Classification of the Late Paleozoic Family Medlicottiidae Karpinsky (Ammonoidea)

Abstract

This paper briefly discusses changes in phylogenetic reconstructions and in opinions on the system of the family Medlicottiidae Karpinsky. The most recent version of the classification, proposed in the revised Treatise … (Furnish et al., 2009) is critically reviewed. Based on revision of old and examination of new data, the classification accepted by the present author is substantiated; diagnoses of some genera (Paramedlicottia, Parasicanites, Miklukhoceras) and geochronological ranges of others (Neouddenites and Medlicottia) are emended. The phylogenetic reconstructions of some medlicottiid lineages in the subfamilies Medlicottiinae, Sicanitinae, and Episageceratinae are revised.