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Found 9 results

  1. Mochaccino

    La Brea Tar Pit Bones

    Hello, I have this piece from the Pleistocene-aged La Brea Tar Pits of LA county, California, USA. Alongside the beetle, it has several bones embedded in it which were just described as "mammal". It's possible that more than one species is represented. Can I get a more precise identification for them? Or would I need further prep for that? I know next to nothing of vertebrates but my understanding is that for long bones, the bone ends are most important for identification. Thank you.
  2. How Early Humans May Have Transformed L.A.’s Landscape Forever Science Friday, NPR, August 25, 2023 Uncovering Death by Fire 13,000 years ago Micheal Price, Sciences News, August 17, 2023 La Brea Tar Pits Reveal Clues to Mysterious Mass Extinction By Shana Hutchins, Futurity, August 18, 2023 The paywalled paper is: O’Keefe, F.R., Dunn, R.E., Weitzel, E.M., Waters, M.R., Martinez, L.N., Binder, W.J., Southon, J.R., Cohen, J.E., Meachen, J.A., DeSantis, L.R. and Kirby, M.E., 2023. Pre–Younger Dryas megafaunal extirpation at Rancho La Brea linked to fire-driven state shift. Science, 381(6659), p.eabo3594. Yours, Paul H.
  3. Mochaccino

    Tar Pit Bird Carpometacarpus ID?

    Hello, This is a bird Carpometacarpus wing bone said to be from the La Brea Tar Pits of LA County, California, USA, and it measures 3.7 cm. I have a few questions: 1. Could someone provide a more specific ID on the species? 2. How good of an example is it? I'm aware it's missing the thin section of bone that runs between the two distal ends, but perhaps that's not unexpected given the fragility of bird bones in general. 3. Are there any doubts to the locality? Personally I would've preferred a specimen on tar matrix because I know non-tar-pit localities like Florida also produce Pleistocene-aged bird bones, and with isolated bones it may not be easy to distinguish. In this specimen's favor, I do see the bone is brown in color and there is still some tar matrix leftover on the bones. Even so, I know there are other tar pits, such as McKittrick Pits of Kern County and the Maricopa Pits; is there any way to distinguish localities based on the preservation? The seller is going by the label, which they say is from an old collection put together between 1970's - 1990's. Thanks. Reference Carpometacarpus for comparison: https://royalbcmuseum.bc.ca/Natural_History/Bones/Atlas/Atlas.htm
  4. Mochaccino

    La Brea Tar Pit Beetle?

    Hello, Could anyone identify the species of these two beetles from the La Brea Tar Pits of Los Angeles, California, USA? The large one is 3 cm and the small one is 1 cm. I've heard the terms "water beetle" and "carrion beetle" get thrown around but it's confusing. I think the larger might be Cybister explanatus? Thanks.
  5. The terrifying dire wolf is more closely related to the African jackal according to DNA. https://www.nbcnews.com/science/science-news/prehistoric-dire-wolves-looked-different-those-game-thrones-study-suggests-n1254091
  6. Scylla

    Oh Sh!#. La Brea Coprolites

    When the Doctor asks if you have black tarry stools this is not what they mean. Exceptional preservation of feces at Rancho La Brea: https://m.phys.org/news/2020-03-unprecedented-fossil-feces-la-brea.html
  7. Studying their teeth points to a forrest dwelling hunter of tapirs https://www.nationalgeographic.com/science/2019/08/saber-tooth-cats-surprise-fossils-redraw-picture-of-big-cat/
  8. BigJim2500

    La Brea Tar Pits Bone Fragment

    Here’s an interesting one. I docent at the Page Museum at the La Brea Tar Pits, and while I was talking to some visitors one of them gave me a piece of bone fragment his father found (among many other easier to identify pieces) at the tar pits before the museum was created. I have showed to some of the researchers at la Brea, and their guess was that it was a tibia fragment from some mammal. So far based on my own comparisons, it seems closest to a dire wolf, but if anyone else has any other ideas, I’d love to hear them. Thanks!
  9. Went to Disneyland with the family and was able to visit the La Brea Tar pits and the Los Angeles Museum of natural history. Here is a few pictures. Merry Christmas!
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