Spine like trace fossil

[Lone Hunter]

Collected this in Woodbine formation, I've searched through trace fossils but haven't found a match assuming that's what it is, hope it's recognizable.

[DPS Ammonite]

Is there any stem like feature connecting these? Plants have been found in the Woodbine.

[BobWill]

Now, that's just weird! I have no idea. Maybe mash some modeling clay down into it and see what the negative looks like. Is that the typical sandstone you see a lot of in the Woodbine?

[Lone Hunter]

Don't see any connections but preservation isn't great. As far as typical,  this is a rather new spot,  that has several different colors and textures of sandstone. I've been looking for plants but so far just petrified wood.  I've included a few pics of site, every slab is solid shells of different oysters, some of the biggest I've seen along with strange things I don't recognize.. Above that is layer with concretions I found fat little ammonite in along with several other fossils and  trace fossils.

[Lone Hunter]

Upon closer inspection from diff angle it does appear there is some kind of connection at the 'head' of this. Including 2 pics of beginning and 2 showing end of the trail.

[Rockwood]

Has the cup in cup look of a catkin perhaps ?

[Lone Hunter]

Dang I think you nailed it!   Even looks like some of the pollen there in last pic . How cool my first Woodbine plant fossil!  Found first Woodbine  fish tooth here also, this is most productive  site I've hunted  in this formation. 

[westcoast]

Some of the latter images are reminiscent of some of the preservation styles of Protovirgularia

[Rockwood]

Agreed. Protovirgularia dichotoma, in particular.

Technical correction

Edited July 30, 2022 by Rockwood