Eriksson, M.E. & Lindgren, J. & Chin, K. & Månsby, U. (2011)
Coprolite morphotypes from the Upper Cretaceous of Sweden: novel views on an ancient ecosystem and implications for coprolite taphonomy.
Lethaia, 44(4), 455–468 DOI: 10.1111/j.1502-3931.2010.00257.x