TY  - JOUR
A1  - Pailles, Christine
A1  - Sylvestre, Florence
A1  - Escobar, Jaime
A1  - Tonetto, Alain
A1  - Rustig, Sybille
A1  - Mazur, Jean-Charles
T1  - Cyclotella petenensis and Cyclotella cassandrae, two new fossil diatoms from Pleistocene sediments of Lake Peten-Itza, Guatemala, Central America
JF  - Phytotaxa : a rapid international journal for accelerating the publication of botanical taxonomy
N2  - While analyzing the fossil diatom flora in one of the longest paleolimnological records (core PI-6) from Lake Peten-Itza, lowland Guatemala, we encountered Aulacoseira Thwaites, Cyclotella (Kutzing) and Discostella (Cleve & Grunow) Houk & Klee species appearing successively in the record. Among them, two new species that are assigned to the genus Cyclotella are described herein. Cyclotella petenensis sp. nov. is characterised by a coarse striation marked by a shadow line and a tangentially undulate central area with an arc of central fultoportulae. Cyclotella cassandrae sp. nov. has an elliptically shaped valve, coarse striae and a scattered ring of central fultoportulae in the central area. Classification and differences to similar taxa in the genus Cyclotella are discussed.
KW  - Diatom
KW  - Cyclotella
KW  - Pleistocene
KW  - Lake Peten-Itza
KW  - Guatemala
Y1  - 2018
U6  - https://doi.org/10.11646/phytotaxa.351.4.1
SN  - 1179-3155
SN  - 1179-3163
VL  - 351
IS  - 4
SP  - 247
EP  - 263
PB  - Magnolia Press
CY  - Auckland
ER  -