Where: Gotland, Sweden (57.4° N, 18.8° E: paleocoordinates 16.4° S, 2.2° W)
• coordinate based on unpublished field data
• outcrop-level geographic resolution
When: Polygnathoides siluricus conodont zone, Millklint Member (När Formation), Ludfordian (425.6 - 423.0 Ma)
• Hemse Beds, unit d. The taxon characteristic for subz. 2 of the P. siluricus Zone found from -0.2 m - +3.8 m, P. siluricus itself (very rare) at +3.6 -.8 m.
•Sample collected at +1.16/1.22 m w/r to the reference level.
•Reference level (Fredholm 1988): The extensive rippled surface (Sundquist 1982c) which forms the floor in the southeastern part of the quarry.
• bed-level stratigraphic resolution
Environment/lithology: lithified limestone
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 184319: authorized by Emilia Jarochowska, entered by Emilia Jarochowska on 21.02.2017
Creative Commons license: CC BY (attribution)
Taxonomic list
Conodonta | |
Silurognathus maximus Jeppsson 2005 conodont |