NC Yorktown formation mystery

[Frank Eaton]

I only try to post real mysteries and this is a specimen that is unlike anything I’ve found from Yorktown in that it is exceptionally dense. It has a fin shape and could almost be the dorsal process of a vertebrae except that the striated pattern across the face of it doesn’t look familiar to me as such. Feels like fish material? When it’s wet, the color is bright orange, almost like enamel. I don’t know, it’s just… weird. Thought I’d bring it before the court. Thanks!