Stigmaria or Young Lycopsid?

[cameronsfossilcollection]

From my collection of St Clair plant material - any ideas? Less than half a centimeter thick, about two inches long.

[Rockwood]

Core (rachis) of a strobilus ?

[cameronsfossilcollection]

6 minutes ago, Rockwood said:

Core (rachis) of a strobilus ?

So possibly the reproductive structure of some plant? 

[Rockwood]

2 minutes ago, cameronsfossilcollection said:

So possibly the reproductive structure of some plant? 

I'm thinking probably. I'm not the expert to give the word though.

[cameronsfossilcollection]

Just now, Rockwood said:

I'm thinking probably. I'm not the expert to give the word though.

Food for thought, I’m not very knowledgeable when it comes to plants or plant anatomy. I appreciate the answer! 

[Strepsodus]

I agree with @Rockwood that it’s probably a strobilus axis.  I suspect it’s a Sigillariostrobus axis.  That’s what the ones in my collection are labelled as.  Not 100% sure though.

[Rockwood]

If the pattern reflects that of leaf cushions (big if) it would seem possible to find arguments for Lepidostrobus or Sigillariostrobus.

Should we consider Palaeostachya ?  

[Strepsodus]

12 minutes ago, Rockwood said:

If the pattern reflects that of leaf cushions (big if) it would seem possible to find arguments for Lepidostrobus or Sigillariostrobus.

Should we consider Palaeostachya ?  

I haven’t seen this structure on Palaeostachya, but I wouldn’t rule it out.