Cedar Glen (S8), lot 11. Lake Simcoe area: Chatfieldian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Anthozoa - Stauriida - Streptelasmatidae
Streptelasma corniculum Hall 1847
Pterobranchia - Graptoloidea - Diplograptidae
Diplograptus cf. amplexicaulis (Hall 1847)
recombined as Rectograptus amplexicaulis
Diplograptus cf. amplexicaulis pertenuis
Gastropoda - Murchisoniina - Eotomariidae
Liospira micula (Hall and Whitney 1862)
Liospira cf. progne (Billings 1860)
Gastropoda - Bellerophontida - Sinuitidae
Sinuites cancellatus (Hall 1847)
Sinuites cancellatus and Sinuites cancellatus angularis
Sinuites bilobatus (de Sowerby and Murchison 1839)
Sinuites bilobatus and Sinuites bilobatus corrugatus
    = Sinuites corrugatus Hall 1847
Wahlman 1992
synonym of Sinuites cancellatus
Gastropoda - Bellerophontida - Bucaniidae
Salpingostoma cf. expansum (Hall 1847)
recombined as Salpingostoma expansa
Gastropoda - Euomphalina - Holopeidae
Raphistomina lapicida (Salter 1859)
Raphistomina rugata Ulrich and Scofield 1897
Strophomenata - Strophomenida - Sowerbyellidae
Sowerbyella cf. curdsvillensis (Foerste 1912)
Sowerbyella sericea (Sowerby 1839)
recombined as Sowerbyella (Sowerbyella) sericea
Sowerbyella subovalis Wilson 1932
Strophomenata - Strophomenida - Strophomenidae
Opikina platys Wilson 1944
Strophomena sp. Rafinesque and De Blainville 1824
Strophomenata - Strophomenida - Rafinesquinidae
Rafinesquina deltoidea (Conrad 1838)
Rafinesquina trentonensis (Hall 1847)
Rafinesquina alternata (Conrad 1838)
Rafinesquina alternata intermedia and Rafinesquina alternata plana and Rafinesquina alternata transversa
    = Rafinesquina intermedia Wilson 1944
Wagner 2020
original and current combination Rafinesquina alternata intermedia
Rhynchonellata - Pentamerida - Parastrophinidae
Parastrophina hemiplicata (Hall 1847)
Rhynchonellata - Orthida - Plaesiomyidae
Dinorthis cf. browni
Dinorthis cf. pervetus
Dinorthis cf. pervetus ottawanus
Dinorthis pectinella Emmons 1842
Dinorthis pectinella and Dinorthis cf. pectinella sweeneyi
Rhynchonellata - Orthida - Platystrophiidae
Platystrophia hermitagensis
Platystrophia cf. uxoris
Platystrophia trentonensis McEwan 1919
Platystrophia amoena McEwan 1919
Platystrophia amoena longicardinalis
Rhynchonellata - Orthida - Plectorthidae
Plectorthis pulchella
Plectorthis plicatella (Hall 1847)
Rhynchonellata - Orthida - Dalmanellidae
Paucicrura rogata (Sardeson 1892)
Rhynchonellata - Atrypida - Anazygidae
Zygospira recurvirostris (Hall 1847)
recombined as Anazyga recurvirostra
Zygospira deflecta (Hall 1847)
Rhynchonellata - Rhynchonellida - Rhynchotrematidae
Rhynchotrema intermedia
Rhynchotrema increbescens (Hall 1847)
Lingulata - Lingulida - Obolidae
Lingula trentonensis Conrad 1842
recombined as Lingula (Palaeoglossa) trentonensis
Lingula cf. riciniformis Hall 1847
recombined as Glossina riciniformis
Lingulata - Lingulida - Lingulidae
Lingula sp. Bruguiére 1797
Lingulata - Lingulida - Pseudolingulidae
cf. Pseudolingula eva (Billings 1861)
Lingulata - Lingulida - Trematidae
Trematis ottawaensis
Craniata - Craniopsida - Craniopsidae
Pholidops trentonensis
synonym of Craniops
Stenolaemata - Trepostomida - Monticuliporidae
Prasopora simulatrix
Prasopora semioculata
Stenolaemata - Trepostomata - Trematoporidae
Batostoma cf. superbum
Stenolaemata - Trepostomata - Aisenvergiidae
Eridotrypa aedilis Eichwald 1855
Stenolaemata - Trepostomata - Halloporidae
Hallopora cf. ampla
Trilobita - Asaphida - Asaphidae
Isotelus sp. Dekay 1824
Trilobita - Corynexochida - Illaenidae
Illaenus americanus Billings 1859
replaced by Thaleops laurentiana
Trilobita - Phacopida - Calymenidae
Flexicalymene senaria (Conrad 1841)
recombined as Flexicalymene (Flexicalymene) senaria
see common names

Geography
Country:Canada State/province:Ontario
Coordinates: 44.5° North, 78.7° West (view map)
Paleocoordinates:25.1° South, 54.8° 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
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:26269
Authorizer:S. Holland, P. Wagner Enterer:T. Hanson, P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-10-10 18:20:37 Last modified:2018-03-24 00:25:37
Access level:the public Released:2002-10-10 18:20:37
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]
10963 G.P. Wahlman. 1992. Middle and Upper Ordovician symmetrical univalved mollusks (Monoplacophora and Bellerophontina) of the Cincinnati Arch region. United States Geological Survey Professional Paper 1066(O):1-123 [P. Wagner/P. Wagner/E. Ito]