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Cyclotella petenensis and Cyclotella cassandrae, two new fossil diatoms from Pleistocene sediments of Lake Petén-Itzá, Guatemala, Central America
- Source :
- Phytotaxa, Phytotaxa, 2018, 351 (4), pp.247-263. ⟨10.11646/phytotaxa.351.4.1⟩, Phytotaxa, Magnolia Press 2018, 351 (4), pp.247-263. ⟨10.11646/phytotaxa.351.4.1⟩
- Publication Year :
- 2018
- Publisher :
- HAL CCSD, 2018.
-
Abstract
- While analyzing the fossil diatom flora in one of the longest paleolimnological records (core PI-6) from Lake Petén-Itzá, lowland Guatemala, we encountered Aulacoseira Thwaites, Cyclotella (Kützing) 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.
- Subjects :
- 010506 paleontology
010504 meteorology & atmospheric sciences
Pleistocene
Algae
Lake Petén-Itzá
Plant Science
01 natural sciences
Paleontology
Genus
Discostella
Ecology, Evolution, Behavior and Systematics
0105 earth and related environmental sciences
biology
Diatom
biology.organism_classification
Guatemala
Diatom flora
Lake Peten-Itza
Taxon
ddc:540
Cyclotella
Institut für Chemie
[SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology
Subjects
Details
- Language :
- English
- ISSN :
- 11793155 and 11793163
- Database :
- OpenAIRE
- Journal :
- Phytotaxa, Phytotaxa, 2018, 351 (4), pp.247-263. ⟨10.11646/phytotaxa.351.4.1⟩, Phytotaxa, Magnolia Press 2018, 351 (4), pp.247-263. ⟨10.11646/phytotaxa.351.4.1⟩
- Accession number :
- edsair.doi.dedup.....3e94db050f2ef99b5efe511dcb13e8aa