I don't know what to make of this?

[Jeffrey P]

With the virus shutdown I've been going through my collection. I don't know what to make of this little piece just over an inch long. It appears to have spines at least on one side. I found it over a year ago in the Brownwood area of Texas from a site in the Upper Pennsylvanian Colony Creek Member of the Caddo Creek Formation. Any ideas would be appreciated. Thanks. If it isn't a fossil that's okay. I just would like to know what it is. 

[Rockwood]

I'm thinking that's a plant.

[Jeffrey P]

It was a marine site. Modern plant? 

[Rockwood]

57 minutes ago, Jeffrey P said:

It was a marine site. Modern plant? 

Doubt it. Plants have always floated. Or at least been buoyant enough to drift out to sea.

[erose]

Many of our Texas Pennsylvanian Period sites that are mostly marine will have the occasional plant fossil. This includes places like Jacksboro and the Finis Shale, Wilson Clay Pit and Mineral Wells FP. There were swamps and forests nearby and stuff was washed to sea.