Cedar Glen (S8), lot 11. 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: Climacograptus americanus - Orthograptus ruedemanni graptolite zone, Lower Member (Verulam Formation), Chatfieldian (460.9 - 449.5 Ma)

• 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 26269: authorized by Steven Holland, entered by Tori Hanson on 10.10.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Corynexochida - Illaenidae
 Phacopida - Calymenidae
Flexicalymene senaria Conrad 1841 trilobite
 Asaphida - Asaphidae
Isotelus sp. Dekay 1824 trilobite
Strophomenata
 Strophomenida - Sowerbyellidae
"Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea Sowerby 1839
 Strophomenida - Rafinesquinidae
Rafinesquina alternata Conrad 1838
Rafinesquina alternata intermedia and Rafinesquina alternata plana and Rafinesquina alternata transversa
 Strophomenida - Strophomenidae
Strophomena sp. Rafinesque and De Blainville 1824
Opikina platys Wilson 1944
Rhynchonellata
 Pentamerida - Parastrophinidae
 Atrypida - Anazygidae
"Zygospira recurvirostris" = Anazyga recurvirostra, Zygospira deflecta
"Zygospira recurvirostris" = Anazyga recurvirostra Hall 1847
Zygospira deflecta Hall 1847
 Rhynchonellida - Rhynchotrematidae
 Orthida - Dalmanellidae
Paucicrura rogata Sardeson 1897
 Orthida - Plaesiomyidae
Dinorthis cf. pervetus
Dinorthis cf. pervetus ottawanus
Dinorthis pectinella Emmons 1842
Dinorthis pectinella and Dinorthis cf. pectinella sweeneyi
 Orthida - Platystrophiidae
Platystrophia amoena McEwan 1919
Platystrophia amoena longicardinalis
 Orthida - Plectorthidae
Brachiopoda
 Inarticulata -
Lingulata
 Lingulida - Trematidae
 Lingulida - Pseudolingulidae
 Lingulida - Obolidae
"Lingula trentonensis" = Lingula (Palaeoglossa) trentonensis
"Lingula trentonensis" = Lingula (Palaeoglossa) trentonensis Conrad 1842
 Lingulida - Lingulidae
Lingula sp. BruguiƩre 1797
Gastropoda
 Euomphalina - Holopeidae
Raphistomina rugata Ulrich and Scofield 1897 snail
Raphistomina lapicida Salter 1859 snail
 Bellerophontida - Sinuitidae
"Sinuites cancellatus" = Sinuites cancellatus, "Sinuites corrugatus" = Sinuites cancellatus
"Sinuites cancellatus" = Sinuites cancellatus Hall 1847 snail
Sinuites cancellatus and Sinuites cancellatus angularis
"Sinuites corrugatus" = Sinuites cancellatus Hall 1847 snail
Sinuites bilobatus and Sinuites bilobatus corrugatus
 Bellerophontida - Bucaniidae
"Salpingostoma cf. expansum" = Salpingostoma expansa
"Salpingostoma cf. expansum" = Salpingostoma expansa Hall 1847 snail
 Murchisoniina - Eotomariidae
Liospira cf. progne Billings 1860 snail
Liospira micula Hall and Whitney 1862 snail
Stenolaemata
 Trepostomida -
 Trepostomata - Halloporidae
 Trepostomata - Monticuliporidae
 Trepostomata - Trematoporidae
Eridotrypa aedilis Eichwald 1855
Graptolithina
 Diplograptoidea - Diplograptidae
"Diplograptus cf. amplexicaulis" = Rectograptus amplexicaulis
"Diplograptus cf. amplexicaulis" = Rectograptus amplexicaulis Hall 1847 diplograptoid
Diplograptus cf. amplexicaulis pertenuis
Anthozoa
 Stauriida - Streptelasmatidae
Streptelasma corniculum Hall 1847 horn coral