@article{PaillesSylvestreEscobaretal.2018,
  author    = {Pailles, Christine and Sylvestre, Florence and Escobar, Jaime and Tonetto, Alain and Rustig, Sybille and Mazur, Jean-Charles},
  title     = {Cyclotella petenensis and Cyclotella cassandrae, two new fossil diatoms from Pleistocene sediments of Lake Peten-Itza, Guatemala, Central America},
  series = {Phytotaxa : a rapid international journal for accelerating the publication of botanical taxonomy},
  volume    = {351},
  journal   = {Phytotaxa : a rapid international journal for accelerating the publication of botanical taxonomy},
  number    = {4},
  publisher = {Magnolia Press},
  address   = {Auckland},
  issn      = {1179-3155},
  doi       = {10.11646/phytotaxa.351.4.1},
  pages     = {247 -- 263},
  year      = {2018},
  abstract  = {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.},
  language  = {en}
}
@article{PerezBrignoli2009,
  author    = {P{\´e}rez Brignoli, Hector},
  title     = {Alexander von Humboldt en Centroam{\´e}rica y en el R{\´i}o de la Plata Repercusiones y conexiones},
  series = {Alexander von Humboldt im Netz ; international review for Humboldtian studies},
  volume    = {X},
  journal   = {Alexander von Humboldt im Netz ; international review for Humboldtian studies},
  number    = {19},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  issn      = {2568-3543},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-42883},
  pages     = {122 -- 125},
  year      = {2009},
  abstract  = {Exploraci{\´o}n sobre la influencia de las obras y el pensamiento de Alexander von Humboldt en los pa{\´i}ses de la Am{\´e}rica Central (Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica y Panam{\´a}) y el R{\´i}o de la Plata (Argentina, Paraguay y Uruguay).},
  language  = {es}
}