Mazon Creek ID help

[Patrick K.]

Hi All! 

 I have a lot of concretions soaking for freeze thaw, but while I wait I have a few of the open ones I found that were pretty covered in mineral deposits, that are now cleaned. I know most are probably not ID-able, but I would love help with some identification if possible! 

 

This first one is my favorite - the might be a molt or badly preserved animal but there are some clear abnormalities that I hope can get me an ID or at least narrowed down to some guesses? Mainly the 4 antennae or possibly tails (like in a mayfly) - they are only visible from certain angles, and in some of the pics, so my kiddo added drawings along the tails/antennae in one image  - they run clear out of the edge of the concretion. Also an area that looks like wings or legs. 
#1

2

3

 

4 - both sides

 

5 - I wish this was a fish - I doubt it is or can even be ID’d but my daughter can make any of my badly preserved fossils look like fish on her phone editor - it’s pretty amusing actually. The center has signs of a skeleton or maybe plated carapace, hard to capture in pictures. Here is the fossil and one w w her artistic additions  

 

 

6 - the problematic H?

 

7 - bark? 

 

8 - more bark?

 

9

 

10

 

11 - I lost the other half to this one - I forgot to zip up my backpack while army crawling in pit 11. And I think I messed up the vinegar soak and ruined some

details.  

 

12 - I can not get a good picture of this. The animal looks to have been smooshed like a T along a ridge right in the middle, it was covered in deposits. The really looks like what I saw in RCfossils gallery and Google images - Gilpichthys greenei - I can 100% see the shape, just no details. 

 

13-Lastly this large concretion that looks so odd. The edges were broken off both sides so perfectly before it opened at some point it almost looks cut. This little chicken neck looking thing is all that is there. 

 

Thanks in advance!

 

Patrick 

Edited April 15, 2023 by Patrick K.

[Runner64]

I am terrible with flora so can't provide exact ID's, but:

 

1. A shrimp molt

2. Fern (Macroneuropteris?)

3. Annularia

4.Unsure on fern species

5. Unsure, maybe a worm?

6. Etacystis (H animal)

7. Unidentifiable piece of vegetation

8. Unidentifiable piece of vegetation

9. Unsure on fern species

10. Unsure on fern species

11. Maybe coprolite?  Don't see anything super diagnostic

12. Body looks a lot like Gilpichthys but hard to say since it is a bit eroded.  Might need more opinions

13. Don't believe it is a fossil

[Patrick K.]

Thanks for the help @Runner64! 
 

 Think that is the 3rd or 4th time I’ve been fooled into a bit of beginners excitement by a shrimp molt!  I thought this may be different because it had antennae & didn’t have the many legs like the few others I’ve found. Getting a feel for the many shapes of the molts isnt going to happen overnight I guess!