author = { Engeser, Theo AND Keupp, Helmut },

title = { Phylogeny of the aptychi‐possessing Neoammonoidea (Aptychophora nov., Cephalopoda) },

publisher = {Scandinavian University Press / Universitetsforlaget AS},

isbn = {0024-1164},

isbn = {1502-3931},

keywords = { Paleontology , Ecology, Evolution, Behavior and Systematics },

year = {2002},

url = { http://slubdd.de/katalog?TN_libero_mab2 }