A Few Finds in the Ordovician of Iowa to ID

[minnbuckeye]

A post was made a few weeks ago showing the Decorah Shale finds during my last fossil hunt of the year. During that trip, a section of Stewartville/Galena/Ordovician was visited too and I just finished processing my finds. In the bucket were a few unknowns that I am hoping to make known!!!

 

1. My guess is likely correct for this one. Beekite? I notice on the picture that that a piece of Isotelus trilobite is peeking out in the lower left corner and is probably the reason for the beekite formation. I have searched through Galena countless times and have not run into this before.

 

 

 

2. This one has a distinct ridge running down it and has more subtle ridges running perpendicular to the central ridge. They are difficult to see in the photo.

 

 

 

3. This small almost circular fossil (4mm) has a peculiar ridge down its center.

 

 

 

4. Finally, this "cross" measures 8 mm. It does not appear to have characteristic of a bryozoan on its surface. If it is part of a deeper fossil, I was wanting to know what it was before I explore further with my Dremel.