Paper 20 How to cite the paper: Foissner W., Berger H. (1999): Identification and ontogenesis of the nomen nudum hypotrichs (Protozoa: Ciliophora) Oxytricha nova (= Sterkiella nova sp. n.) and O. trifallax (= S. histriomuscorum). - Acta Protozoologica 38: 215-248. Note The PDF is protected by a password. Send an e-mail to password.paper@protozoology.com to get the username and the password for all papers. Start manual download of PDF (5211 kb) Links Send an e-mail to get the password for the PDF Homepage www.protozoology.com Publication list of Helmut Berger Publisher Helmut Berger Adobe to get the free Adobe Acrobat Reader Keywords: Ciliophora, Hypotrichia, Sterkiella, Oxytricha, nomenclature, Histrio, Histriculus, morphogenesis, cyst, biometry, Hypotrichida, Hypotricha, Spirotrichea, Spirotricha, Ciliates, Ciliata, cell division, Zellteilung, Protist, Top Dr Helmut BERGER Consulting Engineering Office for Ecology - Technisches Büro für Ökologie Radetzkystrasse 10, 5020 Salzburg, Austria, Europe Phone +43-(0)662-432538; Fax +43-(0)662-443139; email office@protozoology.com; http://www.protozoology.com