Jump to content

All Activity

This stream auto-updates     

  1. Past hour
  2. Back at full power with a few finds

    See above. The Cadocerases shown, for instance, are pure calcite steinkerns with no remaining shell substance.
  3. Back at full power with a few finds

    You are right with oolithic. Lots of iron and calcite. Sandy/clay limestone. This member of the geological formation is called "Rotes Erzlager"-Red Ore Bed- since it was mined from the middle ages up to WWII for its iron. It's nevertheless not all that difficult to prep, since there is usually a good separating layer. However the iron tends to "rust" or erode away lots of fossil substance, so a good number of finds turn out to be throwaways.
  4. Back at full power with a few finds

    I was wondering the same thing. It looks like some or all of the shell in some cases was dissolved away at some point.
  5. The Permian was definitely weird. Pangea, the world dried out after the coal swamps, and all those weird vertebrates. Plus all kinds of inverts... all those spiny brachs, the last of the trilobites and tetracorals, etc. The times before extinctions are interesting, being the last of an old world.. but also I find the times after extinctions are interesting in their own way, as the start of new worlds. Right after an extinction might be slim in diversity, but it's interesting to see what survived and would later diversify into what we see in younger strata and how quickly. The early Triassic and the Paleocene come to mind. (Of course nearly every period qualifies by that criterion - Ediacaran/Cambrian, Ordovician/Silurian, Devonian/Carboniferous, Permian/Triassic, Tri/Jurassic, Cretaceous/Paleogene.. and we're living in probably the next big extinction now!)
  6. Back at full power with a few finds

    Thanks Monica
  7. Is that what that fake crab meat is??
  8. Shark tooth display for educational program

    nice collection you'll definitely get people to go out side and look for their own after seeing that.
  9. Scalarituba

    Nice Swiss Army Toolbox..
  10. Today
  11. Hello I have a juvenile rex tooth from Lance Formation to trade looking for dinosaur fossils thats are not from morocco.
  12. Scalarituba

    Swiss Army knives and cell phones do not make good scales. Let’s talk now about the “really cool” fossil.
  13. Scalarituba

    No, I don’t agree. Not everybody has a Swiss knife or a lighter, and not all phones are the same size. Why not make the effort to give a measure or to put a rule on the picture when it is so easy to get one? In addition, there are so many new posts every day on TFF that I refuse to waste time going to another site to find out how much a piece measures, be it American or otherwise. I repeat: when you ask for an identification you can make a small effort towards those who will spend time doing a service! I’m sorry if I misunderstood what you said. Coco
  14. Proportional Geologic Time Scale

    OK, one more update with edits recommended by @DPS Ammonite plus a few other minor tweaks... What a lot of tedious work this thing has turned out to be! Of course the editing is never done and likely there are other things I should change, but hopefully not too soon. I'm going to go do something else now!
  15. Marine coprolites? Maybe?

    Welcome to the Forum Kimberly. You have pieces of oysters and or bivalves in a Cretaceous rock that is sandstone or limestone. Take a look at this geology map to see if you can find out what formation they are from. Let us know what you find out. https://txpub.usgs.gov/txgeology/ A good source of info for north Texas fossils is: http://northtexasfossils.com/ Also, consider joining the Dallas Paleontology Society: https://www.dallaspaleo.org/
  16. Hi, Could you put close-up pics with the otoliths gathered by similarities, for there I see at least three different forms. Coco
  17. Largest Carnivorous Land Mammal described

    It's not your post that bothered me. It's that in the articles that both links access they never mentioned land mammals. One would expect those who create such articles to better define the parameters.
  18. Largest Carnivorous Land Mammal described

    Thanks for pointing out the semi obvious Mark and @gigantoraptor Gigantoraptor was trying to point out the same thing when he mentioned marine mammals. I have edited my post to say largest land mammals. Thanks for the correction.
  19. Largest Carnivorous Land Mammal described

    I believe they meant land mammals, even though they never actually said so.
  20. Beware of sellers who refuse to use Paypal

    @Andy AJPlai and all other TFF members with stolen photos of their fossils should tell the dishonest seller that they own the copyright to the photos and the fossils are still owned by the members and are not for sale.
  21. large fossil in coastal wall California

    Your guess is better then mine. I was just looking to see if fossils where found in my area. If you google Avila beach sea cow the artical will come up. This is what it looked like
  22. large fossil in coastal wall California

    Or perhaps the Steller's sea cow has gone south at one point?
  23. Shark tooth display for educational program

    That is an awesome display Dino Bo. I love the monster Cretodus. It is nice to see you finally let the forum know what you are doing my friend
  24. large fossil in coastal wall California

    Nathan, our coastal shores are littered with whale remains. Bones are constantly being plowed up in the fields and vineyards around here. We also get "modern" whale bones washing up on shore after big storms. Remainents of our whaling days of yore. When you say "Sea Cow" are you referring to something like Manatees?
  25. Help me identify this ground sloth...

    Cloepus? doesn't exist. Did you mean Choloepus? Bradypus are three-toed, Choloepus are two-toed. Your question is illogical.
  26. Marine coprolites? Maybe?

    Hello, I find a lot of what I believe to be marine fossils from the Cretaceous period on my land up in Grayson County, North Texas, but I am not certain what kind of fossils they are. Here are pictures of what I think are coprolites? Thank you in advance for your help in identification.
  1. Load more activity