Cyclotella petenensis and Cyclotella cassandrae, two new fossil diatoms from Pleistocene sediments of Lake Peten-Itza, Guatemala, Central America
- 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.
| Author details: | Christine Pailles, Florence Sylvestre, Jaime Escobar, Alain Tonetto, Sybille Rustig, Jean-Charles Mazur |
|---|---|
| DOI: | https://doi.org/10.11646/phytotaxa.351.4.1 |
| ISSN: | 1179-3155 |
| ISSN: | 1179-3163 |
| Title of parent work (English): | Phytotaxa : a rapid international journal for accelerating the publication of botanical taxonomy |
| Publisher: | Magnolia Press |
| Place of publishing: | Auckland |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2018/06/07 |
| Publication year: | 2018 |
| Release date: | 2021/11/19 |
| Tag: | Cyclotella; Diatom; Guatemala; Lake Peten-Itza; Pleistocene |
| Volume: | 351 |
| Issue: | 4 |
| Number of pages: | 17 |
| First page: | 247 |
| Last Page: | 263 |
| Funding institution: | US National Science FoundationNational Science Foundation (NSF); International Continental Scientific Drilling Program; Swiss Federal Institute of Technology; Swiss National Science FoundationSwiss National Science Foundation (SNSF); Institute for Research and Development (IRD) |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
| Peer review: | Referiert |
| Publishing method: | Open Access / Green Open-Access |
