The late Missourian Plattsburg Limestone in Wilson County, Kansas contains a well developed marine pisolite associated with a phylloid-algal mound complex. A striking feature shown by this pisolite is plastic deformation caused by compaction which preceded cementation. This deformation formed chains of pisoliths, connected by apophyses. at all angle to the bedding. Evidence suggests that the pisoliths resulted from several interrupted periods of accretion, and that various states of induration existed among and within the discrete bodies prior to lithification.