Lake Simcoe Area, Lower Member, Submember C2 (Ordovician of Canada)

Where: Ontario, Canada (44.5° N, 78.6° W: paleocoordinates 25.1° S, 54.7° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Phragmodus undatus conodont zone, Coboconk Member (Bobcaygeon Formation), Turinian (457.3 - 453.8 Ma)

• Lower member, upper submember. This is now the Coboconk member

• member-level stratigraphic resolution

Environment/lithology: open shallow subtidal; gray limestone

• Lithology indiciative of shallowing conditions on the shelf of a Middle Ordovician sea.
• Thin beds of grey, finely clastic limestone (calcarenite).

Size classes: macrofossils, microfossils

Collection methods: chemical,

Primary reference: B. A. Liberty. 1969. Palaeozoic geology of the Lake Simcoe Area, Ontario. Geological Survey of Canada Memoirs (355)1-201 [S. Holland/T. Hanson/T. Hanson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 26191: authorized by Steven Holland, entered by Tori Hanson on 07.10.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhodophyceae
  - Solenoporaceae
Solenopora "compacta"
Solenopora "compacta" Dybowski 1877
Bivalvia
 Cyrtodontida - Cyrtodontidae
"Whitella sp." = Cyrtodontula
"Whitella sp." = Cyrtodontula Tomlin 1931 clam
Rhynchonellata
 Pentamerida - Camerellidae
Camerella panderi
 Pentamerida - Parastrophinidae
Parastrophina hemiplicata
 Rhynchonellida - Rhynchotrematidae
Rhynchotrema increbescens
 Atrypida - Anazygidae
"Zygospira recurvirostris" = Anazyga recurvirostra
"Zygospira recurvirostris" = Anazyga recurvirostra Hall 1847
 Orthida - Plaesiomyidae
Dinorthis cf. meedsi
Dinorthis cf. meedsi Winchell and Schuchert 1892
Dinorthis cf. meedsi germana
 Orthida - Hesperorthidae
Hesperorthis tricenaria
 Orthida - Dalmanellidae
Paucicrura rogata
Paucicrura rogata Sardeson 1892
Strophomenata
 Strophomenida - Strophomenidae
Strophomena sp., Strophomena cf. incurvata, Opikina sp.
Strophomena sp. Rafinesque and De Blainville 1824
Opikina sp. Salmon 1942
 Strophomenida - Rafinesquinidae
Rafinesquina sp., "Rafinesquina plana" = Rafinesquina alternata plana
Rafinesquina sp. Hall and Clarke 1892
"Rafinesquina plana" = Rafinesquina alternata plana Wilson 1944
Rafinesquina alternata plana
 Strophomenida - Sowerbyellidae
"Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea, Sowerbyella cf. curdsvillensis
"Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea Sowerby 1839
Stenolaemata
 Trepostomida -
Nicholsonella sp.
Nicholsonella sp. Ulrich 1890
 Trepostomida - Monticuliporidae
Prasopora grandis
 Cryptostomata - Escharoporidae
Escharopora suberecta
Trilobita
 Asaphida - Asaphidae
Isotelus cf. iowensis
Isotelus cf. iowensis Owen 1852 trilobite
 Phacopida - Cheiruridae
Ceraurus cf. pleurexanthemus
Ceraurus cf. pleurexanthemus Green 1832 trilobite
 Phacopida - Encrinuridae
Encrinurus sp.
Encrinurus sp. Emmrich 1844 trilobite
Ostracoda
 Leperditicopida - Leperditiidae
Leperditia sp.
Leperditia sp. Rouault 1851 ostracod
Anthozoa
 Stauriida - Lambelasmatidae
Lambeophyllum cf. profundum
Lambeophyllum cf. profundum Conrad 1843 horn coral
 Lichenariida - Lichenariidae
Lichenaria sp., Lichenaria coboconkensis
Lichenaria sp. Winchell and Schuchert 1895 tabulate coral
Lichenaria coboconkensis tabulate coral
Stromatoporoidea
 Labechiida - Stromatoceriidae
Stromatocerium cf. rugosum
Stromatocerium cf. rugosum Hall 1847 stromatoporoid sponge