R265. high on south slope of Wetherlaw Linn, Pentland Hills (Silurian of the United Kingdom)

Where: Scotland, United Kingdom (55.8° N, 3.4° W: paleocoordinates 15.8° S, 20.8° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Cyrtograptus lapworthi graptolite zone, Lower Member (Wether Law Linn Formation), Telychian (438.5 - 433.4 Ma)

• Formerly in Monoclimas crenulata zone. This is the Grain Heads Siltstone member now.

• member-level stratigraphic resolution

Environment/lithology: marine; bioturbated, brown, yellow, silty mudstone

• Yellow-brown laminated and bioturbated silty mudstones, succeeded by brown sandy siltstones, and then well-laminated brown siltstones

Size class: macrofossils

Preservation: mold/impression

Reposited in the BMNH

Collection methods: surface (float),

Primary reference: C. H. Holland. 2000. Silurian cephalopods from the Pentland Hills. Scottish Journal of Geology 36(2):177-186 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 159987: authorized by Pete Wagner, entered by Pete Wagner on 13.08.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Discosorida - Phragmoceratidae
 Dissidocerida - Geisonoceratidae
Geisonoceras maclareni Murchison 1859
 Orthocerida - Kionoceratidae
Kionoceras virgatum de Sowerby and Murchison 1839