A set of images of xenospheres are presented. These are anomalous coccospheres bearing coccoliths of two or more coccolithophore species. Unlike combination coccospheres, these are almost certainly the products of post mortem processes. Possible mechanisms of formation are discussed, and comparative examples of unambiguous agglutination by tintinnids and foraminifera, and in pellets, are illustrated. The need for caution in interpreting putative combination coccospheres is highlighted.