Knockgardner Quarry (Silurian of the United Kingdom)

Where: Scotland, United Kingdom (55.3° N, 4.6° W: paleocoordinates 18.2° S, 18.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Knockgardner Formation, Wenlock (433.4 - 427.4 Ma)

Environment/lithology: shallow subtidal; lithified, gray, green sandstone and lithified siltstone

• Knockgardner: thinly-bedded gray-green sandstones, laminated shales and siltstones with occasional thick massive sandstones [Floyd and Williams 2003, Trans Roy Soc Edin 93: 383-392]

Size class: macrofossils

Preservation: mold/impression

Collected by Elizabeth Gray in ~1850-1920; reposited in the BMNH, OUM, SM

• Collections also in Hunterian Museum (Glasgow University), Birmingham University, Grant Institute of Geology (Edinburgh University), Institute of Geological Sciences (Edinburgh), Palaeontologisk Museum (Oslo), National Museum of Wales, Royal Scottish Museum

Primary reference: Y. Howells. 1982. Scottish Silurian trilobites. Monograph of the Palaeontographical Society 135(561):1-70 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 188540: authorized by Melanie Hopkins, entered by Melanie Hopkins on 06.09.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Phacopida - Pterygometopidae
Podowrinella straitonensis Lamont 1965 trilobite
 Phacopida - Encrinuridae
Encrinurus expansus Haswell 1865 trilobite
 Phacopida - Calymenidae
Calymene frontosa Lindström 1885 trilobite
 Proetida - Proetidae
Warburgella (Warburgella) capetos n. sp. Howells 1982 trilobite
 Lichida - Lichidae
"Hemiarges rolfei" = Richterarges rolfei
"Hemiarges rolfei" = Richterarges rolfei Lamont 1965 trilobite