MeAmLikeRocks Posted October 10, 2022 Share Posted October 10, 2022 Found this while rockhounding pilgrim haven beach this weekend in southwestern Michigan to get anything not picked over during this years season when I came upon this. I have truly no idea what this could be, it looks like a fish to me but would there be any nice fossils this late in the season? And if so could it even be a fish? I thought we had corals, crinoids, bivalves, etc fossilized but this does not seem to be those. Link to comment Share on other sites More sharing options...
debivort Posted October 10, 2022 Share Posted October 10, 2022 At first inspection it looks like limestone with a region of differential mineralization, rather than a fish, to me. To know for sure we'll need better pictures though. In as sharp focus as you can manage, and filling the frame of each shot. Taking the photos in sunlight with your specimen on a hard surface will help a lot. Link to comment Share on other sites More sharing options...
Fossildude19 Posted October 10, 2022 Share Posted October 10, 2022 Looks more like a cross section of a brachiopod or bivalve, to me. Definitely not a fish, however. 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...
MeAmLikeRocks Posted October 10, 2022 Author Share Posted October 10, 2022 So after further inspection of the nodule I actually found that it's a small cephalopod and what I saw as a tail was actually a tentacle half submerged within the concretion. Looking around the other sides and the "head" showed me the cephalopod had landed in the concretion with its tentacles sinking further in while its bell rested on top, appearing at first glance to be the head of a fish outline. Looking at the pictures I took with your head tilted to the side makes it much more obvious as well. Link to comment Share on other sites More sharing options...
Tidgy's Dad Posted October 10, 2022 Share Posted October 10, 2022 Objects don't sink into concretions. Soft part preservation does not occur like your specimen, so it's definitely not a tentacle. It is a fragment of the shell of something, not enough left to ascertain what exactly. Please look up pareidolia. 3 Life's Good! Tortoise Friend. Link to comment Share on other sites More sharing options...
hadrosauridae Posted October 11, 2022 Share Posted October 11, 2022 (edited) 6 hours ago, MeAmLikeRocks said: So after further inspection of the nodule I actually found that it's a small cephalopod and what I saw as a tail was actually a tentacle half submerged within the concretion. Looking around the other sides and the "head" showed me the cephalopod had landed in the concretion with its tentacles sinking further in while its bell rested on top, appearing at first glance to be the head of a fish outline. Looking at the pictures I took with your head tilted to the side makes it much more obvious as well. Nope. 99.9% chance what you have is a fossilized shell of some sort, and it has been rolling around in the surf for years, eroding away into a small, round pebble, so now you only have a random bit of shell, with different sides showing in profile on different sides of the pebble. Edited October 11, 2022 by hadrosauridae 1 "There is no shortage of fossils. There is only a shortage of paleontologists to study them." - Larry Martin Link to comment Share on other sites More sharing options...
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