Mazon Creek millipede?

[connorp]

I had this Mazon Creek concretion open today. It was collected from the Braidwood biota (freshwater/terrestrial). My best guess is a partial millipede (Amynilyspes?) but I'm not sure and wanted to get other opinions. Thanks for any help.

@Nimravis @deutscheben @bigred97 @RCFossils @stats @flipper559 @Mark Kmiecik

 

[jdp]

Part of me wonders if those might be vertebrae 

 

However, I think this is a strangely-preserved crustacean. Maybe Tyrannophontes?

Edited October 26, 2022 by jdp

[flipper559]

Can you see any of the legs Connor ??

I think it looks kind of shrimpy.

I am curious as to others thoughts.

 

Rock On !!

 

Phil 

[connorp]

55 minutes ago, flipper559 said:

Can you see any of the legs Connor ??

I think it looks kind of shrimpy.

I am curious as to others thoughts.

 

Rock On !!

 

Phil 

Nope, no legs are visible. It is very three-dimensional, much more than any shrimp I’ve found.

[RCFossils]

I am leaning towards this being a coprolite.

 

[deutscheben]

I have definitely seen images of some fairly inflated Acanthotelson specimens (including a few in Ralph's purchased collection thread), so I wouldn't rule that out for this portion here. 

[jdp]

1 hour ago, connorp said:

Nope, no legs are visible. It is very three-dimensional, much more than any shrimp I’ve found.

I definitely see at least one jointed appendage in there.

[jdp]

[daves64]

Looks like the segments overlap sort of like a lobster or crawdad/crayfish tail (wasn't sure which you might call them there).

[connorp]

1 hour ago, jdp said:

Didn’t notice that. I’ll look at it under a microscope tonight.

[Mark Kmiecik]

I'm in the crustacean of some sort camp.

[stats]

I'm in the shrimp camp.

 

Cheers,

Rich