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Hell Creek Formation bones, eggs, coprolites?


WestonBarter

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WestonBarter

Hello everyone! My name is Weston and while I studied Geology at Whitman College, I never continued by degree. I am now getting a nursing degree and was stationed in Jordan, Montana for rural  clinical. A contact of mine let me dig on land and I found all these fossils. 

 

Here is a link to my google drive photos. Please help me ID everything and anything you can. I am wondering if the things that look like eggs are actually eggs, as well as what the perfect sphere is. I am also wondering what dinosaur the bones most likely belonged to. I am confident there are coprolites right? I am emailing the Museum of the Rockies and Montana State University to get some help with ID, but I'm curious what you think!

 

https://drive.google.com/drive/folders/1ygoAl7xSULYAMcD-F4i4MzZC31YqL3J0?usp=sharing

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Recommend posting pictures here without requiring downloading from an unknown 3rd party.  Many eggs turn out to be interestingly shaped rocks.

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Ludwigia

@WestonBarter Please post your finds directly and go easy on us at first by just posting a very few of them to begin with. Then we can concentrate better without being overwhelmed by the masses. And please give us a more precise location.

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Troodon

Welcome, I've collected around Jordan and it's definitely rural as rural you can get, enjoyed eating at the Hell Creek Bar, :DOH:.  Like the others have said best to post your photos, links expire over time and easier for everyone to see it versus a 3rd party

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WestonBarter

I everyone, my apologies for the link and mass of photos. Here are a few: they were all found in the hell creek formation, in a little gully on a steep cliff on property near the marina of Hell Creek Park. I am confident about the coprolites and bones, but don't know what bone the dinosaur may belong too. Also, I found the egg looking things in the same vicinity as the coprolites and bone. Any help is appreciated!

 

image.thumb.png.9fbf5bed97782ca0cfa5d92da042ed51.pngimage.thumb.png.d1ddcd419c6370fdf7eb6e5cc39addf3.pngimage.thumb.png.77a1d1dcba612b0b9e22f8b30e39ca44.pngimage.thumb.png.918b1cc5ea5b482a69d5cb5022618b8f.pngimage.thumb.png.925936b8b59a695eff22f2bfea3c0c22.pngimage.thumb.png.8141a13acb293ae45810c73c7ab176f0.png

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Troodon

This is an ilium of a Champsosaurus

Screenshot_20220423-152543_Firefox.jpg.fe8614dc4469ca38ab059662cf112f37.jpg

 

Additional views of 3rd item needed.   First and last item look geologic

 

 

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Pixpaleosky
1 hour ago, WestonBarter said:

 

 

image.thumb.png.918b1cc5ea5b482a69d5cb5022618b8f.png

 

Hi,

 

this look like pisoliths, a type of concretion

 

 

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Troodon

Still need additional photos to confirm but the more I think about it leaning to a ceratopsian quadratojugal.

Screenshot_20220423-164256_Firefox.jpg.169d115bf2ceeadb4be8bd5030d3b9b8.jpg

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WestonBarter

 

 

 

Thanks for your insights everyone. Here are more photos of the presumed ceratopsians. These were all found in the same slope within a few meters of one another. I am also wondering what this sphere is, and how that could be formed geologically. It was literally right next to all these ceratopsian bones. 

image.thumb.png.1d8aa4dd1a27d1e88c6d6394f7918cc1.png

 

 

image.thumb.png.52ec9e1bb460c0da280771f437382d4b.pngimage.thumb.png.686b5057f2bc9270f6a5ad2f58f9acca.pngimage.thumb.png.1f3430fc98a6a68ab5858f52c41f561c.pngimage.thumb.png.f663b3da80574db264273fd18a5c9335.pngimage.thumb.png.422378c739ce1bc0a05855e6da705d09.pngimage.thumb.png.6148a097c1db3fa3415e2974e11d5ad5.png

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WestonBarter

Are these teeth in the last photo?

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1 minute ago, WestonBarter said:

Are these teeth in the last photo?

no.  I do not see any distinguishing characters in the series of bones you posted above them.  Except maybe the divot in the first one.   I call those chunkosaurs.  @Troodon might have some insight.  The ball is a sandstone concretion.  They are very common down here in the Lance Fm (equivalent to the Hell Creek).  They form by chemistry, so I'm told.  Basically something in there causes the sandstone around it to be more solidly consolidated than the rock around it.  When the softer rock erodes from around it, these things plop out and sit there until someone finds them.  

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Troodon

No teeth, do not see enamel.  Which photos are those that I asked for?  Agree with jpc on the sphere

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WestonBarter

Is  my imagination that these are eggs completely wrong lol? @TroodonThese last few below here are of the different angles you requested. image.thumb.png.f585ab3b528778b52c07f8933cff3a81.pngimage.thumb.png.8628a06f502864a7152c580f4fff15b0.pngimage.thumb.png.a43eb4dd256e16f15b497034cedfdcc6.pngimage.thumb.png.dfc730dc374c8369b46c15838a9dceec.pngimage.thumb.png.921b33f1130a7b3d1fc73ea51700c810.pngimage.thumb.png.620109cd63b61dc9bd6acbc66d076296.png

image.png

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Troodon

I'll stay with that call on that bone, open to other suggestions.

Eggs are extremely rare in the HC in fact only a few Dino ones have been found.   One key feature that is not present in your examples is an very thin eggshell.  They look very solid with a fairly homogenous structure.

 

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WestonBarter

 

Ok thanks for the ID, I have a lot of smaller bits, but I don't think they will offer anything specific. 

 

Regarding the egg like rocks, I am probably seeing what I want to see, but this one was found at the same spot, just separated from the conglomerate chunk. I see a "shell" layer there. I also included a couple more photos of the interesting surface pattern on another sample. Any idea what process made that pattern?  

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These last two pix are of ironstone concretions.  In the HC and Lance Fm's they often exfoliate by losing small concoidal flakes.  That is what happened to these.  So, basically they are eroding, and when they do the freeze/thaw causes little bits of the outer layer to spall off leaving these kinda honeycombed patterns.  Cool finds... but not eggs.

 

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