7R001A (Pleistocene of the United States)

Where: Clear Lake County, California (38.9° N, 122.9° W: paleocoordinates 39.0° N, 122.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Kelseyville Formation, Rancholabrean (0.3 - 0.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; unlithified, fine-grained, diatomaceous, silty claystone

• Diatomaceous fine gray silty clay

Size class: microfossils

Primary reference: J. P. Bradbury. 1988. Diatom biostratigraphy and the paleolimnology of Clear Lake, Lake County, California. Geological Society of America Special Papers 214:97-130 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 184915: authorized by Pete Wagner, entered by Pete Wagner on 29.03.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Diatomophyceae
 Pennales - Achnanthaceae
Cocconeis placentula
 Pennales - Cymbellaceae
Amphora perpusilla
Bacillariophyceae
  -
Fragilaria pinnata, Fragilaria construens, Fragilaria brevistriata
Fragilaria construens diatom
includes Fragilaria construens venter
Melosira
  -
Melosira solida
Mediophyceae
 Stephanodiscales - Thalassiosirophycidae
Stephanodiscus "sp. nov.", Stephanodiscus asteroides, Stephanodiscus excentricus
Stephanodiscus asteroides
includes Stephanodiscus asteroides intermedius