AN72 (Silurian of Canada)

Where: Quebec, Canada (49.2° N, 61.7° W: paleocoordinates 21.6° S, 34.5° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Ozarkodina clavula conodont zone, Sandtop Member (Gun River Formation), Aeronian (440.8 - 438.5 Ma)

• member-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified lime mudstone and lithified shale

• Authors do not specify which lithology fossils sampled from
• Hard, slabby, well-bedded micritic limestone and minor shale

Size class: macrofossils

Reposited in the GSC

Collection methods: surface (in situ), mechanical,

Primary reference: B. D. E. Chatterton and R. Ludvigsen. 2004. Early Silurian trilobites of Anticosti Island, Qu├ębec, Canada. Palaeontographica Canadiana 22 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 186092: authorized by Melanie Hopkins, entered by Melanie Hopkins on 09.06.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Corynexochida - Styginidae
Failleana sp. Chatterton and Ludvigson 1976 trilobite
 Phacopida - Phacopidae
Acernaspis orestes Billings 1860 trilobite
 Phacopida - Encrinuridae
Encrinurus deomenos Tripp 1962 trilobite
 Phacopida - Calymenidae
Calymene nowlani Chatterton and Ludvigsen 2004 trilobite
 Proetida - Proetidae
"Proetidae" indet. Salter 1864 trilobite
 Lichida - Lichidae
Arctinurus sp. Castelnau 1843 trilobite