Part of crinoid crown?

[Lone Hunter]

Hello this is my first visit here, and no I didn't go on airport property but was on the border at a small tributary.  I have found a lot of crinoid stems on the past and this looked similar,  my best guess was part of crown.  Am I close?  I included couple pics of bivalves and an ammonite found in same place if that helps. 

[IsaacTheFossilMan]

Where did you find this fossil? And could we see a picture of it with scale attached? (a coin is not universal, I do not know your currency!) That being said, I cannot see the crinoid crown, but I am no expert.

[Lone Hunter]

I thought the penny was the scale? I described best I could where,  small creek west side of airport bordering the property.  Let me know if you need more. Thanks! 

[IsaacTheFossilMan]

Ah, coins and other stuff are not proper scale, and rulers, or some universal scale needs to be used. 

I saw that locational data, but where? I am assuming you are in America, so what part of what state? Cheers.

[Lone Hunter]

 North Texas, USA, is that better? Here's pic with ruler. Sorry for the confusion!

[JohnJ]

Typically, a county and state (in the US) is good enough for a location.  

 

Your first item is not nearly old enough to be crinoids because of the Cretaceous bivalves and ammonite.  It is most likely a group of serpulid worm tubes.

[IsaacTheFossilMan]

I thought of serpulid too, glad to have my ideas vindicated.

[Lone Hunter]

Thanks for help, I have a number of tubes but never saw calcified ones! Guess I was thrown off because they look jointed. I have found crinoid stems nearby, here's a pic.