Kirkfield Quarry, lots 31-32, off of highway 503, near Kirkfield, Lake Simcoe Ar (Ordovician of Canada)

Where: Ontario, Canada (44.6° N, 79.0° W: paleocoordinates 24.8° S, 54.9° 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)

• 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 26267: authorized by Steven Holland, entered by Tori Hanson on 10.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Phacopida - Encrinuridae
"Encrinurus trentonensis" = Erratencrinurus vigilans Hall 1847 trilobite
 Phacopida - Cheiruridae
Ceraurus sp. Green 1832 trilobite
 Phacopida - Calymenidae
Flexicalymene senaria Conrad 1841 trilobite
 Asaphida - Asaphidae
Isotelus gigas Dekay 1824 trilobite
 Lichida - Lichidae
Hemiarges paulianus Clarke 1894 trilobite
Strophomenata
 Strophomenida - Sowerbyellidae
"Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea, "Sowerbyella punctostriata" = Sowerbyella curdsvillensis
"Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea Sowerby 1839
"Sowerbyella punctostriata" = Sowerbyella curdsvillensis Foerste 1912
 Strophomenida - Rafinesquinidae
Rafinesquina alternata Conrad 1838
Rafinesquina alternata intermedia and Rafinesquina alternata plana
 Strophomenida - Strophomenidae
Opikina platys Wilson 1944
Rhynchonellata
 Atrypida - Anazygidae
"Zygospira recurvirostris" = Anazyga recurvirostra
"Zygospira recurvirostris" = Anazyga recurvirostra Hall 1847
 Rhynchonellida - Rhynchotrematidae
 Orthida - Dalmanellidae
Paucicrura rogata Sardeson 1897
 Orthida - Plaesiomyidae
 Orthida - Platystrophiidae
Lingulata
 Lingulida - Trematidae
 Lingulida - Lingulidae
Lingula sp. BruguiƩre 1797
Bivalvia
 Cyrtodontida - Cyrtodontidae
 Myalinida - Ambonychiidae
Clionychia undata Emmons 1842 clam
Ambonychia sp. Hall 1847 clam
Ambonychia cf. orbicularis Emmons 1842 clam
 Protobranchia - Ctenodontidae
Ctenodonta cf. simulatrix Ulrich 1894 clam
Gastropoda
 Bellerophontida - Sinuitidae
Sinuites cancellatus Hall 1847 snail
Sinuites cancellatus and Sinuites cancellatus angularis
 Bellerophontida - Bucaniidae
Bucania halli Ulrich and Scofield 1897 snail
 Murchisoniina - Hormotomidae
Hormotoma gracilis Hall 1847 snail
Cephalopoda
 Endocerida - Endoceratidae
Stenolaemata
 Trepostomida -
Batostoma sp. Ulrich 1882
 Trepostomata - Halloporidae
 Trepostomata - Mesotrypidae
 Trepostomata - Monticuliporidae
Prasopora simulatrix
Prasopora simulatrix and Prasopora simulatrix orientalis
 Trepostomata - Trematoporidae
Eridotrypa aedilis Eichwald 1855
Scyphozoa
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