Kolmann, M.A. & Welch, K.C. & Summers, A.P. & Lovejoy, N.R. (2016)
Always chew your food: freshwater stingrays use mastication to process tough insect prey.
Proceedings of the Royal Society of London, Series B, 283(1838), Article 20161392 DOI: 10.1098/rspb.2016.1392