GSC 80613 and 80128, Severn River (Silurian of Canada)

Also known as Reef 3666

Where: Ontario, Canada (55.7° N, 88.1° W: paleocoordinates 11.2° S, 45.9° 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

• 7.5 m of 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 77332: authorized by Wolfgang Kiessling, entered by Uta Merkel on 09.01.2008, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Styginidae
? Goldillaenus sp. Schindewolf 1924 trilobite
 Phacopida - Encrinuridae
Encrinurus (Perryus) severnensis Gass and Mikulic 1982 trilobite
 Phacopida - Cheiruridae
? Cheirurus sp. Beyrich 1845 trilobite
  - Scutelluidae
Rhynchonellata
 Spiriferida - Delthyrididae
Howellella elegans Muir-Wood 1925
 Pentamerida - Clorindidae
 Atrypida - Atrypidae
 Atrypida - Lissatrypidae
Atrypopsis severnensis n. sp. Jin et al. 1993
Atrypoidea praelingulata n. sp. Jin et al. 1993
 Orthida - Hesperorthidae
Hesperorthis davidsoni deVerneuil 1848
Gastropoda
 Euomphalina - Euomphalidae
Euomphalopterus cf. valeria2 Billings 1865 snail
"Euomphalopterus tyrrelli n. sp." = Euomphalopterus limatoidea1 Kindle 1903 snail
Poleumita hudsonica n. sp.1 Parks 1913 snail
Euomphalus minor n. sp.2 Parks 1915 snail
Euomphalus rotundus n. sp.2 Parks 1915 snail
 Euomphalina - Anomphalidae
Pycnomphalus colemani n. sp.2 Parks 1915 snail
 Euomphalina - Platyceratidae
"Diaphorostoma perforatum" = Platyostoma perforatum2, "Gyronema dowlingii" = Cyclonema dowlingii2, "Strophostylus filicinctus" = Cyclonema filicinctus2
"Diaphorostoma perforatum" = Platyostoma perforatum2 Whiteaves 1904 snail
"Gyronema dowlingii" = Cyclonema dowlingii2 Whiteaves 1906 snail
"Strophostylus filicinctus" = Cyclonema filicinctus2 Whiteaves 1904 snail
 Euomphalina - Oriostomatidae
"Gyronema cf. speciosum" = Oriostoma speciosum2
"Gyronema cf. speciosum" = Oriostoma speciosum2 Whiteaves 1892 snail
 Bellerophontida - Bucaniidae
"Megalomphala robusta" = Bucania robusta2
"Megalomphala robusta" = Bucania robusta2 Whiteaves 1904 snail
 Murchisoniina - Eotomariidae
Liospira stevensoni n. sp.2 Parks 1915 snail
 Murchisoniina - Gosseletinidae
"Eotomaria cf. galtensis" = Spiroraphe galtensis2
"Eotomaria cf. galtensis" = Spiroraphe galtensis2 Billings 1865 snail
 Murchisoniina - Murchisoniidae
"Coelidium cf. macrospira" = Cyrtostropha macrospira2
"Coelidium cf. macrospira" = Cyrtostropha macrospira2 Hall 1852 snail
 Murchisoniina - Hormotomidae
"Coelidium cf. bivittata" = Ptychocaulus bivittata2
"Coelidium cf. bivittata" = Ptychocaulus bivittata2 Hall 1852 snail
 Murchisoniina - Loxonematidae
Loxonema magnum2 Whitfield 1878 snail
Conodonta
 Panderodontida - Panderodontidae
Panderodus sp. Ethington 1959 conodont
Panderodus unicostatus Branson and Mehl 1933 conodont
"Panderodus recurvatus" = Panderodus panderi Stauffer 1940 conodont
 Prioniodontida - Balognathidae
? Pterospathodus celloni Walliser 1964 conodont