Where: Gotland, Sweden (57.2° N, 18.5° E)

• Paleocoordinates: 2.1° N, 43.9° W (Wright 2013)

• coordinate based on unpublished field data

• outcrop-level geographic resolution

When: Polygnathoides siluricus conodont zone, När Formation (Hemse Group), Ludfordian (425.0 - 422.7 Ma)

• Hemse Beds, Hemse Marl, southeastern part. P. siluricus Zone, subz. 3.

• formation-level stratigraphic resolution

Environment/lithology: lithified marl

Size class: microfossils

Preservation: original phosphate

Collection methods: acetic, sieve

Primary reference: L. Jeppsson. 2005. Conodont-based revisions of the Late Ludfordian on Gotland, Sweden. Gff 127(4):273-282 [E. Jarochowska/E. Jarochowska]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 184331: authorized by Emilia Jarochowska, entered by Emilia Jarochowska on 21.02.2017

Creative Commons license: CC0 (CC0)