Anticosti Island, Cap Ottawa, Jupiter Formation Member 4 (Silurian of Canada)

Where: Québec, Canada (49.5° N, 63.6° W: paleocoordinates 22.4° S, 34.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Cybele Member (Jupiter Formation), Telychian (438.5 - 433.4 Ma)

• This was Member 4 (now Cybele)

• member-level stratigraphic resolution

Environment/lithology: gray lime mudstone and burrowed shale

• Environmental call by T. Hanson.
• "[T]hin- to locally medium-, tabular, subnodular to lensy-bedded, grey- to brown-grey, lime mudstone to rare skeletal wackestone and packstone that weather grey-yellow to buff; partings and beds of shale up to 5 cm thick and commonly burrowed are interbeddd with the limestone."

Size class: macrofossils

Collection methods: Nautiloids, trilobites, and pentamerid and stricklandid brachiopods are locally abundant.

Primary reference: C. R. Barnes, A. A. Petryk, and T. E. Bolton. 1981. Anticosti Island, Québec. In P. J. Lespérance (ed.), Field meeting, Anticosti-Gaspé, Québec, 1981: IUGS Subcommssion on Silurian Stratigraphy, Ordovician-Silurian Boundary Working Group Guidebook 1:1-24 [S. Holland/T. Hanson/S. Bruning]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 24423: authorized by Steven Holland, entered by Tori Hanson on 07.08.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Actinocerida - Huroniidae
Huroniella sp. Foerste 1924
 Oncocerida - Acleistoceratidae
 Oncocerida - Trimeroceratidae
 Discosorida - Discosoridae
Discosorus sp. Hall 1852
Gastropoda
 Bellerophontida - Bucaniidae
Salpingostoma orientalis Twenhofel 1928 snail
Rhynchonellata
 Spiriferida - Cyrtiidae
Eospirifer radiatus Sowerby 1834
 Atrypida - Atrypinidae
 Pentamerida - Stricklandiidae
"Stricklandia salteri" = Microcardinalia (Chiastodoca) salterii Billings 1868
Strophomenata
 Orthotetida - Triplesiidae
 Strophomenida - Leptostrophiidae
Brachyprion spp. Shaler 1865
Ostracoda
 Palaeocopida - Beyrichiidae
 Palaeocopida - Zygobolbidae
Trilobita
 Phacopida - Phacopidae
Acernaspis orestes Billings 1860 trilobite
 Phacopida - Dalmanitidae
Dalmanites jupiterensis Twenhofel 1928 trilobite
 Phacopida - Calymenidae
Diacalymene schucherti Twenhofel 1928 trilobite
 Phacopida - Encrinuridae
 Lichida - Lichidae
"Arctinurus anticostiensis" = Anadesma shallopensis
"Arctinurus anticostiensis" = Anadesma shallopensis Twenhofel 1928 trilobite
Crinoidea
 Sagenocrinida - Sagenocrinitidae
 Diplobathrida - Dimerocrinitidae
Dimerocrinites elegans Springer 1928 Sea lily
 Monobathrida - Eucalyptocrinitidae
Eucalyptocrinites sp. Goldfuss 1831 Sea lily
Rhombifera
 Hemicosmitoida - Caryocrinitidae
Pterobranchia
 Graptoloidea - Monograptidae