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Found 53 results

  1. Hi everyone I just ordered some more microfossil matrix samples, most of which are rich in shark teeth. But I would like to know what to expect from the matrix, which means I am looking for websites of pdf's which describe the species from those locations. The first is from Lee Creek Mine, Yorktown Formation, Aurora, North Carolina (Miocene), I did find an ID section of Lee Creek teeth on elasmo.com but it wasn't extremely extensive. The second sample is a shark tooth rich Limestone Block (which still needs to be disolved) from the Mesaverde Formation, Rollings Member, Colorado (Cretaceous). If anyone has some pdf's of info sheets that could help with ID'ing the finds, I would be more than grateful! Thank you in advance!
  2. More cool STH Micros

    We recently got some great STH Hexanchus teeth from @JBMugu and he was kind enough to send us some great micro matrix. I always enjoy searching for micro shark teeth and the STH material usually provides quite a few surprises. This batch was no exception. I have only searched about about half of the matrix but so far it has given us some really cool shark fossils. I found a few Hexanchus teeth which included a tiny lower (pic 1) and a few commisural teeth. In our previous searches, we found a total of 1 partial Hammerhead tooth. This matrix was, comparatively speaking, loaded with Hammerhead teeth. We found 6 small ones, mostly complete specimens and a large one. (Pic 2) We also found an Alopias tooth, a bunch of excellent complete Heterodontus teeth including a high number of anterior teeth, a lot of Triakis teeth, and much more. I think we came across another Squatina vertebra as well. One of the more interesting finds was a what appears to be the gill raker of a Basking Shark. (Pic 3) I am posting a few few pictures and will take more later on.
  3. Harding sandstone question

    Hi guys, I recently purchased some processed Harding sandstone, I was looking for unprocessed stuff but I could not find any for sale so I had to just go with this. The fossils arrived today and I have been examining them with my microscope, I find this stuff very fascinating. My question is regarding these fossils here: the ID guide that came with them claims they are sharks but I find this strange, I believe chondrichthyes only appeared in the Late Silurian so how could this be? Are they something else, and if so do we know what that something would be? Also if they are sharks would we not also expect to find their teeth, yet they seem absent in this matrix. Thank you, Misha
  4. Hello everyone, I have been interested in fossil fishes from the Ordovician- Devonian for quite a while now, and recently I have begun to venture into the field of micropalaeontology a bit more. This has led me to purchase matrix samples from the Harding sandstone and I am also interested in getting some Maple Mill stuff. The problem is I currently only have one more vacant slide to use for these fossils, it was sent to me by @Shamalama with some other microfossils but I don't know where I could get more. The slide has an aluminum case with a piece of thin foam board inside and a glass on top. The foam board has cutout with a grind going from 1 to 64. I was wondering if anyone else might know where I could get some of these as I have not been successful in tracking them down myself. Thank you, Misha
  5. I finally got some microfossil slides and I got some additional Devonian matrix from New York. I decided to go back to the Genundewa Limestone matrix primarily because I failed to find shark related matrix from other locations that are of the same age. Each of the three searches in this matrix has produced different results which make it fun to search. This search was a lot of Phoebodus teeth and some were close to 75% complete. Easily the best Phoebodus teeth I’ve found in this formation yet. I found a fair amount of Omalodus teeth and some nice ones. I also found two incomplete mystery teeth again. Fewer denticles but a piece of fin spine. The shark remains are in the bottom slide in the picture. The top slide are awesome little fish remains including various Conodont elements, fish teeth, fish scales and what I think might be bits of Placoderm. These are not going in a display. They are just going to be study specimens for me. I think I can find or make microfossil slides that will hold the fossils in place better but these work now.
  6. Location is in Missouri The area is dated to the Pennsylvanian Formation: Muncie Creek Shale Found this very small tooth like structure and was wondering if anyone could confirm if it is a tooth or not. Normally I can identify teeth if they are large enough, but this specimen is very small. I have found teeth before in these concretions but much larger such as a possible Symmorium or Glikmanius along with a tooth from a member of Eugeneodontida. Here are some images I edited that might make some details more clearer:
  7. Oligo-miocene micro tooth

