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  • #104060
    Jim Chandler
    Participant

    If it’s a fossil it could be a coral.  It could however be an igneous rock like pumice. Test the rock with some weak hydrochloric acid (also called Muratic acid dilute to 5 percent. If it fizzes it’s more likely to be a fossil.

    Also check with a museum or school.

    #94916
    Jim Chandler
    Participant

    Where did you find it? Mostly they are casts of some kind of Gastropoda (snail). But the location and something in the picture for scale ( a coin or ruler) will give more clues as to its identification.

     

     

    Jim Chandler

    #93023
    Jim Chandler
    Participant

    <p style=”direction: ltr;”>Great jobs Louis,</p>
    What is the matrix and what holds it together?

     

    Jim

    #93015
    Jim Chandler
    Participant

    Hi Bill,

    It looks most likely to be ripple marks. Here are some references I found:

    Ripple marks and trace fossils in the Rose Hill Formation

    I would certainly contact this geology professor as he seems knowledgeable in the area.

     

    https://ngmdb.usgs.gov/Geolex/UnitRefs/RoseHillRefs_3632.html

    Of the fossils mentioned here (brachiopods, ostracodes, trilobites, and tentaculitids) it does not match most of these.  Only perhaps some ostracod marks.

    https://www.osti.gov/biblio/5791090-origin-middle-silurian-keefer-sandstone-east-central-appalachian-basin

    It definitely looks like it was formed on an old shoreline.

    When taking pictures also try to include something for scale.  Are there any more edges of this pattern or does it pretty well cover the whole rest of the sample?

     

    Let me know what you find out.  I have enjoyed collecting fossils in MD. It has something from every geological period.  I have attached a list of MD fossil sites were I collected in 2015.

    Let me know what you find out.

    Jim Chandler

     

     

     

     

     

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    #69627
    Jim Chandler
    Participant

    It could also be a pseudo-fossil.  What kind of rock is it?

    Jim Chandler

    #69626
    Jim Chandler
    Participant

    Looks promising.   Look at a geological bedrock map of your area to see if your area has bedrock for the time of dinosaurs. Show it to a paleontologist in your area. Put a coin or ruler in your picture for scale.

    Jim Chandler

    #47108
    Jim Chandler
    Participant

    Hi Dave,

    Cool fossil!  I am an amateur like you. I did some searching on the web and found an article about brachiopods with spines. Perhaps the author has the knowledge you are after. Also there are some references about identifying similar brachiopods you mentioned. Good luck hunting let me know what you find out.

    https://woostergeologists.scotblogs.wooster.edu/2014/07/18/woosters-fossils-of-the-week-silicified-productid-brachiopods-from-the-permian-of-west-texas/

    Jim Chandler

    #41938
    Jim Chandler
    Participant

    Hello Apostoulos,

     

    “Horn coral. Horn coral, any coral of the order Rugosa, which first appeared in the geologic record during the Ordovician Period, which began <b>488 million years ago</b>; the Rugosa persisted through the Permian Period, which ended <b>251 million years ago</b>. (Britannica Encyclopedia)”  I know virtually next to nothing about Crete geology.  If I read this 1996 reference correctly  ( http://www.uqac.ca/mhiggins/chapters.html )  It seems like the geology of this area is much younger except for maybe the Permian Period.   Let me know what you find out about the Vatos unit.  I live in Maine, USA.  Perhaps the Natural History Museum of Crete can help.  http://www.nhmc.uoc.gr/   or http://www.nhmc.uoc.gr/en

    Also see: https://en.wikipedia.org/wiki/Rugosa

    Jim

    #41850
    Jim Chandler
    Participant

    Possibly a horn coral. Where did you find them?

    #30488
    Jim Chandler
    Participant

    Perhaps this is a calyx.  Good eye to  pick up this subtle detail. However it is too indistinct to be sure it is a calyx.  Check out some images of better preserved calyx at:https://www.google.com/search?q=crinoid+calyx&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi43eLPlP7YAhXHg-AKHX30CVoQ_AUICigB&biw=1280&bih=630#imgrc=_

     

    Jim

    #30461
    Jim Chandler
    Participant

    Most definitely crinoids. You could probably also find them in a nearby outcrop.

