Sturgeon Heights Cottage Section (S2), Lot 9, Lake Simcoe area (Ordovician of Canada)

Where: Ontario, Canada (44.5° N, 78.7° W: paleocoordinates 25.1° S, 54.8° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Corynoides americanus - Orthograptus ruedemanni graptolite zone, Lower Member (Verulam Formation), Chatfieldian (460.9 - 449.5 Ma)

• M5 - M6

• member-level stratigraphic resolution

Environment/lithology: deep subtidal; gray, argillaceous limestone and green shale

• "170 feet of grey and brownish grey, fine- and medium-grained, argillaceous and sublithographic limestone; and higher in the formation, 8- to 10-inch beds of grey, medium-crystalline, crinoidal limestone alternating with 2- to 3-foot beds of greenish grey shale. Most of the strata weather to thin, 1- to 2-inch beds and to a buff and rusty colour. The lowermost 10 to 30 feet are non-resistant and consist of an alternation of grey and brownish grey, fine-grained, argillaceous limestone and thin, 1-inch greenish shale partings."

Size class: macrofossils

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 26271: authorized by Steven Holland, entered by Tori Hanson on 10.10.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Anthozoa
 Stauriida - Streptelasmatidae
Streptelasma sp. Hall 1847 horn coral
Scyphozoa
 Conulariida - Conulariidae
Trilobita
 Asaphida - Asaphidae
Isotelus cf. maximus Locke 1838 trilobite
Isotelus cf. iowensis Owen 1852 trilobite
Isotelus gigas Dekay 1824 trilobite
 Phacopida - Pterygometopidae
"Calliops callicephalus" = Calyptaulax callicephalus
"Calliops callicephalus" = Calyptaulax callicephalus Hall 1847 trilobite
 Phacopida - Cheiruridae
"Ceraurus dentatus" = Gabriceraurus dentatus Raymond and Barton 1913 trilobite
Ceraurus pleurexanthemus Green 1832 trilobite
 Phacopida - Calymenidae
"Flexicalymene senaria" = Flexicalymene (Flexicalymene) senaria
"Flexicalymene senaria" = Flexicalymene (Flexicalymene) senaria Conrad 1841 trilobite
 Corynexochida - Styginidae
 Proetida - Bathyuridae
"Raymondites cf. ingalli" = Bathyurus (Raymondites) ingalli
"Raymondites cf. ingalli" = Bathyurus (Raymondites) ingalli Raymond 1913 trilobite
Lingulata
 Lingulida - Trematidae
 Lingulida - Lingulidae
Lingula sp. BruguiƩre 1797
 Lingulida - Obolidae
"Lingula obtusa" = Lingulella obtusa, "Lingula cf. trentonensis" = Lingula (Palaeoglossa) trentonensis, "Lingula cf. friabilis" = Palaeoglossa friabilis, "Lingula cf. briseis" = Palaeoglossa briseis
"Lingula obtusa" = Lingulella obtusa Hall 1847
"Lingula cf. trentonensis" = Lingula (Palaeoglossa) trentonensis Conrad 1842
"Lingula cf. friabilis" = Palaeoglossa friabilis Sinclair 1945
"Lingula cf. briseis" = Palaeoglossa briseis Billings 1865
Craniata
 Trimerellida - Trimerellidae
Dinobolus sp. Hall 1871
 Craniopsida - Craniopsidae
"Pholidops trentonensis" = Craniops
"Pholidops trentonensis" = Craniops
Strophomenata
 Strophomenida - Sowerbyellidae
"Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea, "Sowerbyella cf. curdsvillensis" = Sowerbyella curdsvillensis, "Sowerbyella punctostriata" = Sowerbyella curdsvillensis, Sowerbyella subovalis
"Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea Sowerby 1839
"Sowerbyella cf. curdsvillensis" = Sowerbyella curdsvillensis Foerste 1912
"Sowerbyella punctostriata" = Sowerbyella curdsvillensis Foerste 1912
Sowerbyella subovalis Wilson 1932
 Strophomenida - Strophomenidae
Strophomena incurvata Shephard 1838
Strophomena billingsi Winchell and Schuchert 1893
 Strophomenida - Rafinesquinidae
Rafinesquina cf. esmondensis
Rafinesquina cf. esmondensis borealis
"Rafinesquina alata" = Rafinesquina alternata alata1 Wilson 1944
