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TheGoblinKing

Trilobite Plate Fragment from MN Decorah?

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TheGoblinKing

I found this chunk of shale poking around a bluff side a while back near Lilydale Park in Minneapolis, MN.

The fragment pictured is translucent and is slightly concave, it reminds me of a cheek plate but Im not sure.

I'm new at this so I'm pretty clueless, I appreciate any help. :)

 

20200219_161653.thumb.jpg.4e4874a6f400cc976ada34f1e8423d20.jpg  1582150430148864112218976605248.thumb.jpg.5d5befd5edd319625d9c5cd6f7d32346.jpg20200219_161745.thumb.jpg.ba64e4c65afca6038ea64910d23e26f8.jpg

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aek

It's a Asaphid fragment, probably Isotelus.

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Tidgy's Dad

Hello, and a very warm welcome to TFF from Morocco. :)

Agree with probable Isotelus trilobit. 

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TheGoblinKing

Thats awesome, I dont have much when it comes to trilobites so even this fragment is exciting. :D

Thank you very much for the help! The warm welcome is very much appreciated aswell, cheers from Minnesota! :)

 

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Scylla

Hard to tell on my cell phone, but it looks like the other fossils on the plate are broken, indicating a high energy depositional environment. I see brachiopods and possible crinoid and bryzoan fragments too. 

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TheGoblinKing
2 hours ago, Scylla said:

Hard to tell on my cell phone, but it looks like the other fossils on the plate are broken, indicating a high energy depositional environment. I see brachiopods and possible crinoid and bryzoan fragments too.

 

Tons of crinoid segments and brachiopods in these plates! This area of the Ordovician sea covering Minnesota was particularly shallow from my understanding. I would assume that tropical wind and storms battered it often causing erratic currents and waves. Thats just speculation on my part though, Cheers!

Edited by TheGoblinKing
Spell check

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