Seymour Island, SI-409 (Cretaceous of Antarctica)

Where: Antarctica (64.3° S, 56.8° W: paleocoordinates 62.5° S, 67.5° W)

When: Lopez de Bertodano Formation, Maastrichtian (72.1 - 66.0 Ma)

Environment/lithology: offshore; sandstone

Collection methods: date sample taken 1982/1984

Primary reference: D. Harwood. 1988. Upper Cretaceous and lower Paleocene diatom and silicoflagellate biostratigraphy of Seymour Island, eastern Antarctic Peninsula. Geological Society of America, Memoir 169:55-129 [C. Cervato/C. Cervato]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 57558: authorized by Cinzia Cervato, entered by Cinzia Cervato on 13.12.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Chrysophyceae
 Phytomastigophora - Dictyochaceae
Bacillariophyceae
  - Aulacodiscaceae
? Aulacodiscus sp. A. Ehrenberg 1844 diatom
 Rhizosoleniales - Rhizosoleniaceae
Rhizosolenia sp. A. Brightwell 1858 diatom
  -
Trinacria heibergii diatom
Trinacria heibergii v. rostratum
 Coscinodiscales - Coscinodiscaceae
  -
 Centrales - Eupodiscaceae
  -
Pterotheca pokrovskajae diatom
Pterotheca pokrovskajae var.
 Melosirales - Endictyaceae
 Melosirales - Melosiraceae
 Melosirales - Stephanopyxidaceae
Stephanopyxis sp. A. Ehrenberg 1845 diatom
Stephanopyxis sp. B. Ehrenberg 1845 diatom
Stephanopyxis sp. C. Ehrenberg 1845 diatom
Stephanopyxis simonseni Hajos 1974 diatom
Stephanopyxis turris Greville and Arnot 1857 diatom
Stephanopyxis turris Greville and Arnot 1857 diatom
Stephanopyxis turris v. cylindrus
  -
Hemiaulus
  - Biddulphiaceae
Hemiaulus polymorphus Grunow 1884
Hemiaulus polymorphus v. frigida
Biddulphiaceae
  - Biddulphiaceae
Dinophyceae
 Gonyaulacales - Gonyaulacaceae