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.