Type section in Kirkfield Quarry, near Bobcaygeon, Lake Simcoe Area: Chatfieldian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Astroporites ottawaensis
"Othoceras" sp.
Chlorophyceae - Receptaculitidae
Receptaculites sp. Defrance 1827
Chlorophyceae - Dasycladales
Pasceolus globosus
Scyphozoa - Conulariida - Conulariidae
Conularia trentonensis
Anthozoa - Stauriida - Streptelasmatidae
Streptelasma corniculum Hall 1847
Anthozoa - Stauriida - Lambelasmatidae
Lambeophyllum profundum (Conrad 1843)
Cephalopoda - Endocerida - Endoceratidae
Endoceras proteiforme Hall 1847
Cephalopoda - Orthocerida - Orthoceratidae
"Orthoceras" arcuoliratum
Gastropoda
Holopea sp. Hall 1847
    = Gastropoda sp. Cuvier 1795
Wagner 2023
could be anything
    = Gastropoda indet. Cuvier 1795
Wagner 2023
could be anything
Gastropoda - Murchisoniina - Loxonematidae
Hormotoma trentonensis Ulrich and Scofield 1897
recombined as Omospira trentonensis
Gastropoda - Murchisoniina - Subulitidae
Subulites conradi Ulrich and Scofield 1897
Subulites regularis Ulrich and Scofield 1897
Gastropoda - Murchisoniina - Hormotomidae
Hormotoma simplex Wilson 1932
Hormotoma gracilis (Hall 1847)
Gastropoda - Murchisoniina - Murchisoniidae
Hormotoma salteri Ulrich and Scofield 1897
recombined as Cyrtostropha salteri
Hormotoma salteri canadensis
Gastropoda - Murchisoniina - Eotomariidae
Liospira cf. progne (Billings 1860)
Eotomaria larvata (Salter 1859)
recombined as Paraliospira larvata
Gastropoda - Murchisoniina - Straparollinidae
Straparollina cf. asperostriata (Billings 1860)
Gastropoda - Bellerophontida - Sinuitidae
Sinuites cancellatus (Hall 1847)
Sinuites cancellatus and Sinuites cancellatus angularis
Gastropoda - Bellerophontida - Temnodiscidae
? Tropidodiscus disculus (Billings 1860)
recombined as Alaskadiscus disculus
Gastropoda - Bellerophontida - Bucaniidae
Phragmolites compressus Conrad 1838
Salpingostoma cf. billingsi Wilson 1951
Gastropoda - Euomphalina - Holopeidae
Raphistomina distincta (Wilson 1921)
Raphistomina lapicida (Salter 1859)
Raphistomina aperta (Salter 1859)
Gastropoda - Euomphalina - Lesueurillidae
Eccyliomphalus sp. (Portlock 1843)
    = Eccyliopterus ottawaensis Billings 1860
Wagner 2023
Eccyliomphalus is a common misspelling of Ecculiomphalus, and Ecculiomphalus commonly is confounded with Eccyliopterus
Gastropoda - Euomphalina - Platyceratidae
Cyclonema cf. cushingi Ruedemann 1912
Bivalvia - Cyrtodontida - Cyrtodontidae
Cyrtodonta obtusa
Bivalvia - Myalinida - Ambonychiidae
Ambonychia sp. Hall 1847
Bivalvia - Solemyida - Ctenodontidae
Ctenodonta cf. nasuta (Hall 1847)
Ctenodonta cf. nasuta robusta
Strophomenata - Strophomenida - Sowerbyellidae
Sowerbyella sericea (Sowerby 1839)
recombined as Sowerbyella (Sowerbyella) sericea
Sowerbyella subovalis Wilson 1932
Sowerbyella curdsvillensis (Foerste 1912)
Sowerbyella punctostriata (Mather 1917)
synonym of Sowerbyella curdsvillensis
Strophomenata - Strophomenida - Furcitellidae
? Microtrypa cf. plana
synonym of Trigrammaria
Strophomenata - Strophomenida - Rafinesquinidae
Rafinesquina sp. Hall and Clarke 1892
Rafinesquina carlottina
Rafinesquina cf. deerensis
Rafinesquina okulitchi
Rafinesquina cf. patula
Rafinesquina cf. praecursor
Rafinesquina cf. alternata (Conrad 1838)
Rafinesquina alternata alata, Rafinesquina alternata intermedia, Rafinesquina alternata plana, Rafinesquina alternata platys, Rafinesquina alternata semiquadrata
    = Rafinesquina alata Wilson 1944
Wagner 2020
original and current combination Rafinesquina alternata alata
