PBDB

Type section at Little Bob quarry, south of Bobcaygeon, Lake Simcoe Area (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: Plectodina tenuis conodont zone, Kirkfield Member (Bobcaygeon Formation), Kirkfieldian (460.9 - 449.5 Ma)

• Was middle member, but this is now Kirkfield

• member-level stratigraphic resolution

Environment/lithology: deep subtidal; brown, gray limestone

• Deepening waters and quiet conditions of sedimentation.

• "20 feet of gray and brown, very fine grained to sublithographic, sparsely fossiliferous limestone, with some fine-grained limestone in the upper part. The strata weather into grey beds, 2 to 10 inches thick, which are generally more massive than those of the lower and upper members."

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 26192: 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

unclassified
-	Lindstromia whiteavesi Lindstromia whiteavesi
Florideophyceae
Corallinales - Corallinophycidae	Solenopora "compacta" Solenopora "compacta" Dybowski 1877
Tetradium
-	Tetradium cellulosum Tetradium cellulosum
Stromatoporoidea
Labechiida - Stromatoceriidae	Stromatocerium sp. Stromatocerium sp. Hall 1847 stromatoporoid sponge
Anthozoa
Stauriida - Lambelasmatidae	Lambeophyllum profundum Lambeophyllum profundum Conrad 1843 horn coral
Stauriida - Columnariidae	Columnaria magnifica Columnaria magnifica horn coral
Stauriida - Streptelasmatidae	Streptelasma corniculum Streptelasma corniculum Hall 1847 horn coral
Sarcinulida - Billingsariidae	Foerstephyllum halli Foerstephyllum halli tabulate coral
Sarcinulida - Syringophyllidae	"Calapoecia canadensis" = Calapoecia coxi "Calapoecia canadensis" = Calapoecia coxi Bassler 1950 tabulate coral
Lichenariida - Lichenariidae	Lichenaria typa Lichenaria typa Winchell and Schuchert 1895 tabulate coral
Stenolaemata
Trepostomida -	Nicholsonella sp., Nicholsonella laminata, Nicholsonella cf. ponderosa Nicholsonella sp. Ulrich 1890 Nicholsonella laminata Nicholsonella cf. ponderosa Ulrich 1890
Trepostomida - Monticuliporidae	Prasopora simulatrix Prasopora simulatrix Prasopora simulatrix orientalis
Cryptostomata - Rhinidictyidae	Rhinidictya mutabilis, Pachydictya acuta Rhinidictya mutabilis Ulrich 1882 Pachydictya acuta
Ostracoda
Leperditicopida - Leperditiidae	Eoleperditia fabulites, Leperditia sp. Eoleperditia fabulites ostracod Leperditia sp. Rouault 1851 ostracod
Trilobita
Asaphida - Asaphidae	Isotelus iowensis, Isotelus gigas, Isotelus cf. maximus Isotelus iowensis Owen 1852 trilobite Isotelus gigas Dekay 1824 trilobite Isotelus cf. maximus Locke 1838 trilobite
Phacopida - Cheiruridae	"Ceraurus dentatus" = Gabriceraurus dentatus, Ceraurus pleurexanthemus, "Ceraurus cf. bispinosus" = Bufoceraurus bispinosus "Ceraurus dentatus" = Gabriceraurus dentatus Raymond and Barton 1913 trilobite Ceraurus pleurexanthemus Green 1832 trilobite "Ceraurus cf. bispinosus" = Bufoceraurus bispinosus Raymond and Barton 1913 trilobite
Phacopida - Pterygometopidae	Achatella sp., cf. Achatella achates, "Calliops callicephalus" = Calyptaulax callicephalus Achatella sp. Delo 1935 trilobite cf. Achatella achates Billings 1860 trilobite "Calliops callicephalus" = Calyptaulax callicephalus Hall 1847 trilobite
Corynexochida - Illaenidae	Bumastus sp. Bumastus sp. Murchison 1839 trilobite
Proetida - Bathyuridae	Bathyurus cf. trispinosus, "Raymondites ingalli" = Bathyurus (Raymondites) ingalli, "Raymondites cf. spiniger" = Bathyurus (Raymondites) spiniger Bathyurus cf. trispinosus trilobite "Raymondites ingalli" = Bathyurus (Raymondites) ingalli Raymond 1913 trilobite Raymondites ingalli and Raymondites cf. ingalli "Raymondites cf. spiniger" = Bathyurus (Raymondites) spiniger Hall 1847 trilobite
Cephalopoda
Orthocerida - Orthoceratidae	"Orthoceras" sp. "Orthoceras" sp. Breynius 1832
Actinocerida - Gonioceratidae	Gonioceras sp. Gonioceras sp. Hall 1847
Pseudorthocerida - Spyroceratidae	"Spyroceras" bilineatum "Spyroceras" bilineatum Hall 1847
Gastropoda
Bellerophontida - Sinuitidae	Sinuites cancellatus Sinuites cancellatus Hall 1847 snail Sinuites cancellatus and Sinuites cf. cancellatus liratus
Bellerophontida - Bucaniidae	Phragmolites compressus, Bucania halli Phragmolites compressus Conrad 1838 snail Bucania halli Ulrich and Scofield 1897 snail
Bellerophontida - Pterothecidae	Pterotheca sp. Pterotheca sp. Salter 1853 snail
Pleurotomariida - Eotomariidae	"Eotomaria cf. larvata" = Paraliospira larvata "Eotomaria cf. larvata" = Paraliospira larvata Salter 1859 snail
