Evactinopora? Bryozoan ID

[Collector9658]

I believe this is an Evactinopora grandis from the Mississippian aged Burlington Formation limestone, but am not certain and would like other opinions. 2 of the "rays" are pretty weathered away and one is smaller than all of the others, but it looks apparent that it had 4 rays.

I checked some of the references I keep downloaded on my phone, but none of them have bryozoan illustrative plates. I traded away the only other specimen I've found like this long ago, and didn't take any pictures.

 

As found 

Dry

Wetted

 

Edited April 29 by Collector9658
Spelling and add image

[Tidgy's Dad]

Looks more echinodermy to me.

A crinoid, I think.

[Collector9658]

1 minute ago, Tidgy's Dad said:

Looks more echinodermy to me.

A crinoid, I think.

You can see the pores along the weathered "rays" if they are infact so rays of a bryozoan. Never seen a crinoid with these traits.

[Tidgy's Dad]

5 minutes ago, Collector9658 said:

You can see the pores along the weathered "rays" if they are infact so rays of a bryozoan. Never seen a crinoid with these traits.

Yes, I see holes in it.

But I think this is erosional / weathering.

Your "pores" don't look like bryozoan zooecia to me and the object looks too large and the arms are too broad for Evactinopora in my opinion.

[Collector9658]

42 minutes ago, Tidgy's Dad said:

Yes, I see holes in it.

But I think this is erosional / weathering.

Your "pores" don't look like bryozoan zooecia to me and the object looks too large and the arms are too broad for Evactinopora in my opinion.

I suppose we'll just have to agree to disagree here. What type of crinoid do you suppose it could be?

 

Regardless, Here is a nice website I just found with an Evactinopora grandis description while looking online for photos to compare.

https://www.lakeneosho.org/Evactinopora/grandis.html

https://www.lakeneosho.org/Miss44a.html

Edited April 29 by Collector9658

[Collector9658]

Any other opinions or suggestions on type of crinoid? Not trying to be hasty, but I'm struggling at finding a crinoid that compares well to this specimen. The cross shape is odd, and the holes or "pores" are even odder. That is what led me to call this an Evactinopora. What is exposed of the specimen measures 2.9 inches in length.

I checked many illustrative plates today in the The North American Crinoidea Camerata and I came up fruitless.

[westcoast]

Looks bryozoan to me, any chance of better focussed closer images of the pores?

[crinus]

I am leaning towards Evactinopora.  It is not all that rare in the Burlington Lm.

[Tidgy's Dad]

Oh, well, it wouldn't be the first time I've been wrong.

Hey ho.

[Collector9658]

4 hours ago, westcoast said:

Looks bryozoan to me, any chance of better focussed closer images of the pores?

This is the best I can get until I get home and get a chance to clean it up a little bit. It shows side views of two of the "rays".

[TqB]

One more for Evactinopora.