Rachel Narducci

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    1 week, 1 day ago

    Hi, @pdon-pinkham,

    I think preparation for this specimen first comes down to; what do you want the outcome to be? Are you hoping to remove all of the matrix around each individual specimen? If this was for my personal collection, I would probably keep the entire block intact and just scrub it down with a toothbrush and some water. Maybe chip away some of the limestone around each individual specimen to reveal more of the face using a carbide tool or air scribe (I’m not sure how hard this matrix is). If you have no time constraints, I know people who just place these blocks in their yards and allow the rain to do the work. I have never used acetic acid in fossil prep, but when we use formic acid, it is a 7% concentration mixed with water. I’m not sure if this would be best to use on your specimen though because there are so many individuals in the one block. Also, these acids are considered hazardous waste, so they will need to be disposed of properly, and that will vary depending on your location.

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    Rachel Narducci and Jayson Kowinsky are now friends
    3 months, 2 weeks ago
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    3 months, 4 weeks ago

    The Association for Materials and Methods in Paleontology recently uploaded some great fossil prep videos: https://www.youtube.com/channel/UCC9-2xLHQWdcfRxWLkpx8eg

     

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    4 months ago

    The purpose of this topic is to share pictures, experiences, etc. from the Montbrook Fossil Dig. The dig is an opportunity for volunteers of the Florida Museum of Natural History to gain paleontological field experience and help the vertebrate paleontology department with this excavation. Check out the ‘Montbrook Fossil Dig’ Museum Voices blog or the FLMNH ‘Volunteering in the Field’ web page for more information and the application to volunteer.

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    Rachel Narducci replied to the topic Montbrook Forum? in the forum Ideas for New Forums
    4 months ago

    @egardner Yep, that sounds good to me! I’ll go ahead and start it now.

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    Rachel Narducci replied to the topic Montbrook Forum? in the forum Ideas for New Forums
    4 months ago

    @egardner, I think that is an excellent idea! I would create the new forum right now, but I’m not 100% sure how to do it properly. I’ll have to check with you about that, maybe on Monday? I could also link to it through the Montbrook Facebook group and Museum Voices blog, which should bring in more myFOSSIL users.

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    Rachel Narducci posted a new activity comment
    4 months ago

    Thank you so much, Bruce! Somehow I missed this update. I really enjoyed preparing and having the opportunity to present the webinar.

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    Amy Stephens and Rachel Narducci are now friends
    4 months ago
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    Rachel Narducci replied to the topic Is this a fossilized bone? in the forum What Is It?
    4 months, 1 week ago

    @rebecca-mussetter If this were a game show, my first guess would be a coral. That is what the texture most looks like to me. Can you see any of it coming out of the other side? It’s possible that it could be the porous area, maybe around the skull of a vertebrate. With all of the invertebrates, I would guess whale.  (Like from a whale fall where invertebrate organisms colonize a dead whale skeleton.)

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    Rachel Narducci replied to the topic Is this a fossilized bone? in the forum What Is It?
    4 months, 1 week ago

    @rebecca-mussetter If this were a game show, my first guess would be a coral. That is what the texture most looks like to me. Can you see any of it coming out of the other side? It’s possible that it could be the pourous area, maybe around the skull of a vertebrate. With all of the invertebrates, I would guess whale.

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    Paul Morse and Rachel Narducci are now friends
    5 months, 1 week ago
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    Mackenzie White and Rachel Narducci are now friends
    5 months, 3 weeks ago
  • Profile photo of Rachel Narducci
    5 months, 3 weeks ago

    @joyce-drakeford Thanks for you question and for attending the webinar! So, there are different grades/levels of the polyethylene foam. If you are not using the archival one that might be why it is yellowing (the archival kind should not yellow under the proper conditions). So if it is the archival type, the next, probably most common cause, would be exposure to UV light. That is mostly okay for your fossils but it could break down the glues over time. It could also be caused by things that would harm your fossils over time like heat/humidity or oxidation. I also found this PDF with some info: http://fxi.com/assets/pdf/up_06_quality/Discoloration_Info_Sheet_-_111010.pdf

     

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    Rachel Narducci posted a new activity comment
    6 months ago

    Hi Lee @lcone – I just sent you an email! I’m sorry it is so late, I missed this message. My email address is: [email protected] in case it gets sent to a spam folder. Thanks for your interest in volunteering at the dig site!

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    Rachel Narducci and Nathan A Jud are now friends
    6 months, 3 weeks ago
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    7 months ago
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    Michelle Barboza and Rachel Narducci are now friends
    7 months, 2 weeks ago
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    Rachel Narducci and Claudia Grant are now friends
    8 months, 1 week ago
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    8 months, 3 weeks ago

    It would be unfair of me to answer because I’ve spent too much time staring at the real one! haha

  • Profile photo of Rachel Narducci
    9 months, 1 week ago

    @lcone,

    These are the associated Mesohippus leg pieces! Better late than never! And definitely a great find.

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