In this paper we describe the mapping of Zaliznjak’s (1977) morphological classes into the lexical representation language DATR (Evans and Gazdar 1996). On the basis of the resulting DATR theory a set of fully inflected forms together with their as-sociated morphosyntax can automatically be generated from the electronic version of Zaliznjak’s dictionary (Ilola and Mustajoki 1989). From this data we plan to develop a wide-coverage morphosyntactic lemma-tizer and tagger for Russian