The 'new' 'Formgenotypus' proposed by Krutzsch (in Beih. Z. Geol. 21-22: 115. Apr 1959) - Appendicisporites appendicifer (Thierg.) R. Potonié in Beih. Geol. Jahrb. 23: 57. Sep 1956 (Appendicisporites appendicifer (Thierg.) Krutzsch in Beih. Z. Geol. 21-22: 115. Apr 1959, isonym) - is nomenclaturally inadmissible.