GSC O-104492. 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 (460.9 - 449.5 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 192779: authorized by Pete Wagner, entered by Pete Wagner on 19.04.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Strophomenida - Rafinesquinidae
Rafinesquina sp. Hall and Clarke 1892
"Rafinesquina subnutans" = Rafinesquina declivis subnutans Roy 1941
? Rafinesquina declivis subnutans
 Strophomenida - Strophomenidae
Strophomena sp., "Strophomena fluctuosa" = Nasutimena fluctuosa
Strophomena sp. Rafinesque and De Blainville 1824
"Strophomena fluctuosa" = Nasutimena fluctuosa Billings 1860
Rhynchonellata
 Orthida - Plaesiomyidae
 Orthida - Plectorthidae
Trilobita
 Corynexochida - Illaenidae
"Nanillaenus punctatus" = Thaleops punctata
"Nanillaenus punctatus" = Thaleops punctata Raymond 1905 trilobite
 Phacopida - Encrinuridae
Encrinuridae indet. Angelin 1854 trilobite
 Phacopida - Cheiruridae
Cheiruridae indet. Hawle and Corda 1847 trilobite
Hapsiceraurus hispidus Whittington 1954 trilobite
 Phacopida - Calymenidae
Calymenidae indet. Milne-Edwards 1840 trilobite
 Phacopida - Pterygometopidae
Crinoidea
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