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  1. isurus90064

    Extraordinary Common Teeth

    Hey guys, I've been off the radar for awhile .. work you know .. been working on Siggraph for those of you who are familiar with software development. Just wanted to start a new topic here .. This one is right at 3.00" - 7.62cm C. carcharias Bahia Inglesa Formation South of Caldera Provincia Copiapo III Regio de Atacama Chile
  2. fossilsonwheels

    STH hastalis or planus

    I have had this STH tooth for awhile but I can not identify it. I have assumed it has to be either a hastalis or planus. When I first got the large group of teeth that this tooth was in, I set aside as I thought it might be Parotodus. I quickly talked myself out of that ID. I talked myself into hastalis or planus. I have looked at teeth in my collection and can’t find an exact match. I checked Elasmo and same story. My best guess is lower planus. It is just over 1” on the diagonal, pretty thick root. Any thoughts ???
  3. I am still not back to work so I’m pretty bored and don’t have new micro matrix to pick through so I have been examining some STH micros I found in previously searched matrix we got from @JBMugu awhile back. One of the denticles I found stood out from all others. I only found one of this morphology in all the matrix I searched. I set it aside in it’s own bag in with the other denticles. I forgot about it until a search for papers on Echinorhinus fossils. I saw a photo of Echinorhinus denticles and I remembered the denticle I found. It looks so similar that I think that is what thi
  4. I would like to trade Trachydomia spp. snails for any legally-collected rough or trace/track fossils, from any era, any location. Here are updated images of what I have left of Trachydomia spp.. The first three in the front have been lightly coated with a clear acrylic (?). The other image is of Desmostylia tooth fragments (Langhian Miocene) from Sharktooth Hill, near Bakersfield, CA. These were obtained at a local rock and mineral show several years ago. I tried to get these to fit together to make a complete specimen. The only
  5. Ludwigia

    Squalus occidentalis (Agassiz 1856)

    From the album: Pisces

    8 + 12mm. long Miocene Found at Sharktooth Hill, Kern County, California Thanks to Tony (ynot) for these.
  6. Ludwigia

    Hexanchus andersoni (Jordan 1907)

    From the album: Pisces

    3cm. at the base. Miocene Found at Sharktooth Hill, Kern County, California Thanks to Tony (ynot) for this one.
  7. I have found several smaller fragments before, but never an intact one. This one turned up at the end of a very long day and I fortunately spotted it as my son was shoveling matrix into the sifting table. I startled him mid-shovel by shouting "STOP!" when I saw a row of white points sticking out of some matrix. Son was just about to throw another shovelful on top of it. Nice reflexes by him to change course mid-air to avoid me (now shielding the tooth with my body - LOL). Worth it. :-) Definitely had potential but I didn't know how much root was going to remain. After some careful
  8. ScottM

    Sharktooth Hill shortfin mako?

    Despite several visits to Sharktooth Hill and hundreds of teeth, I've yet to confirm a shortfin mako (Isurus oxyrinchus or is it Isurus desori?). Perhaps this is a possible candidate. Or maybe another C. planus or C. hastalis lower. To me, the features that make this one look different from those other common STH teeth are that it is relatively long with a narrow base/wide root, and also that little bend at the tip when viewed from the side (I think it shows up in the bottom two pics ok). It just stuck out as "something different" and I was able to eliminate a lot of other possibilities. So ma
  9. I recently had a chance to try my hand at a few matrix pieces from Sharktooth Hill. I'm happy with how they came out, although I know I could do a better job next time. Huge shout out to @digit and @ynot for their advice and encouragement. I think the thing I appreciate about matrix pieces like these are that prepping them this way can turn a rather unremarkable tooth into something unique. Anyway, I had fun doing it and I was encouraged to post a "trip report" so here goes... Here's how they looked when I got home. Nice to find out the tooth was intact. W
  10. fossilsonwheels

