PBDB Collection

Lake Simcoe Area, Lower Member, Submember C1B (Ordovician of Canada)

Where: Ontario, Canada (44.7° N, 78.8° W: paleocoordinates 24.9° S, 54.8° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Climacograptus bicornis graptolite zone, Coboconk Member (Bobcaygeon Formation), Turinian (457.3 - 453.8 Ma)

• Lower submember, upper faunal zone. 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.

• Gray and brownish gray fine- and medium-grained limestone, and some gray crystalline crinoidal limestone.

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 26188: authorized by Steven Holland, entered by Tori Hanson on 07.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

Rhodophyceae
- Solenoporaceae	Solenopora "compacta" Solenopora "compacta" Dybowski 1877
Tetradium
-	Tetradium cellulosum Tetradium cellulosum
Chlorophyceae
- Receptaculitidae	Receptaculites occidentalis Receptaculites occidentalis
Anthozoa
Lichenariida - Lichenariidae	Lichenaria cf. sp., Lichenaria coboconkensis Lichenaria cf. sp. Winchell and Schuchert 1895 tabulate coral Lichenaria coboconkensis tabulate coral
Sarcinulida - Billingsariidae	Foerstephyllum halli Foerstephyllum halli tabulate coral
Sarcinulida - Syringophyllidae	"Calapoecia canadensis" = Calapoecia coxi "Calapoecia canadensis" = Calapoecia coxi Bassler 1950 tabulate coral
Stauriida - Lambelasmatidae	Lambeophyllum profundum Lambeophyllum profundum Conrad 1843 horn coral
Stromatoporoidea
Labechiida - Stromatoceriidae	Stromatocerium rugosum Stromatocerium rugosum Hall 1847 stromatoporoid sponge
Crinoidea
Monobathrida - Glyptocrinidae	Glyptocrinus sp. Glyptocrinus sp. Hall 1847 Sea lily
Dendrocrinida - Dendrocrinidae	Ottawacrinus typus Ottawacrinus typus Sea lily
Cephalopoda
Actinocerida - Actinoceratidae	Actinoceras bigsbyi Actinoceras bigsbyi
Gastropoda
Murchisoniina - Hormotomidae	Hormotoma gracilis Hormotoma gracilis Hall 1847 snail
Murchisoniina - Eotomariidae	Liospira sp. Liospira sp. Ulrich and Scofield 1897 snail
Murchisoniina - Lophospiridae	Lophospira sp. Lophospira sp. Whitfield 1886 snail
Murchisoniina - Trochonematidae	"Trochonema cf. umbilicatum" = Trochonema umbilicata "Trochonema cf. umbilicatum" = Trochonema umbilicata Hall 1847 snail
Euomphalina - Helicotomidae	Helicotoma planulata Helicotoma planulata Salter 1859 snail
Euomphalina - Macluritidae	"Maclurites logani" = Maclurina logani "Maclurites logani" = Maclurina logani Salter 1852 snail
Bivalvia
Solemyida - Ctenodontidae	Ctenodonta sp., Ctenodonta cf. logani Ctenodonta sp. Salter 1852 clam Ctenodonta cf. logani Salter 1859 clam
Strophomenata
Strophomenida - Rafinesquinidae	Rafinesquina trentonensis Rafinesquina trentonensis Hall 1847
Strophomenida - Furcitellidae	"Opikina minnesotensis" = Oepikina minnesotensis "Opikina minnesotensis" = Oepikina minnesotensis Winchell 1881
Strophomenida - Strophomenidae	Opikina clara, Strophomena incurvata Opikina clara Okulitch 1935 Strophomena incurvata Shephard 1838
Rhynchonellata
Atrypida - Anazygidae	"Zygospira recurvirostris" = Anazyga recurvirostra "Zygospira recurvirostris" = Anazyga recurvirostra Hall 1847
Orthida - Hesperorthidae	Hesperorthis tricenaria Hesperorthis tricenaria Conrad 1843
Rhynchonellida - Rhynchotrematidae	Rhynchotrema increbescens Rhynchotrema increbescens Hall 1847
Stenolaemata
Trepostomida -	Nicholsonella sp. Nicholsonella sp. Ulrich 1890
Cryptostomata - Escharoporidae	Graptodictya proava Graptodictya proava Eichwald 1860
Trepostomata - Halloporidae	Hallopora multitabulata Hallopora multitabulata Ulrich 1886
Ostracoda
Leperditicopida - Leperditiidae	Eoleperditia fabulites Eoleperditia fabulites ostracod
Trilobita
Proetida - Bathyuridae	Bathyurus sp. Bathyurus sp. Billings 1859 trilobite
Phacopida - Cheiruridae	"Ceraurus dentatus" = Gabriceraurus dentatus, Ceraurus pleurexanthemus "Ceraurus dentatus" = Gabriceraurus dentatus Raymond and Barton 1913 trilobite Ceraurus pleurexanthemus Green 1832 trilobite
Asaphida - Asaphidae	Isotelus gigas Isotelus gigas Dekay 1824 trilobite