AN73 (Silurian of Canada)

Where: Quebec, Canada (49.2° N, 62.5° W: paleocoordinates 21.4° S, 35.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• PJW: Was Gun River or basal Jupiter; in 2004 basal Jupiter was Goeland member, which is now in Meniér formation. These beds should span the Ozarkodina clavula conodont zone.

• group of beds-level stratigraphic resolution

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

• Gun River: hard, slabby, well-bedded micritic limestone and minor shale; flat pebble conglomerates in upper part. Jupiter: soft shales and limestone interbeds. Does not specify which lithology fossils sampled from

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, Québec, Canada. Palaeontographica Canadiana 22 [M. Hopkins/M. Hopkins]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 187764: authorized by Melanie Hopkins, entered by Melanie Hopkins on 11.08.2017

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Phacopida - Phacopidae
Acernaspis orestes Billings 1860 trilobite
 Phacopida - Encrinuridae
Encrinurus deomenos Tripp 1962 trilobite
 Phacopida - Cheiruridae
? Hadromeros sp. Lane 1971 trilobite
 Phacopida - Calymenidae
Diacalymene sp. Kegel 1927 trilobite
Calymene nowlani Chatterton and Ludvigsen 2004 trilobite
 Lichida - Lichidae
Arctinurus anticostiensis Northrup 1939 trilobite