The simplest explanation was that the shark (or sharks) which left the marks had been intentionally trying to eat the feces. “From the curvature of the toothmarks and their positions on the specimens,” Godfrey and Smith write, “we reason that the majority of the fecal masses were in the sharks’ mouths.”
Yup, David’s legendary ancient sharks ate poo.
~Southern Fried Scientist
Godfrey, S., & Smith, J. (2010). Shark-bitten vertebrate coprolites from the Miocene of Maryland Naturwissenschaften DOI: 10.1007/s00114-010-0659-x
*The preceding post has absolutely nothing to do with shark conservation.