Euomphalina - Platyceratidae	Cyclonema cf. cushingi Cyclonema cf. cushingi Ruedemann 1912 snail
Euomphalina - Macluritidae	"Maclurites logani" = Maclurina logani "Maclurites logani" = Maclurina logani Salter 1852 snail
Euomphalina - Lesueurillidae	"Eccyliomphalus cf. ottawaensis" = Eccyliopterus ottawaensis "Eccyliomphalus cf. ottawaensis" = Eccyliopterus ottawaensis Billings 1860 snail
Euomphalina - Helicotomidae	Helicotoma cf. planulata Helicotoma cf. planulata Salter 1859 snail
Murchisoniina - Murchisoniidae	"Hormotoma salteri" = Cyrtostropha salteri "Hormotoma salteri" = Cyrtostropha salteri Ulrich and Scofield 1897 snail Hormotoma salteri canadensis
Murchisoniina - Hormotomidae	Hormotoma gracilis, Hormotoma simplex Hormotoma gracilis Hall 1847 snail Hormotoma simplex Wilson 1932 snail Hormotoma simplex and Hormotoma simplex paquettensis
Murchisoniina - Straparollinidae	"Lophospira procris" = Straparollina procris, cf. Daidia cerithioides "Lophospira procris" = Straparollina procris Billings 1865 snail cf. Daidia cerithioides Salter 1859 snail
Murchisoniina - Loxonematidae	"Hormotoma trentonensis" = Omospira trentonensis "Hormotoma trentonensis" = Omospira trentonensis Ulrich and Scofield 1897 snail Hormotoma trentonensis and Hormotoma trentonensis crassa
Murchisoniina - Subulitidae	Subulites conradi, "Hormotoma bellicincta" = Eroicaspira bellicincta Subulites conradi Ulrich and Scofield 1897 snail "Hormotoma bellicincta" = Eroicaspira bellicincta Hall 1847 snail
Murchisoniina - Lophospiridae	Paupospira burginensis², Lophospira serrulata, Lophospira perangulata Paupospira burginensis² Ulrich and Scofield 1897 snail Lophospira serrulata Salter 1859 snail Lophospira perangulata Hall 1847 snail
Murchisoniina - Trochonematidae	"Trochonema umbilicatum" = Trochonema umbilicata "Trochonema umbilicatum" = Trochonema umbilicata Hall 1847 snail
Bivalvia
Protobranchia - Ctenodontidae	Ctenodonta gibberula, Ctenodonta nasuta Ctenodonta gibberula clam Ctenodonta nasuta Hall 1847 clam Ctenodonta nasuta robusta
Myalinida - Ambonychiidae	Ambonychia sp. Ambonychia sp. Hall 1847 clam
Cyrtodontida - Cyrtodontidae	"Whitella subtruncata" = Cyrtodontula "Whitella subtruncata" = Cyrtodontula clam
Strophomenata
Strophomenida - Rafinesquinidae	Rafinesquina sp., Rafinesquina cf. lennoxensis, "Rafinesquina alata" = Rafinesquina alternata alata¹ Rafinesquina sp. Hall and Clarke 1892 Rafinesquina cf. lennoxensis "Rafinesquina alata" = Rafinesquina alternata alata¹ Wilson 1944 Rafinesquina alternata alata and Rafinesquina alternata intermedia and Rafinesquina alternata plana and Rafinesquina alternata semiquadrata and Rafinesquina alternata transversa
Strophomenida - Strophomenidae	Opikina ampla, Opikina cf. ovalis, Opikina rugosa, Opikina septata, Opikina platys, ? Strophomena millionensis, Strophomena magna, Strophomena dignata, Strophomena planumbona, Strophomena incurvata Opikina ampla Opikina cf. ovalis Opikina rugosa Wilson 1921 Opikina rugosa and Opikina rugosa avita Opikina septata Salmon 1942 Opikina septata borealis Opikina platys Wilson 1944 ? Strophomena millionensis ?Strophomena millionensis affinis Strophomena magna Wilson 1945 Strophomena dignata Fenton 1928 Strophomena planumbona Hall 1847 Strophomena planumbona and Strophomena planumbona praecipita Strophomena incurvata Shephard 1838
Strophomenida - Sowerbyellidae	Sowerbyella cf. curdsvillensis, "Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea Sowerbyella cf. curdsvillensis Foerste 1912 "Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea Sowerby 1839
Rhynchonellata
Orthida - Dalmanellidae	Resserella resupinata, Paucicrura rogata Resserella resupinata Paucicrura rogata Sardeson 1892
Orthida - Hesperorthidae	Hesperorthis tricenaria Hesperorthis tricenaria Conrad 1843
Protorthida - Skenidiidae	? Skenidioides merope ? Skenidioides merope
Rhynchonellida - Ancistrorhynchidae	Drepanorhyncha cf. ottawaensis Drepanorhyncha cf. ottawaensis Billings 1862
Rhynchonellida - Rhynchotrematidae	Rhynchotrema increbescens Rhynchotrema increbescens Hall 1847
Atrypida - Anazygidae	"Zygospira recurvirostris" = Anazyga recurvirostra "Zygospira recurvirostris" = Anazyga recurvirostra Hall 1847
Pentamerida - Camerellidae	Camerella panderi, Camerella volborthi Camerella panderi Camerella volborthi Billings 1859
Lingulata
Lingulida - Obolidae	Ectenoglossa cf. philomela Ectenoglossa cf. philomela
Chlorophyceae
- Receptaculitidae	Receptaculites sp., Receptaculites occidentalis Receptaculites sp. Defrance 1827 Receptaculites occidentalis

¹Wagner 2020; ²Wagner 2022