Zion South (S7) section, lot 10, Lake Simcoe area (Ordovician of Canada)
Where: Ontario, Canada (44.4° N, 78.8° W: paleocoordinates 25.1° S, 54.9° W)
• coordinate estimated from map
• outcrop-level geographic resolution
When: Climacograptus americanus - Orthograptus ruedemanni graptolite zone, Lower Member (Verulam Formation), Chatfieldian (453.8 - 451.0 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 26273: authorized by Steven Holland, entered by Tori Hanson on 10.10.2002, edited by Pete Wagner
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Pterobranchia | |
|
Climacograptus sp. Hall 1865 climacograptid | |
| Lingulata | |
|
Lingula sp. Bruguiére 1797 | |
"Lingula narrawayi" = Lingulella narrawayi
"Lingula narrawayi" = Lingulella narrawayi Wilson 1946 | |
| Strophomenata | |
|
Vellamo cf. trentonensis Raymond 1921 | |
Sowerbyella subovalis, "Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea, "Sowerbyella cf. curdsvillensis" = Sowerbyella curdsvillensis, "Sowerbyella punctostriata" = Sowerbyella curdsvillensis
Sowerbyella subovalis Wilson 1932
"Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea Sowerby 1839
"Sowerbyella cf. curdsvillensis" = Sowerbyella curdsvillensis Foerste 1912
"Sowerbyella punctostriata" = Sowerbyella curdsvillensis Foerste 1912 | |
Opikina auriculata, Opikina rugosa, Opikina platys, Strophomena delicatula, Strophomena cf. billingsi
Opikina platys Wilson 1944
Strophomena cf. billingsi Winchell and Schuchert 1893 | |
Rafinesquina calderi, Rafinesquina camerata, Rafinesquina esmondensis, Rafinesquina pota1, Rafinesquina quadrata1, Rafinesquina trentonensis, Rafinesquina deltoidea, "Rafinesquina platys" = Rafinesquina alternata platys1, "Rafinesquina intermedia" = Rafinesquina alternata intermedia1, "Rafinesquina alata" = Rafinesquina alternata alata1
Rafinesquina trentonensis Hall 1847
Rafinesquina deltoidea Conrad 1838
"Rafinesquina intermedia" = Rafinesquina alternata intermedia1 Wilson 1944 R. alternata intermedia and R. alternata alata and R. alternata plana and R. alternata platys and R. alternata pota and R. alternata quadrata
| |
| Rhynchonellata | |
"Zygospira recurvirostris" = Anazyga recurvirostra
"Zygospira recurvirostris" = Anazyga recurvirostra Hall 1847 | |
|
Rhynchotrema increbescens Hall 1847 | |
|
Paucicrura rogata Sardeson 1892 | |
|
Plectorthis sp. Hall and Clarke 1892 | |
| Stenolaemata | |
Mesotrypa quebecensis, Mesotrypa whiteavesi, Prasoporina selwyni, Prasoporina semioculata, Prasopora simulatrix, cf. Homotrypa minnesotensis
| |
|
Escharopora sp. Hall 1847
Escharopora cf. subrecta Ulrich 1886 | |
|
Hallopora cf. dumalis Ulrich 1893 | |
|
Batostoma winchelli Ulrich 1893 | |
|
Eridotrypa aedilis Eichwald 1855 | |
| Cephalopoda | |
|
Endoceras proteiforme Hall 1847 | |
|
"Orthoceras" sp. Breynius 1832 | |
| Gastropoda | |
|
Sinuites cancellatus Hall 1847 snail | |
"Salpingostoma expansum" = Salpingostoma expansa, "Bucania cf. punctifrons" = Undulabucania punctifrons
"Salpingostoma expansum" = Salpingostoma expansa Hall 1847 snail
"Bucania cf. punctifrons" = Undulabucania punctifrons Emmons 1842 snail | |
|
Hormotoma gracilis Hall 1847 snail
Hormotoma simplex Wilson 1932 snail | |
"Hormotoma salteri" = Cyrtostropha salteri
| |
"Trochonema umbilicatum" = Trochonema umbilicata, Trochonema fragile
"Trochonema umbilicatum" = Trochonema umbilicata Hall 1847 snail
Trochonema fragile Ulrich and Scofield 1897 snail | |
Lophospira serrulata, Lophospira ventricosa, "Lophospira perangulata" = Lophospira perangulata, "Lophospira perforata" = Lophospira perangulata
Lophospira serrulata Salter 1859 snail
Lophospira ventricosa Hall 1847 snail
"Lophospira perangulata" = Lophospira perangulata Hall 1847 snail
"Lophospira perforata" = Lophospira perangulata Hall 1847 snail | |
|
Omospira alexandra Billings 1865 snail | |
"Hormotoma bellicincta" = Eroicaspira bellicincta
"Hormotoma bellicincta" = Eroicaspira bellicincta Hall 1847 snail | |
|
Cyclonema cf. montrealense Billings 1865 snail | |
|
Helicotoma sp. Salter 1859 snail | |
| Bivalvia | |
|
Ctenodonta logani Salter 1859 clam
Ctenodonta nasuta Hall 1847 clam | |
|
Orthodesma cf. canaliculatum Ulrich 1894 clam | |
| Trilobita | |
"Illaenus americanus" = Thaleops laurentiana
"Illaenus americanus" = Thaleops laurentiana Amati and Westrop 2004 trilobite | |
"Raymondites ingalli" = Bathyurus (Raymondites) ingalli
"Raymondites ingalli" = Bathyurus (Raymondites) ingalli Raymond 1913 trilobite | |
"Flexicalymene senaria" = Flexicalymene (Flexicalymene) senaria
"Flexicalymene senaria" = Flexicalymene (Flexicalymene) senaria Conrad 1841 trilobite | |
cf. Achatella achates, Calyptaulax alatus, "Calliops callicephalus" = Calyptaulax callicephalus, "Calyptaulax calderi" = Sceptaspis lincolnensis
cf. Achatella achates Billings 1860 trilobite
Calyptaulax alatus trilobite
"Calliops callicephalus" = Calyptaulax callicephalus Hall 1847 trilobite
"Calyptaulax calderi" = Sceptaspis lincolnensis Branson 1909 trilobite | |
"Ceraurus dentatus" = Gabriceraurus dentatus, Ceraurus pleurexanthemus
"Ceraurus dentatus" = Gabriceraurus dentatus Raymond and Barton 1913 trilobite
Ceraurus pleurexanthemus Green 1832 trilobite | |
|
Isotelus cf. maximus Locke 1838 trilobite | |
|
Hemiarges cf. paulianus Clarke 1894 trilobite | |
| Scyphozoa | |
|
Conularia sp. jellyfish
Conularia trentonensis jellyfish | |