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Found 5 results

  1. I have learned so much and enjoy the Squaliformes thread so much, that i wanted to get a start on the next one. I am very curious about the Orectolobiformes fossils that are lurking in the collections of TFF members. Carpet Sharks are not only represented by teeth but there are also opportunities for far more complete specimens, especially from the Cretaceous of Lebanon. The goal of this thread is show off our fossils but also exchange information, learn and in general just appreciate some of the sharks less frequently seen on TFF. Orectolobiformes fossils date back as far as the Early Jurassic of Europe. Early genera include Folipistrix, Annea, Pseudospinax, Ornatoscyllium, and Palaeobrachaelurus. There is a pretty good amount of diversity during the Cretaceous, including North America. I have had good luck finding Orectolobiformes teeth by searching micro matrix from Texas. Several genera also come out of Lebanon as complete fossils. There are some great Cenozoic locations that produce multiple genera like Morocco, the Nanjemoy formation, the Tallahatta formation, and Lee Creek. I am sure others can provide further insights into good locations for Carpet Shark fossils. The modern Orectolobiformes are a fairly diverse group of sharks and they have some cool adaptations. There are 7 extant families, 13 genera and 46 species. Some members of this order are really beautiful with interesting colors and patterns. The largest fish in the sea is a Carpet Shark, of course the Whale Shark. It is the only only filter feeder in the order. Nurse Sharks use chemosensory organs to find their prey. Wobbegongs use stealth and excellent camouflage to avoid predators and be very effective hunters. Perhaps the coolest adaptation in this order and possibly the coolest shark adaptation anywhere comes from the ability of Bamboo Sharks to walk. Many Bambbo Sharks can use their pectoral find to walk along the ocean floor and a few can walk over land. The Epaulette Sharks will walk from tide pool to tide pool when they have to. They also have the remarkable ability to turn off certain neural functions in order to deal with hypoxia, a result of their extremely shallow water habitats. They can go a full air with no oxygen with no permanent damage. Anyway, on to the fossils....
  2. 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 challenging but not nearly as challenging as just handling them. My first attempt to put a fossils on a slide resulted in me crushing a tiny partial Cladodont tooth. I was not happy with myself but it was a very teachable and humbling moment as I did at work in front of young co-worker who has developed into quite the shark fanatic. Once I figured out what NOT to do with the small fossils, I did find a groove and was able to find some interesting material for our display. I found a few shark denticles ( I think they are anyway lol), a possible spine, and a few partial teeth including one that looks similar to an unpublished species of Cladodont shark called Maiseyodus. There was not a lot of shark material and it was hard to work with but I plan on picking up another vial. I will not go through until I have better equipment though but I would like to continue the explore it. The goal was too add some Permian shark material from a marine environment to contrast the freshwater Permian stuff we had. In that sense, we accomplished our goal and I did really learn quite a lot so it was a positive result but one with plenty of bumps in the road lol The other micros were from the Cretacoeus Mesaverde formation and was Colorado. This was much easier to work with as far as size goes but there was much more actual matrix to deal with. I was also more familiar with the fauna and I had a much better idea of what to be on the look out for. It did not take long to find a few shark teeth. I opened the vial, dumped it on the tray and right away saw some partial teeth I could recognize. A few Hybodont partials were apparent very quickly as were some partial Sand Tiger teeth. There was also an interesting partial that I have not posted yet but might be a Cretalamna. I also found a few fossils that I think are ray dermal denticles. The really interesting stuff was found when I started searching the bits of matrix and the smaller fossils. Three little fossils absolutely made this a grand slam for me. I found what looks to be a Chiloscyllium tooth. It is fantastic shape and sits on top of a little piece of matrix really nicely. My ID looks to be okay as I did post here on the forum. I was really thrilled to find such a nice tooth. Another was posted on the forum and though I have some work to do to cement the ID, it MAY be a Cat Shark tooth which is one I have been searching for. Separating it from the matrix makes me nervous but I am practicing before I do it. I am really hoping it does turn out to be what I think it is but either way it was a fascinating find and thanks to some awesome TFF members led to a far better understanding of cat shark fossils. The third has not been posted yet as I need to take a closer look at it but when I first saw it, I thought it was a Rhinobatos which was another one I had been actively looking for. I got excited, put in a gem jar and put it in the display but I will take a better look this week. There were some interesting non-shark fossils too that I will go through at some point and quite a bit of poo as well lol I consider this to have been a complete success. We added some new sharks to the display and succeeded in furthering the diversity of sharks we can talk about. I need to get some equipment for exploring micro fossils at home and I need to work on the handling of the fossils. I need to learn how to separate small fossils from bits of matrix and I can always stand to sharpen my ID skills but this is a pretty important development for us. With some recent family events and two college aged kids depending on me the fossil acquisitions will slow down considerably. I can not buy a lot going forward so this is a fantastic and inexpensive way to continue to explore fossils, particularly Mesozoic sharks. A little bit of money spent on some matrix will yield fossils we can use. I do not live in an area where there is much fossil hunting to be done so this is also a way to self collect some material which is really satisfying. It has also been a great thing to have during my fathers illness and death as it kept me busy and my mind sharp. I can see a new addiction forming and it is a good one to have. In addition to adding some more from both of the above formations, I am going to pick up some Atco stuff and Kamp Ranch matrix too in the near future. That will keep me busy and I am sure we can add some more interesting fossils. This micro newbie is going to work on becoming a micro not-so-newbie lol I will post some pictures in the comment section.
  3. 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. The am assuming the fauna is similar given it is the same formation. Any thoughts???
  4. 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 STH micro mix over the years but Cretaceous micro shark fossils is a new area of interest. I picked up a little bit of matrix mix from the Mesaverde formation. I found a publication on the fauna of the formation and there is some fun potential in this mix. I am rooting for Rhinobatos and Chiloscyllium personally. I will also try this with some Devonian formation micro mix I saw out there too. I would love to hear about any other Cretaceous micro matrix that would be good to look for. Micro fossils are a great way for us to diversify without digging too deep into our pockets. This should be an especially effective way to expand on the rays, guitarfish, and sawfish that we can present too. If you have any suggestions as to good Cretaceous shark micro matrix or want to share any knowledge you have, please let us know !
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