Kirkfield Quarry, lots 31-32, off of highway 503, near Kirkfield, Lake Simcoe Ar: Chatfieldian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Cephalopoda - Endocerida - Endoceratidae
Endoceras cf. proteiforme Hall 1847
Gastropoda - Bellerophontida - Bucaniidae
Bucania halli Ulrich and Scofield 1897
Gastropoda - Bellerophontida - Sinuitidae
Sinuites cancellatus (Hall 1847)
Sinuites cancellatus and Sinuites cancellatus angularis
Gastropoda - Murchisoniina - Hormotomidae
Hormotoma gracilis (Hall 1847)
Bivalvia - Solemyida - Ctenodontidae
Ctenodonta cf. simulatrix Ulrich 1894
Bivalvia - Myalinida - Ambonychiidae
Ambonychia sp. Hall 1847
Ambonychia cf. orbicularis (Emmons 1842)
Clionychia undata (Emmons 1842)
Bivalvia - Cyrtodontida - Cyrtodontidae
Cyrtodonta subangulata
Lingulata - Lingulida - Trematidae
Trematis cf. ottawaensis
Lingulata - Lingulida - Pseudolingulidae
Lingula scutum Sinclair 1945
recombined as Pseudolingula scutum
Lingulata - Lingulida - Lingulidae
Lingula sp. Bruguiére 1797
Rhynchonellata - Rhynchonellida - Rhynchotrematidae
Rhynchotrema increbescens (Hall 1847)
Rhynchonellata - Atrypida - Anazygidae
Zygospira recurvirostris (Hall 1847)
recombined as Anazyga recurvirostra
Rhynchonellata - Orthida - Plaesiomyidae
Dinorthis pectinella Emmons 1842
Rhynchonellata - Orthida - Platystrophiidae
Platystrophia felis
Platystrophia preponderosa
Platystrophia uniplicata
Platystrophia uxoris
Platystrophia trentonensis McEwan 1919
Platystrophia cf. elegantula McEwan 1919
Platystrophia amoena McEwan 1919
Platystrophia amoena and Platystrophia amoena longicardinalis
Rhynchonellata - Orthida - Dalmanellidae
Paucicrura rogata (Sardeson 1892)
Strophomenata - Strophomenida - Strophomenidae
Opikina platys Wilson 1944
Strophomenata - Strophomenida - Rafinesquinidae
Rafinesquina carlottina
Rafinesquina trentonensis (Hall 1847)
Rafinesquina alternata (Conrad 1838)
Rafinesquina alternata intermedia and Rafinesquina alternata plana
    = Rafinesquina intermedia Wilson 1944
Wagner 2020
original and current combination Rafinesquina alternata intermedia
Strophomenata - Strophomenida - Sowerbyellidae
Sowerbyella sericea (Sowerby 1839)
recombined as Sowerbyella (Sowerbyella) sericea
Sowerbyella punctostriata (Mather 1917)
synonym of Sowerbyella curdsvillensis
Stenolaemata - Trepostomata - Aisenvergiidae
Eridotrypa aedilis Eichwald 1855
Stenolaemata - Trepostomata - Halloporidae
Hallopora multitabulata Ulrich 1886
Stenolaemata - Trepostomata - Trematoporidae
Batostoma sp. Ulrich 1882
Stenolaemata - Trepostomida - Monticuliporidae
Mesotrypa angularis
Mesotrypa angularis parvatrypa
Mesotrypa quebecensis
Mesotrypa whiteavesi
Homotrypa minnesotensis
Prasopora grandis
Prasopora insularis
Prasopora simulatrix
Prasopora simulatrix and Prasopora simulatrix orientalis
Trilobita - Lichida - Lichidae
Hemiarges paulianus (Clarke 1894)
Trilobita - Asaphida - Asaphidae
Isotelus gigas (Dekay 1824)
recombined as Asaphus gigas
Trilobita - Phacopida - Calymenidae
Flexicalymene senaria (Conrad 1841)
recombined as Flexicalymene (Flexicalymene) senaria
Trilobita - Phacopida - Cheiruridae
Ceraurus sp. Green 1832
Trilobita - Phacopida - Encrinuridae
Encrinurus trentonensis Walcott 1880
synonym of Erratencrinurus vigilans
Encrinurus cybeleformis
Scyphozoa
Climacoconus sp.
see common names

Geography
Country:Canada State/province:Ontario
Coordinates: 44.6° North, 79.0° West (view map)
Paleocoordinates:24.8° South, 54.9° West
Basis of coordinate:estimated from map
Geographic resolution:outcrop
Time
Period:Ordovician Epoch:Late/Upper Ordovician
10 m.y. bin:Ordovician 4-5
*Period:Middle Ordovician *Epoch:Caradocian
*Local age/stage:Trentonian
Key time interval:Chatfieldian Graptolite zone: Climacograptus americanus - Orthograptus ruedemanni
Age range of interval:453.70000 - 451.10000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Simcoe Formation:Verulam Member:Lower
Stratigraphic resolution:member
Stratigraphy comments: M5 - M6
Lithology and environment
Primary lithology:gray argillaceous "limestone"
Secondary lithology:green "shale"
Includes fossils?Y
Includes fossils?Y
Lithology description: "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."
Environment:deep subtidal indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:26267
Authorizer:S. Holland, P. Wagner Enterer:T. Hanson, P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-10-10 17:07:54 Last modified:2018-03-24 00:24:12
Access level:the public Released:2002-10-10 17:07:54
Creative Commons license:CC BY
Reference information

Primary reference:
7251. 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]

Secondary references:

65064 P. Wagner. 2020. Subspecies kluges: a pointless taxonomic database to create species opinions for subspecies that then will be over-ruled and allow subspecies occurrences to be recognized as the subspecies rather than the parent species. [P. Wagner/P. Wagner/P. Wagner]