    I was lucky enough to receive some Micromatrix from @Gizmo and @sharkdoctor, and today I was looking through some of the teeth when I saw one I hadn’t noticed before. I’m sure I’ve seen something like it onlin but I can’t for the life of me remember where or what it is. Any one got any ideas? Matrix is from VA, Old Church FM (oligocene) and Calvert FM (Miocene) contact layer. Measure is in centimeters
  8. Mystery micro(ish)-fossils

    Hi all, Need some help with this ID! I found this fossil years ago on a beach in eastern North Carolina and it's been a mystery to me since. The best answer I could come up with is that these might be some kind of foraminifera (maybe of the fusulinid variety, though these don't seem to have the tapering at either end), but I'm not sure how to go about researching other possibilities. My camera has a tough time with close-up pics, so this is probably as much resolution as I can get. Thanks in advance for the help!
  9. https://phys.org/news/2020-06-microfossil-spectroscopy-dates-earth-animals.html?fbclid=IwAR15tVkP0pUuvoyi-8ByQN2_GC-wRxUSND-0xkRdv5meV0zwY16MbPNGiqo Ross P. Anderson et al. Aluminosilicate haloes preserve complex life approximately 800 million years ago, Interface Focus (2020). DOI: 10.1098/rsfs.2020.0011
  10. Unknown "toothed" microfossil

    So...while splitting my thousandths shale and looking under the scope, I came across this organism, which appears to have interdigitating teeth?. At least most look interdigitating as opposed? Or , I just dunno. There is also a surrounding imprint on both sides. It was found in Stark shale Kansas City Missouri and is nearly 2mm long. I have two views, and can get the other split side, but this is the best images so far.....ANY thoughts, would be appreciated!....In my very limited (one month :)) experience looking at conodonts, this doesn't appear to be one, (S elements?) but, I've been wrong so many times on other fossils,, this would be a breakthrough:)…. Thanks for looking! Bone
  11. With the current pandemic I decided now was as good of a time as any to get some matrix from the Aguja Formation with the help of PaleoTex! This turned out to be a great decision as I was extremely lucky, finding about basically everything I wanted to, and more in only 5 pounds of matrix! I'll be sure to post pictures but I got numerous amia and gar teeth, along with atleast 36 gar scales. Tons of Crocodile teeth including a large Deinosuchus tooth. Several shark teeth and a partial hybodus spine, also several brackish water pycnodontid teeth and tooth pallets. 4 fish or salamander jaws with teeth. Regarding dinosaur teeth I got 17 Hadrosaur teeth, including 2 partially rooted. A partial Ankylosaurus tooth. 4 Therapod teeth including a perfect Saurornitholestes tooth and a Premax. My favorite find however was the Paronychodon tooth I found! I'll be posting that picture first! Highly recommend this matrix, but I was also told that most people don't find all this stuff, so keep that in mind aswell. Stay safe! Happy hunting! (ID's for these specimens done by lab manager)
  12. I’m hoping someone on here has some spare matrix from the Mississippian Golconda Fm in southern Illinois. The roadcuts near Anna and Vienna are pretty well known (I know a few members here have hunted there), but at over 6 hours away it’s a bit too long of a trek for me right now. A recent paper on microfossils from there piqued my interest and I’d like to try and process matrix to search for some. If you have any, PM me and we can work something out.
  13. Mazon Creek Microfossils

