Trilobites of Wether Law Linn Formation units A-C, Pentland Hills (Silurian of the United Kingdom)

Where: Scotland, United Kingdom (56.0° N, 3.0° W: paleocoordinates 15.6° S, 20.6° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

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

• Was Monoclimacis crenulata zone. Units A-C span lower two members.

• formation-level stratigraphic resolution

Environment/lithology: marine; bioturbated siltstone and bioturbated sandstone

• From Tipper (1975) (ref. 6694): Unit A: non-micaceous siltstones, rarely stratified. Unit C: Structureless siltstones with bioturbation, with mottling and stratification becoming more prevalent higher up, then grading into sandstones, with an apparent increase in biogenic reworking, and evidence of soupy sediments (based on burrows).

Size class: macrofossils

Primary reference: E. N. K. Clarkson and Y. Howells. 1981. Upper Llandovery Trilobites from the Pentland Hills, Scotland. Palaeontology 24(3):507-536 [M. Foote/M. Foote/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 23308: authorized by Michael Foote, entered by Michael Foote on 11.07.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Trilobites only
Show authors, comments, and common names
Trilobita
 Proetida - Proetidae
"Proetus (Lacunoporaspis) sp." = Lacunoporaspis, Cyphoproetus comitilis n. sp., "Cyphoproetus depressus" = Cyphoproetus depressa
"Proetus (Lacunoporaspis) sp." = Lacunoporaspis Elkin 1966 trilobite
Cyphoproetus comitilis n. sp. trilobite
"Cyphoproetus depressus" = Cyphoproetus depressa Barrande 1846 trilobite
 Odontopleurida - Odontopleuridae
Anacaenaspis dealgach
Anacaenaspis dealgach Lamont 1948 trilobite
 Harpetida - Harpetidae
Scotoharpes domina
Scotoharpes domina Lamont 1948 trilobite
 Phacopida - Calymenidae
Calymene frontosa
Calymene frontosa Lindström 1885 trilobite
 Phacopida - Phacopidae
Acernaspis (Eskaspis) sufferta
Acernaspis (Eskaspis) sufferta Lamont 1947 trilobite
 Phacopida -
Cheirurina indet.
Cheirurina indet. Harrington and Leanza 1957 trilobite
 Phacopida - Cheiruridae
Youngia douglasi
 Phacopida - Encrinuridae
Encrinurus expansus
Encrinurus expansus Haswell 1865 trilobite