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Found 19 results

  1. Dean Ruocco

    Undet. Crinoidea

    From the album: Mahatango Formation

    Undet. Crinoidea
  2. I found this fossil in Alpena, Michigan, in the USA. It looks like a colonial rugose coral to me, but I’m not sure of the genus or species. It would have to be Devonian or Silurian, and native to Michigan. Does anybody know what this is? Also, is it a petrified or cast fossil? I attached four photos below.
  3. SilurianSalamander

    Bivalves help

    I found these Devonian bivalves (?) at the Milwaukee formation at estabrooke park in Milwaukee Wisconsin. I think the first one could be a bivalved arthropod like an ostracod and the second could be part of a brachiopod. Any help is appreciated! Thanks. Sorry for lack of scale! I just put one in my rockhounding bag.
  4. sarahbbgun

    Are these structures Stromatolites?

    I’ve been clearing out invasive vines from my neighborhood park/green space and came across these structures absolutely covered in fortunes spindle and green briar. I could see a little part poking out and wow I just had to uncover them. Could they be stromatolites? Or just layered ole weathered limestone boulders? My Google searches of stromatolites did turn up a few that resembled these structures. But only a few:) any thoughts are greatly welcomed!
  5. SilurianSalamander

    Jawless fish? Nothing? Big Brachiopods?

    Hello! I found these fossils(?) at Estabrook park which is part of the Devonian Milwaukee formation. They appear to be external moulds. These were found near the Lindwurm and Berthelet Members. Are these jawless fish? Big brachiopods? Non-fossils? I’m stumped on these. The formation is known for its plants, giant fungi, jawed and jawless fish, Cephalopods, and Conulariids. So sorry for the lack of scale! I need to start carrying a tape measure with my fossil hunting backpack.
  6. SilurianSalamander

    Platyceras?

    I was wondering if I found an external mould of the Devonian gastropod Platyceras. The fossil curves in the rock which was hard to capture with the lighting. The rock was too big to carry back and I didn’t have a ruler with me so I apologize for lack of scale. Thanks!
  7. SilurianSalamander

    Unknown Paleozoic echinoderm

    Crinoid calyx or echinoid? Found in gravel with Ordovician-Devonian fossils. About 2cm across at the widest point. Druzy coating over the fossil which seems to be an external mould. In orange jasper. Thanks so much!
  8. SCH

    new vegetation find

    Time frame indicated by brachiopods. One stem is grainy like wood, other had both vertical and horizonal patterns. Any idea what I have found? I am in Greenbrier county wv.
  9. As I have been researching large ctenacanthiform sharks from North America, I've been wondering if there are any known globally that are currently unnamed. I definitely know of the large Ctenacanthiformes Saivodus stratus (found in both what is now North America and Great Britain), the large Ctenacanthiform from the Permian Kaibab formation in Arizona, and the 'Texas supershark' (a likely large species of Gilkmanius) from the Pennsylvanian Texas Graham formation (all three as larger or larger than an adult Great White Shark (Carcharodon carcharias)). But are there any large ctenacanthiformes (at least in size comparable to a modern day adult Great white shark (Carcharodon carcharias)) currently unnamed that are also known? Ctenacanthiformes are known from North America, Greenland, Europe, Asia, and South America. https://www.mindat.org/taxon-P34476.html Even though study of Ctenacanthiformes as a whole is just starting to become more through within the past few decades, I'm wondering if anyone on the forum is aware of any currently unnamed Ctenacanthiform fossils from areas outside of North America of Great White Shark (Carcharodon carcharias)) size?
  10. Cracked this open and found an interesting pattern. Is this evidence of a fossil within this limestone? If so what could it be? See the thin strands alongside the main “stem”. Why is the outer layer this color? Some pictures have had the contrast and saturation adjusted to aid with identification I’ve only been searching for and studying fossils and rocks for not even a year. Teach me all the things! The fossils that I’m familiar with in this area aren’t matching up. found near Beaman Park - north west Davidson County, Tennessee. This area has features of the western highland rim not so much of the central Basin (is what Google says) thanks! Sarah (This is my first post! I’ve been wanting to post many things for a long while but haven’t gotten up the nerve so be nice:)
  11. SilurianSalamander

    Marine plants/terrestrial plants/macro algae?

