Trace fossil conostichus?

[Sandfossil]

Muskogee, Ok USA.  Could these be conostichus or something else? I have found many in sandstone but never in shale. These were found about 20' below where I normally find the sandstone conostichus. I am including a picture of some sandstone conostichus for comparison. Would the shale ones be older since they were found in the hard blue shale 20' deeper? Thanks for your help.

[Rockwood]

2 hours ago, Sandfossil said:

Would the shale ones be older since they were found in the hard blue shale 20' deeper? 

That is a general rule. A more thorough understanding of the depositional setting is needed to be certain of the relative timing however.

[westcoast]

They look more like concretions than Conostichus to me, and concretions are far more likely in shale.

[Sandfossil]

@westcoast and @Rockwood Thank you both for responding  to my post. I appreciate your time. I did find another one but much smaller. 

Edited October 31, 2022 by Sandfossil
Added content.