. Tooth #2: Is this also from Meristodonoides sp.? Approximately 3mm long. Tooth #3: Is this from Leptostyrax sp.? Front and back views of this tooth. Approximately 6mm long.
  20. Fish tooth #2?

    I named this topic as Fish tooth #2? because this fossil is very similar to my another fossil in a previous topic a while ago. Nobody really have any consensus on what it is and I thought it might be a fish tooth. I hope I will be lucky this time to have someone identify it for me with confidence. Located in Ellsworth county, Kansas, age of Albian, and from Kiowa Formation. It's approximately 4mm long. I know identifying specimens from Kiowa Formation can be a real pain since it's so little researched! lol...
  21. ID this ?dino?

    ·Big Brook, NJ, USA ·Panned fr brook bottom w marl+ ·Miocene form. overlaps Late Cretaceous? .Attach: images of 2 fossils .(found pre-2020) I assume these (3+1) fossils may be from the "same" species, two diff. animals? No outstanding horizontal/diagonal "veins" from the prominent central ridges. Rookie request to ID b4 summer trip to c Dr. Parris, NJ St. Museum, Trenton. Thx
  22. I found these that resembles burrow or root cast in Ellsworth county, Kansas, USA from my previous trip. The formation these came from are most likely Kiowa formation/Kiowa Shale and the age is Albian. Here's the link to my previous trip. I'm just catching up with the prepping and sorting my fossils from my previous trips. I am wondering if it is some sort of ichnofossils. Is it burrow, root cast, or something else? Also, is it possible for it to be from geological origin rather than a true ichnofossil? This one is the largest I found. The center is poorly cemented sandstone and can be easily brushed off with a toothbrush while the outside layer is hard. Notice the winkles around the interior bend. The measurement is in inches (I know I need to get a metric system badly, my apologies!)
  23. A spiny Brachiopod

    I found this spiny brachiopod in my boxes but thre are no more label in the bag,i think it's probably from the States the other side is not very nice but a spiny brachiopod is not very common,someone could help ?Thanks!
  24. paleozoic malacology

    DBNA Middle and Upper Devonian Cryptodonta (Bivalvia)from the Pelagic Hercynian Facies -Taxonomy, Stratigraphy, and Paleoecology Judith Nagel Inaugural dissertation,2006 ABOUT 5,8 MB the research areas on a Devonian geodynamic reconstruction :
  25. The past two weeks I have made three trips to hunt for fossils, particularly from Kiowa formation/Kiowa shale here in Kansas. The first trip were local: the outcrop in my hometown, Salina. The next two trips were in Ellsworth county, Kansas; which, is only about 30 miles/48 km away from Salina. My first trip to the local outcrop were not productive: I knew it is relatively non-fossiliferous and never found any fossils there despite of growing up in this town and visiting this area all of my life. It wasn't until two weeks ago (March 25th, 2020) that I have found my first fossil from there and I'm pretty certain it's planolites burrows. The second and third trips in Ellsworth county were quite productive! I have found mostly plant and shellfish fossils but also found few trace, vertebrae and tooth fossils. The area where I found these would be underwater when the reservoir level is high. I have so much to do the basic prep for the next several weeks... My first trip to the local outcrop in Salina, Kansas, and found a fossil containing planolites-like burrows.
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