[WKUHilltopper]

Is this the dreaded Lorena Bobbit worm...that chops off your whacker?

http://www.nydailynews.com/news/crime/20-years-today-lorena-bobbitt-cuts-husband-penis-case-horrified-fascinated-nation-article-1.1379112

[heartwood]

At the bottom of the Earth Touch News page, this link:

Scientists have compiled a 'dentist's handbook' of prehistoric penis worm teeth