Left to right, Gomphosphenia stoermeri in Thomas et al. 2009, Gomphonema tackei var. brevistriata from holotype population, Gomphonema tackei Holotype BRM H73600-1a, Hustedt Diatom Study Centre, Alfred Wegener Institute
Credit
Thomas et al. 2009; Gina LaLiberte; Friedel Hinz, Hustedt Diatom Study Centre, Alfred Wegener Institute http://apps3.awi.de/Hustedt-Diatoms/H73501-73750/original/H73600-1a.jpg