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MacKenzie Smith

Profile picture of MacKenzie Smith

MacKenzie Smith

@mackenzie-smith
Gainesville, FL
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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 9 months, 3 weeks ago

    9 months, 3 weeks ago
    9 months, 3 weeks ago

    @james-baugh Yes. 100% sure they are brachipods. We are looking at the internal molds. These brachiopods are oriented so the pedicular (ventral) valves are on the bottom. The circular parts are the adductor muscle scares and the part pointing out is the inside of the pedicle foramen.

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    MacKenzie Smith posted a new activity comment 9 months, 3 weeks ago

    9 months, 3 weeks ago
    9 months, 3 weeks ago

    @thomas-jefery These are internal molds of brachiopods.

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 9 months, 3 weeks ago

    9 months, 3 weeks ago
    9 months, 3 weeks ago

    @ilyas-soltani You will need to check Belgium’s national and local laws. Many countries have laws prohibiting the sale of objects on public land (without special permitting).

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 10 months, 1 week ago

    10 months, 1 week ago
    10 months, 1 week ago

    @katie-rider Where was this found? And could it be possible to zoom in to where the bumps are? I’m not 100% convinced it’s Stigmaria (the Lepidodendron roots) because those have indentations. Although the bumps could be a mold (opposite of cast in the preservational sense, not the biological kind)

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    MacKenzie Smith posted a new activity comment 10 months, 2 weeks ago

    10 months, 2 weeks ago
    10 months, 2 weeks ago

    Hi @waylon-sanders this looks more like a brachiopod.

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 11 months, 1 week ago

    11 months, 1 week ago
    11 months, 1 week ago

    Hi @andrea-delaparra these look like gypsum chrystals (CaSO4•2H20). They form in arid environments.

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 11 months, 1 week ago

    11 months, 1 week ago
    11 months, 1 week ago

    @grace-bettenburg It looks like a strophominid brachiopod. Nice find!

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 11 months, 3 weeks ago

    11 months, 3 weeks ago
    11 months, 3 weeks ago

    @chris-million Sorry, this is a rock. Unlike boney fish (like salmon or pufferfish) sharks skeletons are made of cartilage so they are highly improbable to fossilize.

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 11 months, 4 weeks ago

    11 months, 4 weeks ago
    11 months, 4 weeks ago

    Hi @steven-l Do you mind providing a close up please?

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 11 months, 4 weeks ago

    11 months, 4 weeks ago
    11 months, 4 weeks ago

    Hi @claire-challinor it looks modern but I’m not sure. Could you provide a picture of the top please? That is generally the most informative for mammal teeth. Thanks!

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 12 months ago

    12 months ago
    12 months ago

    @pamela-fabrick No problem! I just checked with my girlfriend (the Mesozoic expert) who said because it has a thick rachis (the stem-y part which is actually a part of the leaf) and thick pinnae (the leafy bits coming off the rachis) it is most likely a cycad. However, she said that Bennettitales cannot be ruled out entirely but there is no…[Read more]

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 12 months ago

    12 months ago
    12 months ago

    @pamela-fabrick Ok, yes, Northern Alberta would fit! There are a lot of Cretaceous rocks up there. Sadly though, both cycads and Bennettitales overlap in time then. I will show it to someone more familiar with Mesozoic gymnosperms (I work primarily on Cenozoic angiosperms). I will warn you though that the only way to tell the difference might be…[Read more]

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 12 months ago

    12 months ago
    12 months ago

    Hi @pamela-fabrick this looks to be either a cycad frond or bennetitalean frond. Do you happen to know the state/province/prefecture? I can’t say much without that info. It is a frond (not wood) and it is gymnosperm (not flowering plants and not fern).

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 1 year ago

    1 year ago
    1 year ago

    @cooper-fry Looks like Alethopteris.

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 1 year ago

    1 year ago
    1 year ago

    Stigmaria. Root of Lepidodendron. Nice find!

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 1 year, 1 month ago

    1 year, 1 month ago
    1 year, 1 month ago

    Sorry @amy-sousley this looks like a rock.

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 1 year, 1 month ago

    1 year, 1 month ago
    1 year, 1 month ago

    @stacy-young Sorry, I think this is a rock.

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 1 year, 1 month ago

    1 year, 1 month ago
    1 year, 1 month ago

    @mike-reed I think you have part of a sea robin skull (fish). Family Triglidae.

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 1 year, 1 month ago

    1 year, 1 month ago
    1 year, 1 month ago

    Hi @bernard-weich can you provide us with a little more context please? (Near what city, state/province is it from?)

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  • Profile picture of MacKenzie Smith

    MacKenzie Smith posted a new activity comment 1 year, 1 month ago

    1 year, 1 month ago
    1 year, 1 month ago

    @joseph-johnson Yes, this is Lepidodendron.

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Development of myFOSSIL is based upon work largely supported by the National Science Foundation under Grant No. DRL-1322725. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation.

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