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Found 11 results

  1. fossilsonwheels

    Cretomanta ?

    I found an interesting fossil in my Mesaverde formation matrix yesterday. It has me scratching my head a bit. At first I thought it was a Sawfish rostral but after a bit of research I am not sure. I think it looks like Cretamanta possibly. It is the right size at 1mm. I had had some difficulties with the equipment at work today so I only got one decent picture.
  2. fossilsonwheels

    Mesaverde Formation Round 2

    I have been a little bored lately and missing micro matrix searches. It’s been awhile since I’ve gotten to enjoy hunting for tiny shark teeth. I got some more matrix from the Rollins Member of the Mesaverde Formation. My first time through that matrix produced one of my favorite finds, a 1mm Scyliorhinus tooth. This formation doesn’t provide much in the way of complete teeth but it is a fauna that was really quite diverse. The first search was with less matrix but I found enough to want to do it again. This time I have more matrix and in varying states. Some is broken down, some i
  3. fossilsonwheels

    ID help with some Cretaceous Shark teeth

    These will all be from the Mesaverde Formation, Colorado. First up is a 1mm tooth that sure looks like an anterior Heterodontus tooth to me. I am open to any ID suggestions but I see a lot of similarities with the Atco tooth I recently found.
  4. I’m not really sure I’ll be to get an ID given the condition, size and difficulty in photographing them but I thought I’d try. First tooth. Just over 1mm. This one is from Atco Formation micro mix. There was an Odontaspis on Elasmo that looked somewhat similar but I really don’t know.
  5. 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, R
  6. That little vial of micros from the Mesaverde formation is the gift that keeps on giving. I dissolved some of small bits of matrix in vinegar. Still no batoid teeth but a couple of shark teeth did emerge. Mesaverde Formation, Rollins Member Colorado The first is a candidate for the smallest shark tooth in my collection. At most it is 1mm and I think it is another possible Cat Shark tooth. Quite similar to some NJ teeth I found on line. I am open to other possibilities as far as an ID goes. Regardless, it is one very cool looking micro tooth
  7. fossilsonwheels

    More Mesaverde ID help needed

    I have a few more micro finds from the Mesaverde matrix that I could use some ID help with. I found additional information as well, these micros come from the Rollins member. Given the lack of information on line I am not sure how much that helps if at all. First up is the one that at first glance looked like it might be a ray of some kind but am pretty stumped. I could not find any good matches for this one and I searched pretty hard. It is 2mm or so in size and this is the best I could do picture wise. I really have no idea what it is.
  8. I thought it would be fun and possibly helpful to other collectors to discuss the results of my first foray into the world of micro fossil exploration. I had purchased some quantities of micro matrix from two different formations and they provided vastly different experiences for me as a collector. I got a vial of micro fossils from the Neva formation which is from Kansas and is Permian. This stuff really proved to be quite a challenge and was not ideal to start with. These are TINY fossils and I was not equipped to handle such small fossils. Identifying the shark material was chal
  9. fossilsonwheels

    Cretaceous Micro Shark ID

    I have a few more micro shark teeth from the Mesaverde formation that I need ID help with. Up first is one of the coolest teeth I found in the micro mix. Roughly 2mm with some very cool looking cusplets. I originally thought it might be a Scyliorhinus tooth but I studied some teeth from other and I think I was wrong about cat shark. I thought maybe a tiny Protolamna but that is just a guess. I am actually pretty stumped. Any suggestions or thoughts are appreciated.
  10. fossilsonwheels

    Chiloscyllium tooth ?

    I had some excellent luck with the micro fossils from the Mesaverde formation today. I came across a really beautiful tooth that I believe belonged to a Bamboo Shark. I think this tiny 1mm beauty is a Chiloscyllium tooth. I am not real sure what else this might be. It is attached to a tiny piece of matrix so I can not get pictures of the other side. The described species from the formation is Chiloscyllium missouriense and I found little on line about that particular species. This micro matrix comes from Colorado. The paper I have describes the Mesaverde in Wyoming. Th
  11. I am currently quite excited as I get to concentrate my collecting on Cretaceous era sharks. We are pretty solid on the Dino programs so the shark education programs are getting some attention. We want to bring more scientific depth and broader diversity of sharks to the programs. At the moment, this means a fun spin through the Cretaceous. This also does help the dinosaur programs too as we want to discuss the Western Interior Seaway in more depth. One of the things an expansion in the Cretaceous means is some fun with micro matrix and tiny shark teeth. I have done some work with
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