    Jim

    #29536
    Jim Chandler
    Participant

    Hi Gail,  I have not collected any fossils in the West so I am not very familiar with fossils in that area.  My best guess to get the discussion going is that it is a bone of some kind. (maybe a hoof, but I am very much guessing.)  If I found a similar fossil in a marine sediment I might be tempted to call it a coral, but I think it may be a bone.  Where in South Dakota did you find it.  Combining the location with a geological map may help you narrow down what kind of environment it was formed in. A simple map is found at http://www.sdgs.usd.edu/geologyofsd/geosd.html  

    Also look at websites about the fossils of South Dakota.  https://www3.northern.edu/natsource/earth/Fossil1.htm  

    If it is a bone it does not look like it has much matrix to remove.  Hopefully someone more knowledgeable of fossils in your area will respond too.

     

    #25336
    Jim Chandler
    Participant

    No poster was attached. I see it now.  Thanks.

     

    #24052
    Jim Chandler
    Participant

    The “Poka-dotted” fossils in photos 1&2 are bryozoans.

    Jim

    #23050
    Jim Chandler
    Participant
    #23035
    Jim Chandler
    Participant

    It is probably not possible with a small piece to identify a dinosaur bone to this level.  There is a good discussion of this on the fossil forum:

    http://www.thefossilforum.com/index.php?/topic/38748-could-this-be-real-t-rex-bone/

    My only direct experience with dinosaur bones was on a tour of the Gobi desert.  We were told if you licked a rock and it stuck to your lip it was a dinosaur bone, if not it was a stone.  So we spent the afternoon in the desert licking stones.

     

    Jim

    #18343
    Jim Chandler
    Participant

    I agree. Where can we go for oysters?

     

    Jim

    #18223
    Jim Chandler
    Participant

    Yes thanks.

    Jim

    #18219
    Jim Chandler
    Participant

    Hi Lance @lance-comfort,  I am just trying to learn about fossil identification so I think your knowledge base is much greater than mine.  I did do some web searches about Lopha species.  I did find one East Coast citation in North Carolina for Lopha frons

    http://discoverlife.org/mp/20q?guide=Mollusca_Bivalvia_species&flags=HAS:

    Also checking further the name Lopha frons is not accepted and the valid name is:  Dendostrea frons

    http://z14.invisionfree.com/Conchologist_Forum/ar/t2410.htm

    Might this be what you found?

    What resources do you find best for identifying invertebrate fossils?

    Jim Chandler

     

    #18002
    Jim Chandler
    Participant

    Thank you Eleanor for a wonderful webinar series.  I am glad for your email on how to become certified by listening to the webinars online and making a comment here on each webinar.

    I have watched each webinar online and here are my comments and questions:

    Session 1 (Fossil Collecting):  Nice to hear how important how amateur paleontologist is to donated fossils.  I am most appreciative to joining fossil clubs.  I am a member of the Delaware Valley Paleontological Society and Penn Dixie.  This is how I found out about this project.  Maine does not have many fossils but has an excellent publication Maine’s Fossil Record by Lisa Churchill-Dickson available from the Maine Geological Survey. http://www.maine.gov/dacf/mgs/explore/fossils/fossil-record.htm

    I used to start my research on fossils sites at :  http://www.fossilsites.com/STATES/ but this website is no longer available. Do people know where to find these state lists?

    The resources mentioned by Jay are very good.  Good to know about the Neophyte guide to vertebrate fossils.

    I will join the fossil forum soon as well.

    Session#2 (Field notes 101): This webinar was excellent.  I have found Mancos app very useful and an amazing resource for identifying the formation for any site. This webinar is essential for the serious paleontologist.

    Session#3 (Excavating Fossils):  This webinar was well organized and a great resource to share with students.  It was good to focus on ethics as well as collecting law.  The case studies were a good way to handle this diverse topic.  I work mostly with invertebrates, so it was good to see examples with a vertebrate example.  It would be good to have an invertebrate case study.

    Session #4 (Fossil Preparation):  I like the progression of tools from simple to more complex tools.  You gave enough details so that each method could be implemented.  In doing a cast do not forget to mention spraying the specimen and mold with release solution.  If you forget this step (from experience) you can have a big mess and ruin either the specimen or the mold.  Great information on cataloguing and storage. I was not aware of the problem of storing fossils in wood. I am also now using B-72 to seal labels.  The links were most useful.

    This series and project has been most helpful to developing my skills as an amateur and improving my practices to a much higher level.  Thank you.

    Jim Chandler, Bryant Pond, ME

     

    It would be most helpful in a future video or webinar to do one on fossil identification and resources for identification.

Viewing 20 posts - 1 through 20 (of 22 total)