GSC C-4459, Ekwan River (Silurian of Canada)

Also known as Reef 3667

Where: Ontario, Canada (53.4° N, 82.9° W: paleocoordinates 14.6° S, 44.5° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Attawapiskat Formation, Telychian (438.5 - 433.4 Ma)

• bed-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; lithified limestone

• bioherm core

Size class: macrofossils

Reposited in the GSC

Primary reference: J. Jin, W. G. E. Caldwell, and B. S. Norford. 1993. Early Silurian brachiopods and biostratigraphy of the Hudson Bay Lowlands, Manitoba, Ontario and Quebec. Bulletin Geological Survey of Canada 457:1-221 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 77335: authorized by Wolfgang Kiessling, entered by Uta Merkel on 09.01.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

 Corynexochida - Styginidae
Opoa sp. Lane 1972 trilobite
 Proetida - Proetidae
Winiskia perryi trilobite
Cyphoproetus sp. Kegel 1927 trilobite
 Phacopida - Cheiruridae
Chiozoon umisk trilobite
 Athyridida - Meristidae
Merista rhombiformis Jin et al. 1993
 Athyridida - Meristellidae
Whitfieldella sulcatina n. sp. Jin et al. 1993
Whitfieldella pygmaea Jin et al. 1993
 Orthida - Dalmanellidae
Isorthis (Arcualla) sp. Walmsley and Boucot 1975
 Rhynchonellida - Rhynchotrematidae
 Pentamerida - Gypidulidae
 Pentamerida - Pentameridae
 Pentamerida - Clorindidae
Clorinda rotunda Lindström 1861
 Atrypida - Lissatrypidae
Lissatrypa variabilis, "Meifodia discoidalis" = Cerasina discoidalis
"Meifodia discoidalis" = Cerasina discoidalis Jin et al. 1993
 Spiriferida - Reticulariidae
Alaskospira fabiformis Jin et al. 1993
 Spiriferida - Delthyrididae
Howellella porcata Jin et al. 1993
Howellella elegans Muir-Wood 1925