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Can anyone identify this dinosaur?

OpiumOpium regular
edited June 2009 in Help / Advice Forum
So the other day I went to the Museum of Natural History and in the fossil hall I saw this beauty hanging from the ceiling:

411566517_e58a8dd968.jpg

Unfortunately though, I forgot to write down the specific name of this specimen and now that I am going through the photographs I made that day and storing them with species labels etc., this is the only one that I can't seem to find the name of by Googling or on the AMNH website (they only have a few of their fossils listed, not all). So I was hoping a dinosaur expert or AMNH connoisseur here can tell me the exact species name. I know it must be some kind of pliosaur, but which exactly?

Opium on

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    Shazkar ShadowstormShazkar Shadowstorm Registered User regular
    edited June 2009
    hmmm i was just there yesterday, ummm, hmmmm

    i know i looked at that
    but i totally forget

    Shazkar Shadowstorm on
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    FyreWulffFyreWulff YouRegistered User, ClubPA regular
    edited June 2009
    Ichthyosaurus

    FyreWulff on
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    DelzhandDelzhand Hard to miss. Registered User regular
    edited June 2009
    FyreWulff is correct. Also, I'm almost certain that Ichthyosaurs were not technically dinosaurs.

    Delzhand on
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    Iceman.USAFIceman.USAF Major East CoastRegistered User regular
    edited June 2009
    Looks like a "special" dolphin from google images.

    Iceman.USAF on
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    ImprovoloneImprovolone Registered User regular
    edited June 2009
    Delzhand wrote: »
    FyreWulff is correct. Also, I'm almost certain that Ichthyosaurs were not technically dinosaurs.

    Yes, technically a dinosaur walks on land and is called that based on its hip structure.

    Improvolone on
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    DuffelDuffel jacobkosh Registered User regular
    edited June 2009
    Delzhand wrote: »
    FyreWulff is correct. Also, I'm almost certain that Ichthyosaurs were not technically dinosaurs.
    Yeah, they were actually aquatic reptiles.

    I'm not 100% that skeleton is an ichthyosaur, though. It probably is but the picture is taken at a weird angle and I can't really get a bead on what the skull looks like, but that's probably what it is.

    Duffel on
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    DelzhandDelzhand Hard to miss. Registered User regular
    edited June 2009
    Is the hip structure characteristic why things like Dimetrodon aren't considered dinosaurs either?

    Delzhand on
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    DuffelDuffel jacobkosh Registered User regular
    edited June 2009
    Yeah, that and other kinds of genetic/cladistic reasons I think. IIRC Dimetrodons were actually really old - like, early Triassic/Mesozoic or maybe even in the very late Paleozoic - before true dinosaurs had became very prevalent. Dimetrodon is a big crazy reptile, but not a dinosaur, which is something specific and distinct from reptiles in general.

    It's been a long time since I took that class, though, so somebody else can probably clarify much better than I can.

    EDIT: Looks like Dimetrodon was actually a theropsid, or a mammal-like reptile and did in fact live in the Permian period. Neato.

    Duffel on
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    ThylacineThylacine Registered User regular
    edited June 2009
    Delzhand wrote: »
    Is the hip structure characteristic why things like Dimetrodon aren't considered dinosaurs either?

    There are both "bird hipped" and "lizard hipped" dinosaurs. Ornithischian are the bird hipped, and Saurischian = lizard hipped. But, Dimetrodon wasn't a dinosaur, and it didn't stand up like dinosaurs...it's legs were more out to the side like a komodo dragon, or many of todays lizards.

    :( I read too much dinosaur shit as a kid.

    Thylacine on
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