    A couple of STH ID’s needed

    As I’ve gone through the donation of STH material we received, I have found a couple of shark teeth that I can not ID. My picture capability is limited to my phone so I apologize for picture quality. I thought the first tooth looks something like a Hemipristis symphyseal tooth but I could be off base. It appears to be a complete tooth as I see no evidence of the root being broken.
  11. We got a large donation of STH fossil material from @JBMugu recently. I have been working from home for a week now and this has given me time to break down the large amount of material. There has been lots of sorting, some light cleaning, and quite a bit of time at the microscope as he gave us quite a bit of micro matrix to go through and that can be pretty time consuming. I thought it might be fun to go through the donation and show the progress we have made in sorting through so many fossils. This donation is so large that we got fossils that will not only bolster the displays an
  12. We know that fossils are not the priority for people at the moment. They are not for us either but I have found a good amount of stress relief in going through a large donation we got. The material is all from STH and we have enough to make a trade. It was part of the donation actually. Extra fossils for sale or for trade to improve our collection. I would like to avoid sales or doing smaller trades just for shipping reasons so I decided to put the trade stuff out as one lot. Given the current state of the world, consider this a post corona virus trade offer. We would probably not ship fo
  13. Hello, The indentions in these two pieces of Sharktooth Hill bone are very unlike anything else I've found there and I'm hoping someone recognizes them. Very smooth and very round, about 2-4 mm deep. I'm including pics of the backs of the pieces, not because they seem interesting, but just so you can see that they're not. It's a little hard to tell, but the large piece has a partial indention on one of the broken edges on the right side of the pic. Thanks for any insights you can offer! Larger piece - Front Larger piece - Back
  14. Found this thing today in my Sharktooth Hill bucket-o-bones and my first thought was "fossil oreo" so I was very intrigued to learn that there actually are fossil "cookies!" I even think I found one (not posted here). But this one is a sandwich cookie. I have pics from top, bottom, and all around the edges. The large hole you can see from the edge view goes straight through all the way. If what I learned about "cookies" is applicable, I would imagine they would be like caps on the two flat surfaces of my bone, and are therefore missing on this specimen? So I guess it's a vertebra?
  15. Beside all the bone fragments I've seen from Sharktooth Hill, this one really stood out. I'm hoping that the relatively good condition it is in will allow for identification. Taking a swing at it, I'll say turtle but definitely not too sure. All 3 pics are the same bone. Thanks!
  16. Sorry, but I barely know where to begin describing this. Happy to field questions or take different pics if that helps. What I DO know is that this seems much different from all the other teeth and bones I brought home from Sharktooth Hill. It is lighter weight than the other teeth and bones and seems to be composed of a pair of something with a plate on the bottom and sinuses in the back. The first pic shows what I'm calling the "top." Then if you tip that backwards you can see a smooth plate of some sort on what I'm calling the "bottom" And if you
  17. fossilsonwheels

    a little STH ID help needed

    As we work on our new displays I have found a few shark teeth that I need to verify an ID for. These are all from STH. First up is one I am fairly certain is Isurus desori. A little over .5”
  18. Hello, I am having some trouble IDing this tiny tooth found in some micromatrix from Sharktooth Hill. I believe I've narrowed it down to a smoothhound (Triakidae mustelus) or guitarfish (Rhinobatos) but of course others are probably possible as well. Thank you very much!
  19. Hello all! A few weeks ago, @caldigger generously sent me some micromatrix from Sharktooth Hill/Bakersfield in California (Miocene in age), and there is one little fossil that is kind of weird - hopefully someone can help me identify it! It's smooth on one side and has sharp bumps on the other side - please feel free to let me know what you think it might be. If better pictures are required, we'll have to wait until I get some sunlight up here in Mississauga - hopefully soon! Thanks in advance! Monica View of the bumpy side:
  20. ScottM

    Sharktooth Hill unknowns

    I had few more oddballs. As always your input is appreciated. Here's the first one.
  21. Hello, While sorting through my Sharktooth Hill micro matrix I came across some very distinctive teeth that I'm hoping someone can identify. Image 1 shows three very similar teeth in different orientations. They differ from most others I've been seeing in that they ha ve 3 roots and three "tiers" - best shown in the orientation of the specimen on the far left (root, base, top). The other teeth in images 2 and 3 remind me of Squalus and I suspect that's what they are. But they seem to be missing a part (the exact same part) and don't appear to me to be obviously broken.
  22. Yesterday, I got back from a family vacation to California. While there, I was able to spend two days digging at the Ernst Quarries. The weather was beautiful and the teeth were plentiful! Carcharodon planus hiding in the rock.
  23. Dug this little guy out today from same deposit as Sharktooth Hill location ( Mid. Miocene ). What I would like to know is this from a juvenile or a small posterior adult tooth. It is prepped labial side showing. Thanks for your insights.
  24. I'd love some thoughts on some of these recent finds from Sharktooth Hill. Thanks in advance! These ones, I think, are porcupinefish mouth plate pieces, but I have no experience with them. These seem like fish teeth. Parrotfish or related??? The two views are the same pieces, with interesting "toothy" parts on both surfaces. I can see the bottom pic maybe showing palatine teeth??? And finally this has me totally stumped. While collecting we saved it saying, "that's gotta be something" still still don't have a clue. Bottom pic is sid
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