Rafinesquina trentonensis (Hall 1847)
Strophomenata - Strophomenida - Strophomenidae
Strophomena extensa Wilson 1932
Strophomena cf. filitexta (Hall 1847)
Strophomena cf. filitexta crenulata
Strophomena dignata Fenton 1928
Strophomena magna Wilson 1945
Opikina ampla
Opikina gloucesterensis
Opikina ovalis
Opikina wagneri
Opikina platys Wilson 1944
Opikina rugosa (Wilson 1921)
Rhynchonellata - Rhynchonellida - Rhynchotrematidae
Rhynchotrema intermedia
Rhynchotrema increbescens (Hall 1847)
Rhynchonellata - Orthida - Plaesiomyidae
Dinorthis iphigenia (Billings 1865)
recombined as Plaesiomys iphigenia
Dinorthis cf. meedsi (Winchell and Schuchert 1892)
Dinorthis cf. meedsi plana
Dinorthis pectinella Emmons 1842
Dinorthis pectinella and Dinorthis pectinella sweeneyi
Rhynchonellata - Orthida - Hesperorthidae
Hesperorthis tricenaria (Conrad 1843)
Rhynchonellata - Orthida - Plectorthidae
Doleroides pervetus
Doleroides pervetus ottawaensis
Plectorthis ottawaensis
Plectorthis cf. plicatella (Hall 1847)
Plectorthis cf. plicatella and Plectorthis plicatella trentonensis
Rhynchonellata - Orthida - Platystrophiidae
Platystrophia uxoris
Platystrophia amoena McEwan 1919
Platystrophia amoena and Platystrophia cf. amoena longicardinalis
Platystrophia trentonensis McEwan 1919
Rhynchonellata - Orthida - Dalmanellidae
Resserella resupinata
Paucicrura rogata (Sardeson 1892)
Resserella whittakeri (Ruedemann 1921)
original and current combination Dalmanella whittakeri
Rhynchonellata - Protorthida - Skenidiidae
? Skenidioides merope
Rhynchonellata - Atrypida - Anazygidae
Zygospira recurvirostris (Hall 1847)
recombined as Anazyga recurvirostra
Zygospira deflecta (Hall 1847)
Lingulata - Lingulida - Pseudolingulidae
Pseudolingula rectilateralis (Emmons 1842)
Pseudolingula rectilateralis major
Pseudolingula cf. eva (Billings 1861)
Lingulata - Lingulida - Obolidae
Lingula briseis Billings 1865
recombined as Palaeoglossa briseis
Lingulata - Lingulida - Trematidae
Trematis cf. ottawaensis
Stenolaemata - Cystoporata - Ceramoporidae
Favositella laxata
Favositella sp. Etheridge and Foord 1884
Stenolaemata - Cryptostomata - Rhinidictyidae
Rhinidictya sp. Ulrich 1882
Pachydictya acuta
Pachydictya foliata
Stenolaemata - Cryptostomata - Ptilodictyidae
Stictoporella cribrosa Ulrich 1886
Stenolaemata - Cryptostomata - Escharoporidae
Escharopora subrecta Ulrich 1886
Stenolaemata - Trepostomata - Trematoporidae
Batostoma winchelli Ulrich 1893
Stenolaemata - Trepostomata - Heterotrypidae
Dekayella trentonensis
Stenolaemata - Trepostomata - Halloporidae
Hallopora multitabulata Ulrich 1886
Stenolaemata - Trepostomata - Dittoporidae
Hemiphragma ottawaense
Stenolaemata - Trepostomida
Nicholsonella sp. Ulrich 1890
Nicholsonella wilsoni
Stenolaemata - Trepostomida - Monticuliporidae
Prasopora cf. grandis
Prasopora insularis
Prasopora simulatrix
Mesotrypa quebecensis
Homotrypa minnesotensis
Homotrypa subramosa Ulrich 1886
Ostracoda - Leperditicopida - Leperditiidae
Eoleperditia fabulites
Leperditia sp. Rouault 1851
Leperditia trentonensis
Trilobita - Asaphida - Asaphidae
Isotelus gigas (Dekay 1824)
recombined as Asaphus gigas
Isotelus iowensis (Owen 1852)
Trilobita - Corynexochida - Illaenidae
Illaenus cf. conradi Billings 1859
recombined as Thaleops conradi
Bumastus sp. Murchison 1839
Bumastoides milleri (Billings 1859)
Trilobita - Proetida - Proetidae
Proetus sp. Steininger 1831
Trilobita - Proetida - Bathyuridae
Bathyurus acutus Raymond 1913
Bathyurus extans (Hall 1847)
Raymondites ingalli (Raymond 1913)
