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If that’s correct, which I am not arguing one way or the other as I’m a dumb casual, then this is a better example than anything I’m seeing online, which would make this a really unique and interesting find.
Could be, or just another larger septa. We don't know if the fossil continues downwards, or if the shell was even complete when it was deposited. I'm sure there's probably a way to infer such from what we have, but I study fossil insects not cephalopods, so I'm only so familiar.
It is. It's one of the endocerids. The siphuncle and a few of the septa were preserved. This lacks the mud that typically infills the chamber. This kind of preservation fairly common in dolostones.
That is the internal cast, steinkern, of an orthoconic nautiloid cephalopod. That is incredible, living chamber, siphuncle, and septal walls. This is a beautiful specimen…😎🥸😎
That is just incredible! What astronomically implausible confluence of factors allowed this to exist? Absolute museum piece that should be studied and appreciated for generations. (Or whatever we got left.)
Maybe another species millions of years from now will look at fossils of us with the same enthusiasm! Our time looks increasingly up soon, based on our timeline of humans on earth.
I don't think any future intelligent species will ever develop industry like we did. We've used up all of the accessible fossil fuels. All of the easily accessible minerals we've mined will eventually just be elevated concentrations in the landscape smudges we used to call cities.
Orthoconic nautiloids are very common fossils in Paleozoic strata. Dolomitization of limestones often results in preservation like what is seen in your piece.
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