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  1. Prikvačeni tweet
    29. lis 2018.

    Interested in & reconstructing ancient terrestrial ecosystems? Our Methods in Paleoecology edited volume is now available:

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  2. prije 5 sati

    🦷Convergent I never appreciated before: the of the 60 million-year-old gondwanathere Sudamerica (left) 🇦🇷and African (right). 🐘But note the very different scales: mm vs. cm! From collections of and

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  3. 4. velj

    Congrats to , who is now 3/3 on publishing her dissertation chapters! 🍾The take-home message: look to the Eastern Hemisphere if you want an idea of what ancient South American communities were like. 🇧🇴 🇨🇱 🇦🇷 🇨🇴

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  4. 31. sij

    Skull of Homalodotherium, a ~18 million-year-old, bear-sized from Patagonia. 🇦🇷Check out the "remarkable and gradual transition from the first incisor to the last molar" noted by Flower (1874). For this reason, it was named "even tooth beast."

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  5. proslijedio/la je Tweet
    29. sij

    Important new paper on the bizarre South American mammal Groeberia: - compelling evidence that is a relative, as previously thought, and not a

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  6. 27. sij

    My was coauthored with my undergrad research mentor , Holmes Semken, Jr., who first taught me how to identify fragments of and . A well-deserved tribute volume to him was recently published in Quaternary International:

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  7. 10. sij

    🇦🇷 🥩Tiny meat-eating tooth from the of (about 45 million years old). The right half is the flesh-slicing blade; its notched shape works better than kitchen shears because the meat can't slide out!

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  8. proslijedio/la je Tweet
    3. sij

    Happy New Year! is a 4-5 Ma partial dental plate of the large eagle ray, Aetomylaeus. Collected in 1955 from Bone Valley Fm UF-VP specimen numbers will soon exceed 485000!

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  9. 3. sij

    What is your ? 🇧🇴This is UATF-V-002020: a ~15 million-year-old jaw from with one small . The thick later of cement on the outside (also found in ) strengthened and supported this herbivore's ever-growing molars.

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  10. 27. pro 2019.

    ❄️Cingulate snowflakes❄️ Individual shell bones () from a 12 million-year-old glyptodont from . 🇦🇷

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  11. proslijedio/la je Tweet
    26. pro 2019.

    Texting my 8yo niece today and had this exchange. “So cool.” Yep - that’s my girl ;-)

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  12. 20. pro 2019.

    🇧🇴Partial lower jaw of one of the largest 🥩meat-eating ever: Paraborhyaena boliviana. This ~25 million-year-old was the size of a and had continuously-growing canine that lacked enamel.

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  13. proslijedio/la je Tweet

    : New remains of kollpaniine “condylarths” (Panameriungulata) from the early of Bolivia shed light on hypocone origins and... , & Sandrine LADEVÈZE

    , , i još njih 7
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  14. proslijedio/la je Tweet
    13. pro 2019.

    One of my favorite exhibits at the University of Nebraska State Museum; jaws of fossil elephants, many from Nebraska, and mounted skeletons

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  15. proslijedio/la je Tweet
    13. pro 2019.

    For undisclosed reasons I haven't been thinking about rodents much this week. Instead I'm back in . A perfect time to revisit Theosodon arozquetai a species I described with and Dr. Federico Anaya from Quebrada Honda, Bolivia for

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  16. 13. pro 2019.

    🇧🇴 Partial skull of Antawallathentes illimani, a ~25 million-year-old from . It is distantly related to modern caenolestids ("shrew-opossums"), which are small, shrew-like marsupials that inhabit parts of the .

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  17. proslijedio/la je Tweet
    6. pro 2019.

    More Chilean that I'm describing for . This is the only octodontoid skull in my sample but of course the teeth are worn away to basically nothing! With that characteristic H-shape I may be able to ID to genus but that's it!

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  18. 6. pro 2019.

    Two prematurely pruned branches of the family tree (pampatheres and glyptodonts).

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  19. 6. pro 2019.

    Is this a skull? 🐭 Nope! It is Mesotherium, a sheep-sized (South American native "ungulate") on display . 🇦🇷 Its ever-growing upper incisors are rodent-like, but its lower incisors are more like those of .

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  20. proslijedio/la je Tweet
    6. pro 2019.

    Procervulus is the oldest Cervidae known (ca. 19Mya). This is a . What a chance I had to study this skull (BSPG ) and inner structures!

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  21. 6. pro 2019.

    If you look closely on the monitor next to Mauricio, your will see a nice image of a typical (and very characteristic) caviid tooth🦷

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