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Hi I have a somewhat weird question you can probably help me with: I was currently discussing with some other fossil enthusiasts about how rare dinosaur fossils really are. Obviously, there are areas where no dinosaurs are found and then there are places where dinosaur fossils have been piled up and preserved in large numbers. My friends claim was that dino fossils are not rare at all but are very labourous to collect (and therefore rare). -> I am trying to get an idea about the number of dinosaur fossils per area or even better per volume. For example, If I look at a certain area (for example 1 km2) of a fossil rich formation such as Hell Creek or Morisson and then: - I carefully look at the whole surface, what can I expect to find? - If I would vertically dig through 1m of matrix on the whole area, how many bones or teeth would I find? - If I would vertically dig through 1m of matrix on the whole area, how many museum quality skeletons (eg 30%+ complete) would I find? I am aware that the example above is not practical to do experimentally. However, I am trying to get an order of magnitude (is it more like 0.001 dino or 100 dinos for the given volume). Is there any scientific data available about dino/volume?
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Hi I am currently preparing a bunch of associated bones from Morisson Formation. The fossils have been found near the town Shell. The finder identified the bones as Camptosaurus and I agree with the ID. The jacket contains two femuri, ribs, parts of hip bones as well as a phalanx. It seems that all bones belong to the same animal. However, I am not convinced regarding the phalanx. I think it may not belong to this individual (or Camptosaurus). The campto digits I saw so far looked quite a bit different. If it is not Campto what is it then? Below please find some pictures of the jacked and one partially prepared femur and the phalanx. Size femur: 48cm / 19inch Size phalanx: 10cm / 4inch
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I have seen constant supply of dinosaur fossils from Hell Creek and Judith River... but not Morrison. I don't see any Allosaurus, Torvosaurus, and Ceratosaurus tooth from the market. Some Jurassic herbivore such as Diplodocus and Camarasaurus are available but not as frequently as Hell Creek herbivores. And I haven't seen any Stegosaurus material as well.. There's no commercial digger working in the Morrison Formation? or there is a legal issue? Or just because they are so rare?
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Hey folks, thought I would share what I have been working on all week in my WorkFromHome Office/Lab. (Well, when I am not doing computer stuff). While the Tate (my employer) is closed we have been sent home to work. I brought a few fossils home to work on. The past two weeks I prepped a bunch of Lance Fm micros. I might show them off, but they are so tough to photograph well. This is this week's (and next) project... a Diplodocus skull from the Morrison Formation at the famous Como Bluff in southern Wyoming. We found this tucked into a group of tail bones. It might be from the same animal, it might not. There are a lot of other things in this quarry... typical for the Morrison. But we are calling it Dip because the tail bones are diplos. We will see when I get it all prepped and I go out and learn the difference. The left maxilla is on the right side. The other maxilla is underneath it. "How do you know?", you ask. We already cleaned up the other side. This is the bottom of the jacket. There are loose teeth all over the place in this jacket. Other bones are emerging on the left side of the jacket, and are not yet Ided. This stuff is very delicate and some bones are less than 1mm thick. Yikes. For those taking notes, I am using a variety of pinvices with pokey ends, and a MicroJack #3. All done under the microscope. And lots of Vinac, and a wee bit of superglue. Eventually everything will get sandblasted at about 5 psi with bicarb and holes will be filled with epoxy putty. I will post more next Friday.... Y'all stay safe and have a good weekend. (Edit... I was just thumbing through the post about fossils through the macro lens and took Tim's advice: I downloaded Photoscape and put a copyright into the photo. It was really easy. )
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