21
2
May
443
453
BROUGHTON, P. L., SIMPSON, F., WHITAKER, S. H. 1978. Late Cretaceous coprolites from western Canada. Palaeontology, 21, 2, 443–453.
Paul L. Broughton, Frank Simpson and Sidney H. Whitaker Abundant coprolites and possibly gut fills of holostean fishes are irregularly distributed throughout the kaolinitic clays and muds of the Whitemud Formation (late Cretaceous) of the Willows-Readlyn district, south-central Saskatchewan. The coprolites show a variety of internal and external structures including coiling, folding, and contraction marks of primary origin; secondary features, for example surface cracking, due to diagenetic replacement by siderite and pyrite, and subsequent alteration to iron oxides. The Palaeontological Association (Free Access)