@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{WeberScholzSchroederRitzrauetal.2018,
  author    = {Weber, Michael and Scholz, Denis and Schr{\"o}der-Ritzrau, Andrea and Deininger, Michael and Sp{\"o}tl, Christoph and Lugli, Federico and Mertz-Kraus, Regina and Jochum, Klaus Peter and Fohlmeister, Jens Bernd and Stumpf, Cintia F. and Riechelmann, Dana F. C.},
  title     = {Evidence of warm and humid interstadials in central Europe during early MISSUE 3 revealed by a multi-proxy speleothem record},
  series = {Quaternary science reviews : the international multidisciplinary research and review journal},
  volume    = {200},
  journal   = {Quaternary science reviews : the international multidisciplinary research and review journal},
  publisher = {Elsevier},
  address   = {Oxford},
  issn      = {0277-3791},
  doi       = {10.1016/j.quascirev.2018.09.045},
  pages     = {276 -- 286},
  year      = {2018},
  abstract  = {Marine Isotope Stage 3 (MIS 3, 57-27 ka) was characterised by numerous rapid climate oscillations (i.e., Dansgaard-Oeschger (D/O-) events), which are reflected in various climate archives. So far, MIS 3 speleothem records from central Europe have mainly been restricted to caves located beneath temperate Alpine glaciers or close to the Atlantic Ocean. Thus, MIS 3 seemed to be too cold and dry to enable speleothem growth north of the Alps in central Europe. Here we present a new speleothem record from Bunker Cave, Germany, which shows two distinct growth phases from 52.0 (+0.8, -0.5) to 50.9 (+0.6, -1.3) ka and 473 (+1.0, -0.6) to 42.8 (+/- 0.9) ka, rejecting this hypothesis. These two growth phases potentially correspond to the two warmest and most humid phases in central Europe during MIS 3, which is confirmed by pollen data from the nearby Eifel. The hiatus separating the two phases is associated with Heinrich stadial 5 (HS 5), although the growth stop precedes the onset of HS 5. The first growth phase is characterised by a fast growth rate, and Mg concentrations and Sr isotope data suggest high infiltration and the presence of soil cover above the cave. The second growth phase was characterised by drier, but still favourable conditions for speleothem growth. During this phase, the delta C-13 values show a significant decrease associated with D/O-event 12. The timing of this shift is in agreement with other MIS 3 speleothem data from Europe and Greenland ice core data. (C) 2018 Elsevier Ltd. All rights reserved.},
  language  = {en}
}