recombined as Bathyurus (Raymondites) ingalli
Raymondites ingalli and Raymondites cf. ingalli
Raymondites cf. spiniger (Hall 1847)
recombined as Bathyurus (Raymondites) spiniger
Trilobita - Phacopida - Encrinuridae
Encrinurus cybeleformis
Encrinurus trentonensis Walcott 1880
synonym of Erratencrinurus vigilans
Trilobita - Phacopida - Cheiruridae
Ceraurus pleurexanthemus Green 1832
Ceraurus dentatus Raymond and Barton 1913
recombined as Gabriceraurus dentatus
Trilobita - Phacopida - Calymenidae
Flexicalymene senaria (Conrad 1841)
recombined as Flexicalymene (Flexicalymene) senaria
Trilobita - Phacopida - Pterygometopidae
Chasmops sp. M'Coy 1849
Chasmops bebryx
Pterygometopus sp. Schmidt 1881
Crinoidea - Monobathrida - Glyptocrinidae
Glyptocrinus sp. Hall 1847
Crinoidea - Diplobathrida - Cleiocrinidae
Cleiocrinus sp. Billings 1857
Crinoidea - Cupulocrinidae
Cupulocrinus jewetti
Cupulocrinus humilis (Billings 1857)
Crinoidea - Hybocrinida - Hybocystitidae
Hybocystites sp. Wetherby 1880
Crinoidea - Dendrocrinida - Dendrocrinidae
Ottawacrinus sp. Billings 1887
Ottawacrinus typus
Crinoidea - Calceocrinida - Calceocrinidae
Cremacrinus rugosus
Crinoidea
Lichenocrinus sp. Hall 1866
Rhombifera - Glyptocystitidae
Glyptocystites grandis Sinclair 1945
Rhombifera - Pleurocystitidae
Pleurocystites squamosus Billings 1874
Edrioasteroidea - Hemicystitidae
Hemicystites billingsi
Edrioasteroidea - Edrioasterida - Edrioasteridae
Edrioaster bigsbyi (Billings 1858)
Cyclocystoidea - Cyclocystoididae
Cyclocystoides halli Billings 1858
see common names

Geography
Country:Canada State/province:Ontario
Coordinates: 44.5° North, 78.6° West (view map)
Paleocoordinates:25.1° South, 54.7° West
Basis of coordinate:estimated from map
Geographic resolution:local area
Time
Period:Ordovician Epoch:Late/Upper Ordovician
10 m.y. bin:Ordovician 4
*Period:Middle Ordovician *Epoch:Caradocian
*Local age/stage:Trentonian
Key time interval:Chatfieldian Conodont zone: Plectodina tenuis
Age range of interval:460.90000 - 449.50000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Geological group:Simcoe Formation:Bobcaygeon Member:Hull
Stratigraphic resolution:member
Stratigraphy comments: Now considered Hull Limestone member of Bobcaygeon.
Lithology and environment
Primary lithology:gray "limestone"
Secondary lithology:brown "limestone"
Includes fossils?Y
Includes fossils?Y
Lithology description: "[A]bout 34 feet of grey, fine- and medium-grained limestone alternating with fine and medium granular calcarenitic limestone, and weathering grey. Some brown lithographic limestone is present between 23 and 24 feet above its base and a hard, bluish grey, fine- and medium-grained, in part crystalline, limestone occurs between 23 and 34 feet above its base. the latter 6 feet of limestone weathers light blue, into beds from 3 to 8 inches thick."
Environment:carbonate indet.
Geology comments: Environmental call by T. Hanson.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,microfossils
Collection methods and comments
Collection methods:chemical,field collection
Reason for describing collection:biostratigraphic analysis
Metadata
Database number:26263
Authorizer:S. Holland, P. Wagner Enterer:T. Hanson, P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-10-10 11:47:40 Last modified:2018-04-11 21:37:06
Access level:the public Released:2002-10-10 11:47:40
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]
9042 P. J. Wagner. 2023. Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023). [P. Wagner/P. Wagner/P. Wagner]