Where: Gotland, Sweden (57.8° N, 18.5° E: paleocoordinates 21.4° S, 3.0° W)

• coordinate estimated from map

When: unit b Member (Hogklint Beds Formation), Sheinwoodian (433.4 - 430.5 Ma)

• Since the reference level described by Laufeld (1974b) undulates, an auxiliary reference level was established by L. Jeppsson, which comprises a thin mud layer about 1.80 m below the former

Environment/lithology: marine; marl

Size classes: macrofossils, mesofossils

Collected by L. Jeppsson

Collection methods: chemical

• The rock slabs were dissolved using standard micropalaeontological methods for retrieving phosphatic microfossils. The unsoluble residue was washed through 1.0 and 0.063 mm screens, dried, and the scolecodonts recovered by electrostatic picking.

Primary reference: M. Eriksson. 1997. Lower Silurian polychaetaspid polychaetes from Gotland, Sweden. GFF Geologiska Föreningens i Stockholm Förhandlingar 119(3):213-230 [E. Vlachos/E. Vlachos]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 224111: authorized by Evangelos Vlachos, entered by Evangelos Vlachos on 18.01.2022

Creative Commons license: CC BY (attribution)