Complete Crinoid I'd

[Bob Saunders]

I Found this  last week on what I believe some call Michigan mud stone? I do not see visible arms and prefer not to disturb it. I also find no ready history of such finds for this S. W. Michigan County. 2 3/8 in or 62 mm long. 

Bob

[Fossildude19]

I don't think it is complete. 

The left hand side looks like a cross section of a larger crinoid stem on top of the longer, skinnier one.   

 

[FossilDAWG]

I agree with Tim, it is a short piece of crinoid stem lying over a long piece of stem.

 

Don

[Bob Saunders]

Thank you I knew it looked strange to this newbie. I will make the label.   here is my best find today. 

[Bob Saunders]

regarding my second item. I have brought out a crinoid stem. not sure if more is buried by the shell? hoping to find a crinoid arm. 2nd image is a depression with what looks to be pyrite. Can someone I'd what the large piece is at the top with a line along it? 

[Shamalama]

4 hours ago, Bob Saunders said:

regarding my second item. I have brought out a crinoid stem. not sure if more is buried by the shell? hoping to find a crinoid arm. 2nd image is a depression with what looks to be pyrite. Can someone I'd what the large piece is at the top with a line along it?

 

In my opinion, the structure you have exposed may be that of an Goniatite or a planispiral gastropod.   The white bryozoans are lovely though!

 

As for the crinoid stem, I'm not sure you would find anything more under the shell.

 

[Bob Saunders]

Thank's,for the comments, here is the back side. 4 3/4 x 4 1/4 1 18-/8th thick. 11.8 cm x 3 cm. I see some sites call it a death assemblage. not a fossil hash plate around here. been using a spear shaped X-Acto knife dental tools and a special fiber glass brush.