PAILLES, Christine, Florence SYLVESTRE, Jaime ESCOBAR, Alain TONETTO, Sybille RUSTIG & Jean-Charles MAZUR 2018 (June 7) Cyclotella petenensis and Cyclotella cassandrae, two new fossil diatoms from Pleistocene sediments of Lake Petén-Itzá, Guatemala, Central America Phytotaxa 351(4): 247-263, 39 figs., 1 table |