Rafinesquina alternata alata and Rafinesquina alternata intermedia and Rafinesquina alternata plana and Rafinesquina alternata pota and Rafinesquina alternata transversa
Rafinesquina gibbosa Wilson 1944
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
 Orthida - Dalmanellidae
Paucicrura rogata Sardeson 1892
 Orthida - Platystrophiidae
 Orthida - Plectorthidae
 Orthida - Plaesiomyidae
Dinorthis pectinella Emmons 1842
Dinorthis pectinella and Dinorthis pectinella sweeneyi
 Orthida - Hesperorthidae
 Orthida - Glyptorthidae
 Atrypida - Anazygidae
Zygospira deflecta, "Zygospira recurvirostris" = Anazyga recurvirostra
"Zygospira recurvirostris" = Anazyga recurvirostra Hall 1847
Stenolaemata
 Trepostomida - Monticuliporidae
 Cryptostomata - Ptilodictyidae
Stictoporella sp. Ulrich 1882
 Cryptostomata - Rhinidictyidae
 Cyclostomata - Corynotrypidae
Corynotrypa inflata Nicholson 1875
 Trepostomata - Halloporidae
Bivalvia
 Solemyida - Ctenodontidae
 Nuculida - Praenuculidae
"Ctenodonta albertina" = Praenucula albertina
"Ctenodonta albertina" = Praenucula albertina Ulrich 1894 clam
 Nuculida - Cardiolariidae
"Ctenodonta scofieldi" = Deceptrix scofieldi
"Ctenodonta scofieldi" = Deceptrix scofieldi Ulrich 1894 clam
 Myalinida - Ambonychiidae
 Cyrtodontida - Cyrtodontidae
 Modiomorphida - Modiomorphidae
Gastropoda
 Euomphalina - Platyceratidae
Cyclonema gracile Ulrich and Scofield 1897 snail
 Euomphalina - Holopeidae
Raphistomina lapicida Salter 1859 snail
"Holopea nereis" = Haplospira nereis Billings 1865 snail
Holopea paludiniformis Hall 1847 snail
 Bellerophontida - Temnodiscidae
"? Tropidodiscus cf. disculus" = Alaskadiscus disculus
"? Tropidodiscus cf. disculus" = Alaskadiscus disculus Billings 1860 snail
 Bellerophontida - Sinuitidae
"Sinuites cancellatus" = Sinuites cancellatus, "Sinuites corrugatus" = Sinuites cancellatus2
"Sinuites cancellatus" = Sinuites cancellatus Hall 1847 snail
Sinuites cancellatus and Sinuites cancellatus angularis
"Sinuites corrugatus" = Sinuites cancellatus2 Hall 1847 snail
Sinuites bilbobatus corrugatus
 Murchisoniina - Loxonematidae
Omospira alexandra, "Hormotoma trentonensis" = Omospira trentonensis
Omospira alexandra Billings 1865 snail
"Hormotoma trentonensis" = Omospira trentonensis Ulrich and Scofield 1897 snail
Hormotoma trentonensis crassa and Hormotoma trentonensis plana
 Murchisoniina - Hormotomidae
Hormotoma gracilis Hall 1847 snail
Hormotoma simplex Wilson 1932 snail
Hormotoma simplex and Hormotoma simplex paquettensis
 Murchisoniina - Murchisoniidae
"Hormotoma salteri" = Cyrtostropha salteri
"Hormotoma salteri" = Cyrtostropha salteri Ulrich and Scofield 1897 snail
Hormotoma salteri canadensis
 Murchisoniina - Subulitidae
"Hormotoma bellicincta" = Eroicaspira bellicincta
"Hormotoma bellicincta" = Eroicaspira bellicincta Hall 1847 snail
 Murchisoniina - Lophospiridae
Lophospira serrulata, "Lophospira perangulata" = Lophospira perangulata, "Lophospira perforata" = Lophospira perangulata, Lophospira ventricosa, "Lophospira saffordi" = Paupospira oweni
Lophospira serrulata Salter 1859 snail
"Lophospira perangulata" = Lophospira perangulata Hall 1847 snail
"Lophospira perforata" = Lophospira perangulata Hall 1847 snail
Lophospira ventricosa Hall 1847 snail
"Lophospira saffordi" = Paupospira oweni Ulrich and Scofield 1897 snail
 Murchisoniina - Trochonematidae
"Trochonema umbilicatum" = Trochonema umbilicata
"Trochonema umbilicatum" = Trochonema umbilicata Hall 1847 snail
Trochonema umbilicatum and Trochonema umbilicatum canadense
 Murchisoniina - Eotomariidae
Liospira cf. micula Hall and Whitney 1862 snail
Liospira progne Billings 1860 snail
Liospira americana Billings 1860 snail
Eotomaria sp. Ulrich and Scofield 1897 snail