    Found in the stone steps at estabrooke park quarried from the Devonian Milwaukee formation.
  12. Misha

    Holoptychius scale

    From the album: Misha's Late Devonian Fossils

    Holoptychius sp. Fammenian Ketleri Formation Venta River Latvia
  13. SilurianSalamander

    What are these Paleozoic fossils?

    All Devonian -ish. First is from port Huron, second is from the Milwaukee formation, third is from the Nike missile site in Waukesha WI
  14. SilurianSalamander

    What could this possibly be?!

    Found on a Devonian beach on Lake Huron in port Huron. Thanks!
  15. Bringing Fossils to Life

    My first trip to Penn Dixie

    I recently went to Penn Dixie for the first time and was not disappointed. Our tour guide first showed us the youngest rocks, then the pyrite. Here I found a tiny juvenile Tornoceras, Bactrites, and out guide showed us that individual septum can be found (see this post). I also found a fragment of a non-pyritized tiny Eldredgeops thorax. I found what HynerpetonHunter says is worm coprolites, and a few tiny brachiopods. Then, we went to the place where phosphate can be found. After that, we stayed a little at the place where fossils from the oldest layer were deposited in the soil, and I found a Naticonema gastropod, among the rarest fossils at the site! There were lots of brachiopods, crinoids, and rugose corals here. We then found some more corals, brachiopods, and trilobites at the most recent Dig with the Experts piles that were turned up for collecting. We walked towards the stream and on the other side found many bryozoans and coral (this time Favosites). I dropped my bucket of fossils but was able to find most of its contents again. We went to a place nicknamed "Crinoid Heaven", because of the sheer amount of crinoid columnals that can be found there. after that, we went to the original Dig with the Experts that was unearthed in 1993 (there wasn't much). After this, we went to where some trilobites are, but not as much as the recent Dig with the Experts site, so we went back. By this time our tour was over and we simply filled bucket after bucket of fossils. I found some Bellacartwrightia, Greenops, too many corals, and many, many Eldredgeops. I agree with Clary and Wandersee's (2011) rating of Penn Dixie as the top fossil park in the U.S. Below are some pictures of some of my favorite finds. First, some Eldredgeops. I prepped the top right cephalon with some dental tools. These can be found abundantly, but here are some of my best. ======================================= Some Bellacartwrightia. These are uncommon Asteropygines that are sometimes confused with Greenops. To prove that this cephalon belongs to Bellacartwrightia, look at its cephalon posterior border furrow - it continues down the genal spine, while it ends at the base of Greenops's. Directly above it is a juvenile's pygidium. Some more Bellacartwrightia pygidiums - on the same rock but on different sides. =================================================== A Greenops cephalon - the cephalon posterior border furrow ends at the base of the genal spine and does not deflect backwards. An enrolled Greenops in the matrix. Since Asteropygines have such this cuticles, I am going to wait to prep this one. Note: the scale bar is equivalent to 2 mm, not 1. ============================================= Now for the Gastropod! This is Naticonema, dorsal and ventral. ============================================ Mucrospirifer. ======================================= Placoderm bone? I am not that good with bones and any help would be appreciated on this one. I know more of these have been turning up lately, or at least being recognized. Penn Dixie was certainly worth the long drive and I very highly recommend it!
  16. MarcusFossils

    USA/New York/Devonian

    From the album: My Collection

  17. Doggeek

    help with Devonian fossils

    Hi All, Some of you helped me ID some fossils a few weeks ago, and I've been browsing around the forum learning lots ever since. My mother-in-law really enjoyed seeing the fossils I found, so this morning she hiked out with me on our first official fossil hunt. We found tons of crinoids and lots of great brachiopods, and a few mysteries that I'm hoping someone here can help us ID. From looking at area geological maps these are from the Devonian period and the Foreknobs formation. The first one here I am pretty sure is an intact crinoid, but would like confirmation: Second: this textured area... coral? bryzoan? It's in a couple of spots on this rock. And mystery number 3 - another weird texture area: Thanks for any help!
  18. I bought these brachiopods last week, and would really like to remove this matrix. I also have more than two Brachiopods that need cleaned, I just thought I wouldn't need to take pictures of all of them. I would appreciate any help that you can give me, thanks in advance.
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