belemnite battlefield?

[LiamL]

Funny story with this one, these are from a hunt from about a year ago. I put my bag in the washer and when taking it out this fell out. 

Lucky it survived after a wash.

These are very small ones if they are belemnites.

[Rockwood]

Not exactly a battlefield.

Belemnites are thought to have undergone mass die offs at spawning. 

These could easily be echinoid spines though. 

[TqB]

If that's from the Yorkshire coast it's probably a Carboniferous erratic.

I've found a few like it and I think they're hexactinellid sponge root tuft spicules (search Hyalostelia although that's just one genus defined by its main body spicules - the name is loosely used as a form genus for the roots).  

Another possibility is productid brachiopod spines though you'd expect some shells as well.

 

90% for sponge root tuft.  - this area has the usual parallel structure before being broken up:

 

[LiamL]

37 minutes ago, TqB said:

If that's from the Yorkshire coast it's probably a Carboniferous erratic.

I've found a few like it and I think they're hexactinellid sponge root tuft spicules (search Hyalostelia although that's just one genus defined by its main body spicules - the name is loosely used as a form genus for the roots).  

Another possibility is productid brachiopod spines though you'd expect some shells as well.

 

90% for sponge root tuft.  - this area has the usual parallel structure before being broken up:

 

So not belemnites? 

I found this at either runswick bay or Mappleton, probably Mappleton.

[TqB]

Definitely not belemnites.  Both locations are good for Carb erratics.

 

Your second photo shows it's packed with Carboniferous crinoid fragments - two large bits here, at top and bottom:

[abyssunder]

Yup, nice sponge root tufts! Similar ones here: