Rob Holmes, a long time student of Bob Carroll's, received his PhD from McGill University in 1982. He serves as Research Associate at both the Redpath Museum and the Canadian Museum of Nature when he is not haranguing his ecological technology students (Vanier College, Montreal) from the other side of a beaver pond. Although he has spent some time pondering ceratopsians, he is also interested in mosasaurs, Palaeozoic tetrapods, and practically everything else except teleosts, which he is happy to leave to his wife, Alison Murray.