GSC O-104480. Small stream immediately south of Sylvia Grinnell Lake (Ordovician of Canada)

Where: Nunvait, Canada (64.1° N, 69.4° W: paleocoordinates 10.4° S, 40.0° W)

When: Plectodina tenuis conodont zone, Frobisher Bay Formation, Chatfieldian (453.8 - 451.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: gray limestone

• Buff brown weathering, light grey calcilutite.

Size classes: macrofossils, mesofossils

Collected by A. D. McCracken in 1988; reposited in the GSC

Primary reference: T. E. Bolton. 2000. Ordovician megafauna, southern Baffin Island, Nunavat. Geological Survey of Canada Bulletin 557:39-158 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 192778: authorized by Pete Wagner, entered by Pete Wagner on 19.04.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Ostracoda
 Leperditicopida - Leperditiidae
Eoleperditia sp.
Eoleperditia sp. Swartz 1949 ostracod
Trilobita
 Phacopida - Encrinuridae
? Encrinuroides sp.
? Encrinuroides sp. Reed 1931 trilobite
 Phacopida - Cheiruridae
Cheiruridae indet.
Cheiruridae indet. Hawle and Corda 1847 trilobite
 Asaphida - Asaphidae
Isotelus sp.
Isotelus sp. Dekay 1824 trilobite
 Corynexochida - Illaenidae
"Nanillaenus punctatus" = Thaleops punctata, Illaenus lacertus
"Nanillaenus punctatus" = Thaleops punctata Raymond 1905 trilobite
Illaenus lacertus Whittington 1954 trilobite
Gastropoda
 Euomphalina - Macluritidae
Maclurites sp.
Maclurites sp. Le Sueur 1818 snail
Rhynchonellata
 Orthida - Hesperorthidae
Hesperorthis interplicata
Crinoidea
 Flexibilia - Cupulocrinidae
Cupulocrinus aff. minimus