Cephalopod michigan

[zaneharrin]

Found this in the Coldwater shale formation of South Haven was wondering if anyone had an exact id for it

[Kane]

Looks more crinoidal to me. 

[zaneharrin]

crinoids look like this? I thought the stems were mostly the same length and didn't think they bulbed up near the bottom I know around here mooreoceras and stuff has been found

[Denis Arcand]

it looks like there are square ossicles, maybe they could belong to Xenocrinus. 

[zaneharrin]

I'm looking at the long squid like piece I'm 98 percent sure it's a cephalopod from the Mississippian era just wondering what the exact species would be like mooreoceras but it looks a bit dif also this has a tip all the stems I looked at of crinoids stay relatively the same length

[zaneharrin]

Ofc im not the best at identifying I just know cephalopods are found in the shale I looked through and it doesn't seem to be a crinoid yet again could be wrong

[Ludwigia]

The angle of the cross-section is somewhat misleading, which is understandable why one could construe this to be a cephalopod. However, the cut doesn't show any sign of curved septa or a siphuncle, which one would expect to be seeing in an orthocone nautilus. So I'm tending to also call this crinoid.

[Denis Arcand]

2 minutes ago, zaneharrin said:

I'm looking at the long squid like piece I'm 98 percent sure it's a cephalopod from the Mississippian era just wondering what the exact species would be like mooreoceras but it looks a bit dif also this has a tip all the stems I looked at of crinoids stay relatively the same length

Most likely a crinoid arms in my opinion,  the round end is simply the way it was polish on the round part of the matrix

 

[zaneharrin]

Oh alr was just confused def looks weird I have some different things I think are cephalopods I'll put the. In rn

[zaneharrin]

Still cool never found an arm tbh

[Denis Arcand]

1 minute ago, zaneharrin said:

Still cool never found an arm tbh

I'm not an expert, wait and see what others say

[zaneharrin]

[zaneharrin]

Any ideas on these three

[Fossildude19]

First two in the new grouping are orthocones.

The last one looks more like crinoid, but the preservation is somewhat lacking.

 

The original item may also be part of a holdfast, rather than an arm.

[zaneharrin]

Awesome could you id the species of orthocone?

[zaneharrin]

Also didn't realize orthocones were still alive during Mississippian because I found these in South Haven Michigan in the Coldwater shale formation

[zaneharrin]

Here's a better pick of the first one so you can decide if it's an possible holdfast 

[Ludwigia]

Orthocones existed up to the Late Triassic.

[Fossildude19]

12 hours ago, zaneharrin said:

Awesome could you id the species of orthocone?

No, I can't.

Not even the Genus. Not familiar with your area.

 

On second look, ... these actually both look more like crinoids to me.

 

 

[zaneharrin]

Dangit are you sure it's orthocones I have this piece that might help