Alken #1, Nellen Koepfchen Beds, Germany (Devonian of Germany)

Where: Alken, Germany (50.3° N, 7.5° E: paleocoordinates 26.4° S, 5.2° E)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Early/Lower Emsian (409.1 - 402.5 Ma)

• plants present in different horizons.

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal; argillaceous shale

• fine-grained, dark

Size class: macrofossils

Preservation: mold/impression, adpression, original carbon

Collection methods: quarrying, chemical, mechanical,

Primary reference: R. Kraeusel and H. Weyland. 1962. Algen und Psilophyten aus dem Unterdevon von Alken an der Mosel. Senckenbergiana Lethaea 43(4):249-282 [P. Gensel/C. Bernard/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 26999: authorized by Pat Gensel, entered by Caroline Bernard on 11.11.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• also includes numerous arthropods: eurypterids, xiphosurids, aquatic scorpion, spider web. see Stormer 1970 to 1973.
Chlorophyceae
 Dasycladales -
Chaetocladus sp. Whitfield 1894
2 spp., nos. 1 & 2