AN8b (Silurian to of Canada)

Where: Quebec, Canada (49.5° N, 63.1° W: paleocoordinates 22.2° S, 34.1° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Richardson and Cybèle Member (Jupiter Formation), Aeronian to Aeronian (440.8 - 433.4 Ma)

Environment/lithology: open shallow subtidal; lithified, gray limestone and lithified, calcareous mudstone

• broad belt of shale-dominated strata that extends across Anticosti Island parallel with the south coast

Size classes: macrofossils, mesofossils

Reposited in the GSC

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

Purpose of describing collection: taxonomic analysis

PaleoDB collection 184409: authorized by Melanie Hopkins, entered by Melanie Hopkins on 23.02.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

 Corynexochida - Illaenidae
Stenopareia grandis Billings 1859 trilobite
 Odontopleurida - Odontopleuridae
Exallaspis sp. Ramsköld and Chatterton 1991 trilobite
 Phacopida - Phacopidae
Acernaspis orestes Billings 1860 trilobite
 Phacopida - Dalmanitidae
Bessazoon sp. Curtis and Lane 1998 trilobite
 Phacopida - Encrinuridae
Encrinurus deomenos Tripp 1962 trilobite
 Phacopida - Cheiruridae
 Phacopida - Calymenidae
Diacalymene schucherti Twenhofel 1928 trilobite
 Proetida - Proetidae
Decoroproetus sp. Pribyl 1946 trilobite
 Lichida - Lichidae
Arctinurus anticostiensis Northrup 1939 trilobite