tombk Posted July 23, 2021 Share Posted July 23, 2021 Hi all. I posted about a week ago in this forum with what I thought was a Maclurites fossil I found in the Galena Group in Illinois: http://www.thefossilforum.com/index.php?/topic/116602-ordovician-maclurites/. Others agreed with me. There are two parts of this fossil that I wonder about. One is fairly large and may be a piece where the outer shell of the Maclurites broke to reveal an inner layer. It may also be a second specimen that was fossilized along with the Maclurites, replacing part of it. (I bet there's a term for that, but I don't know it!) This part of the specimen stands out by virtue of being browner than the rest of the specimen. The second part presents a similar question. There is either an inclusion of a small gastropod near what I think is called the aperture of the Maclurites, or the Maclurites is fractal in form. Can somebody weigh in on what these two parts might be? I took pictures of the large part (broken outer shell vs. second fossil inclusion) from a number of different angles and distances and with some different lighting to try to help with identification. The final picture is the second, tiny gastropod vs. small, fractal portion, although you can see this in some of the other images also. (My money is on a second, tiny gastropod, although fractal structure would be way cooler!) First angle A closer view at this same angle Closer view from the same angle but with different lighting A view from a second perspective And closer up with this second perspective A third perspective Closer from third perspective And a bit closer from third perspective and with different lighting A fourth perspective Closer view from fourth perspective A fifth and final perspective And closer from fifth perspective And even closer from fifth perspective Finally, the small gastropod or fractal portion Thanks for your help! Link to comment Share on other sites More sharing options...
Fossildude19 Posted July 23, 2021 Share Posted July 23, 2021 Looks like part of something else, perhaps another Maclurites, like the smaller one. I think only some careful preparation may show what it is. And even then, perhaps not. 1 Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
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