Mazon Creek Arthropod ID

[connorp]

I had this Mazon Creek arthropod open recently. It was collected from the Braidwood fauna (freshwater/terrestrial), so initially I thought this was just a tiny syncarid shrimp as they are the most common arthropod to find here. However looking at it closer, I'm not so sure and was hoping for a second opinion. In particular, the legs are short and spiny and do not look like shrimp legs to me, although I may be wrong.

 

 

Here are images of the positive and negative sides of the "head", middle, and rear, respectively. I put "head" in quotes because I can't tell if this is the head of the animal, or if it continues more into the concretion.

 

 

 

@RCFossils @Nimravis @Mark Kmiecik @deutscheben @stats @bigred97 @flipper559 Any thoughts are appreciated.

Edited July 18, 2022 by connorp

[Lone Hunter]

Kinda reminds me of an insect nymph.

[RCFossils]

Possibly Hesslerella shermani 

[Mark Kmiecik]

I'm not getting a shrimp vibe from it either.

[stats]

Dasyleptis?

 

Cheers,

Rich

 

[connorp]

9 hours ago, RCFossils said:

Possibly Hesslerella shermani 

 

3 hours ago, stats said:

Dasyleptis?

 

Cheers,

Rich

 

Both seem like possibilities to me. I know both of these have been found at this site before. I might have to bring this one to an ESCONI event in person sometime. Thanks for your thoughts.

Edited July 19, 2022 by connorp

[Missourian]

Is Acanthotelson a possibility?

[connorp]

6 hours ago, Missourian said:

Is Acanthotelson a possibility?

That was my first guess when it opened since Acanthotelson is by and far the most common arthropod in the Braidwood fauna, but legs seem very short for a shrimp.