Mineral Wells Fossil Id

[Dantheman135]

I was at mineral wells fossil park for the first time recently and was sorting some the finds today. I found 3 fossils that I could use some help IDing. #1 I believe is a Crinoid calyx. #2 is a crinoid but it has a weird growth on the side of the it. #3 also appears to be a Crinoid but it is full of holes. There’s no apparent pattern to them and they are on all sides of it. All holes are roughly uniform in size in shape. I can post more photos of any of them. Thanks for any help.

[Dantheman135]

Back side of  #1

and a better look at the growth on #2

[DPS Ammonite]

32 minutes ago, Dantheman135 said:

I was at mineral wells fossil park for the first time recently and was sorting some the finds today. I found 3 fossils that I could use some help IDing. #1 I believe is a Crinoid calyx. #2 is a crinoid but it has a weird growth on the side of the it. #3 also appears to be a Crinoid but it is full of holes. There’s no apparent pattern to them and they are on all sides of it. All holes are roughly uniform in size in shape. I can post more photos of any of them. Thanks for any help.

They are borings on a crinoid stem by an unknown organism. See similar bored stem from Kansas Pennsylvanian rocks. Photo by Randomguy1.

 

http://www.thefossilforum.com/index.php?/topic/92969-byrozoan-of-some-sort/&tab=comments#comment-1024213

 

[Dantheman135]

Interesting. Thanks for the linking that thread.

[westcoast]

Nice specimens.These borings are generally assigned to the ichnogenera Tremichnus or Oichnus

[erose]

I’ve always been fascinated by these ichno fossils. There are actually quite a variety of borings and galls. Look for borings like these on crinoid cups.

 

[Dantheman135]

Another interesting thing is a spine sticking out of one of the holes.

[BobWill]

I don't think anyone confirmed your ID on the calyx but that is correct. There are quite a few genera on the fauna list for the Keechi Creek Shale so it would be hard say which one. I can't say I've seen a stem bore with something sticking out of it before. If you could get a close-up of that from different angles I would like to get some opinions on it.

[Dantheman135]

@BobWill here are some closeups

 

[BobWill]

Thanks for the new photos. Maybe someone will recognize it. There was someone who was studying crinoid parasites and asking for material to help. I will try to figure out who it was.