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dragonpaws

Found these while having a stroll on the beach on the southwestern tip of lake Michigan, in Illinois just south of the Wisconsin border.

I am about as novice as you can get, and found this site while trying to figure out what these are... I'm pretty confident that the rings are crinoid stems, unsure about everything else.

Hope the pictures are good enough, hard to photograph small things with a phone camera.

Mostly curious about the spike shape on this one

20220615_194143.thumb.jpg.8cb422a6dd4715cb17c1b9eb84d118ca.jpg

The smaller one here is the backside of the one above

20220615_194121.thumb.jpg.14e96e1a119ec93b44997e87263742c0.jpg

I don't know if these two are fossils, they look kind of crystalline but I don't know enough to say.

20220623_205320.thumb.jpg.6f89e98f22479899500ea31dba4bf0c2.jpg

20220623_205147.thumb.jpg.422f63b61729fac5d679071468aa0e6e.jpg

20220623_204034.thumb.jpg.d98b6495fec19cf02d909cd6425a9fb2.jpg

That same spike shape seems to be super common, there's lots of them

20220623_204547.jpg

This one I am near 100% sure is coral, just unsure of what family or grouping it belongs to

20220623_203929.jpg

Edited by dragonpaws
Spelling errors, forgot to caption some pictures
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Fossildude19

3rd and 4th items are Favosites corals.

Last one looks like a rugose coral.

 

The sharp item may be an orthocone cephalopod.  :unsure:

Cropped and brightened:

20220623_204547.jpg.8be807cf2b1cead8b03c3350cbba7933.jpg

 

 

First large item looks like crinoidal limestone.

Cropped and brightened:

20220615_194121.jpg.3958af0646d543c269e19746e8a8d52a.jpg

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dragonpaws
1 hour ago, Fossildude19 said:

3rd and 4th items are Favosites corals.

Last one looks like a rugose coral.

 

The sharp item may be an orthocone cephalopod.  :unsure:

Cropped and brightened:

20220623_204547.jpg.8be807cf2b1cead8b03c3350cbba7933.jpg

 

 

First large item looks like crinoidal limestone.

Cropped and brightened:

20220615_194121.jpg.3958af0646d543c269e19746e8a8d52a.jpg

Thank you so much! 

One other question, the larger favosites coral seems to have been filled in with crystal (the rock is totally dry in the posted picture, the shiny spots are crystals), is there a mineral that normally does that? They are mostly white to dark yellow 

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Fossildude19

Could be calcite or quartz.

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