    I had a few duds pop open yesterday but saw one had a tiny speck of something on it, no more than a millimeter long. I had my digital microscope out for other microfossiling activities and decided to take a look. Nothing super interesting, just a tiny plant fragment. But it did get me curious if anyone has done micropaleontology work on Mazon Creek material? I would think there would be quite a bit to explore, but that said I've never really seen the topic mentioned. The only microfossil I've seen discussed from Mazon Creek is a species of ostracod, but usually the only specimens you see are nodules containing hundreds of ostracods as they are readily apparent to the naked eye in that case.
  14. I have shown several of these things to a number of micro-paleontologist, paleontologist, geologist and marine biologist and no one seems to know for sure what these specimen are. They were found in a sandstone boulder with bivalves fossils, they range in size from about 3mm to about 0.20mm. I'm told that they are most likely a new foraminifera species. Anyone have a clue???
  15. The first specimen is about 0.70mm long and the last one has a diameter of 1.4mm. I searched all 166 pages at marinespecies.org and came of two look-a-likes for the first specimen, they were, triloculina and quinqueloculina. The last specimen sorta looks like something named reophax subfusiformis. I can't say for sure if those are the correct species for these but it's a place to start. I've come across hundreds of these things and to date only about 3 can be identified by scientist.
  16. I really like the shape to these. I have come across sites with photos of these but I can't seem to find any info about them such as what period they may be from. These microfossils are harder to research than they are to find...phewww.
  17. Cool microfossils

    Hello all, I believe that one of these is a foraminifera, not too sure if that tiny bivalve and snail would be considered one or not. Anyone have any ideal what period these may be from? Was digging some old bivalves and gastropods out of some sandstone and came across a boulder that had hundreds of microfossils mixed in it's debris. The size range from what you see here to less than 0.50mm. Some if this stuff is really cool looking.
  18. Hi folks, we bought a sample of microfossils originated from Waurika, Oklahoma. It was really fun to search through the little pile and try to ID the pieces. The result was a short video We decided to share it hoping for comments and more interesting info from the knowledgeable audience of this forum. What's really cool about microfossils is the amount of details and often stunning preservation of tiny pieces. Does anybody know a microfossil locality in Central California?
  19. Hi all. Only one of my first few posts on here as I'm primarily a collector. However, this would tie two of my hobbies together. Microscopy and fossils! I've gone through the pinned articles on prepping, cleaning, etc. The one thing I'm still not clear on is retrieval of the matrix as easy as digging a shovel full of dirt, running it through sieves, sorting, and hunting? I'm currently living in Biloxi, MS, so I assume I'll need to travel an hour or two to get out of the marine deposit area that is constantly in and out. Thanks so much! -C
  20. Texas micro shark teeth

    Micro fossils from the pecan gap right where it meets Austin chalk, shark teeth with the roots dissolved are common here, as are baculites, if you see something you know or want to know more about say.
  21. Creek was a little flooded today made it harder to navigate, started the day with 2 dead drill battery's that I had charged the night before so I decided to move father up to look at some different exposures, started by picking up some matrix for micro's from the bottom of the pecan gap, more on that later, and then some Del Rio clay for the same, (if someone has suggestions for how to wash this faster that would be great) spent the next 2 hours picking up heteromorph mariellas.
  22. Micro trilobite

    I don't know whether to laugh or cry on this one. Found an enrolled Trilobite in my micro matrix. Gave it a nice spa treatment of hydrogen peroxide & got most of the matrix off. And then took a look at it with my dino lite & found that it has almost no head. Thing is maybe 3.5 mm across and the one thing I didn't actually expect to find. No idea if it can even be identified now, but here's the pics anyway. Pics are 45 x magnification. Jasper Creek Formation. Late Pennsylvanian.
  23. Micro shell?

    I recently bought some microfossil matrix from the Jasper Creek formation in Bridgeport Texas. Found lots of crinoid stem pieces, some about as big around as the lead from a mechanical pencil, lots of sponge pieces & quite a few Girtyocoelia Sponge ball and chain sponges. I also found what I think is a complete shell, but I'm not sure. Everything else is a tan color, but this is more of a brown & black. When putting it in hydrogen peroxide to try to clean some of the left over matrix of, it floated. So I looked at it with my DinoLite & took some pics of it. Both sides have 2 shots showing different levels & the "hinge" area. It's .5 cm at the widest. 50x magnification.
  24. Campanian microfossils

    Hi everyone! It would be amazing if any of you could help with identifying some marine microfossils I sieved. The origin is campanian (might be santonian) marine sediments. The location has yielded mosasaurs, fish, and sharks in abundance. But I have a few bone fragments that I have absolutely no clue what they are... Here are some of the mysteries:
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