Eldon Hill (S5), No. 3 section, lot 19, Lake Simcoe area: Shermanian, Canada

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Crinoidea - Porocrinida
Porocrinus conicus Billings 1857
Palaeocrinus pulchellus
Paracrinoidea - Comarocystitida - Amygdalocystitidae
Amygdalocystites florealis Billings 1854
Lingulata - Lingulida - Trematidae
Trematis ottawaensis
Trematis ottawaensis and T. cf. ottawaensis
Craniata - Trimerellida - Trimerellidae
Dinobolus sp. Hall 1871
Dinobolus cf. canadensis
Strophomenata - Strophomenida - Sowerbyellidae
Sowerbyella subovalis Wilson 1932
Sowerbyella sericea (Sowerby 1839)
recombined as Sowerbyella (Sowerbyella) sericea
Sowerbyella punctostriata (Mather 1917)
synonym of Sowerbyella curdsvillensis
Strophomenata - Strophomenida - Furcitellidae
Microtrypa altilis Wilson 1945
recombined as Trigrammaria altilis
Strophomenata - Strophomenida - Strophomenidae
Opikina tumida
Opikina septata Salmon 1942
Opikina septata borealis
Strophomenata - Strophomenida - Rafinesquinidae
Rafinesquina cf. okulitchi
Rafinesquina praedeltoidea
Rafinesquina trentonensis (Hall 1847)
Rafinesquina deltoidea (Conrad 1838)
Rafinesquina gibbosa Wilson 1944
Rafinesquina alternata (Conrad 1838)
R. alternata intermedia and R. alternata plana and R. alternata transversa
    = Rafinesquina intermedia Wilson 1944
Wilson 1946
original and current combination Rafinesquina alternata intermedia
Rhynchonellata - Protorthida - Skenidiidae
? Skenidioides merope
Rhynchonellata - Rhynchonellida - Rhynchotrematidae
Rhynchotrema intermedia
Rhynchotrema increbescens (Hall 1847)
Rhynchonellata - Orthida - Dalmanellidae
Paucicrura rogata (Sardeson 1892)
Rhynchonellata - Orthida - Plaesiomyidae
Dinorthis pectinella Emmons 1842
Dinorthis pectinella and D. cf. pectinella sweeneyi
Dinorthis iphigenia (Billings 1865)
recombined as Plaesiomys iphigenia
Rhynchonellata - Orthida - Hesperorthidae
Hesperorthis cf. tricenaria (Conrad 1843)
Rhynchonellata - Orthida - Platystrophiidae
Platystrophia felis
Platystrophia preponderosa
Platystrophia uxoris
Platystrophia cf. trentonensis McEwan 1919
Rhynchonellata - Orthida - Plectorthidae
Doleroides pervetus
D. pervetus ottawanus
Stenolaemata - Cystoporata - Ceramoporidae
Favositella laxata
Stenolaemata - Trepostomida - Monticuliporidae
Mesotrypa whiteavesi
Prasoporina selwyni
Homotrypa similis Foord 1883
Stenolaemata - Cryptostomata - Rhinidictyidae
Rhinidictya mutabilis Ulrich 1882
Stenolaemata - Trepostomata - Heterotrypidae
Dekayia cf. typica
Stenolaemata - Trepostomata - Halloporidae
Hallopora ampla
Hallopora dumalis Ulrich 1893
Hallopora dumalis magna
Gastropoda - Bellerophontida - Sinuitidae
Sinuites cancellatus (Hall 1847)
Gastropoda - Bellerophontida - Bucaniidae
Salpingostoma expansum (Hall 1847)
recombined as Salpingostoma expansa
Gastropoda - Murchisoniina - Hormotomidae
Hormotoma gracilis (Hall 1847)
Hormotoma simplex Wilson 1932
H. simplex and H. simplex paquettensis
Gastropoda - Murchisoniina - Murchisoniidae
Hormotoma salteri Ulrich and Scofield 1897
recombined as Cyrtostropha salteri
H. salteri canadensis
Gastropoda - Murchisoniina - Lophospiridae
Lophospira perangulata (Hall 1847)
Hormotoma cf. major (Hall 1852)
recombined as Lophospira major
Gastropoda - Murchisoniina - Loxonematidae
Hormotoma trentonensis Ulrich and Scofield 1897
recombined as Omospira trentonensis
H. trentonensis and H. trentonensis crassa
Gastropoda - Murchisoniina - Eotomariidae
Liospira americana (Billings 1860)
Liospira cf. progne (Billings 1860)
Liospira micula (Hall and Whitney 1862)
Eotomaria sp. Ulrich and Scofield 1897
Eotomaria cf. dryope (Billings 1865)
Gastropoda - Murchisoniina - Subulitidae
Hormotoma bellicincta (Hall 1847)
recombined as Eroicaspira bellicincta
Gastropoda - Euomphalina - Holopeidae
Raphistomina cf. rugata Ulrich and Scofield 1897
Raphistomina distincta (Wilson 1921)
Bivalvia - Myalinida - Ambonychiidae
Ambonychia cf. orbicularis (Emmons 1842)
Bivalvia - Cyrtodontida - Cyrtodontidae
Vanuxemia media
Cyrtodonta glabella
Cyrtodonta obtusa
Whitella sp. Ulrich 1890
synonym of Cyrtodontula
Bivalvia - Modiomorphida - Modiomorphidae
Modiolopsis lata
Endodesma cf. orthonotum
synonym of Cymatonota
Trilobita - Proetida - Bathyuridae
Raymondites ingalli (Raymond 1913)
recombined as Bathyurus (Raymondites) ingalli
Trilobita - Phacopida - Calymenidae
Flexicalymene senaria (Conrad 1841)
recombined as Flexicalymene (Flexicalymene) senaria
Trilobita - Phacopida - Pterygometopidae
cf. Achatella achates (Billings 1860)
Trilobita - Phacopida - Cheiruridae
Ceraurinus marginatus Barton 1913
Ceraurus pleurexanthemus Green 1832
Trilobita - Asaphida - Asaphidae
Isotelus gigas (Dekay 1824)
recombined as Asaphus gigas
Scyphozoa - Conulariida - Conulariidae
Conularia trentonensis
Anthozoa - Stauriida - Streptelasmatidae
Streptelasma corniculum Hall 1847
see common names

Geography
Country:Canada State/province:Ontario
Coordinates: 44.5° North, 79.0° West (view map)
Paleocoordinates:24.9° South, 55.0° 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:Shermanian Conodont zone: Plectodina tenuis
Age range of interval:457.00000 - 449.80000 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:26272
Authorizer:S. Holland, P. Wagner Enterer:T. Hanson, P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-10-10 20:09:01 Last modified:2018-04-04 17:23:50
Access level:the public Released:2002-10-10 20:09:01
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:

62157 A. E. Wilson. 1946. Brachiopoda of the Ottawa Formation of the Ottawa - St. Lawrence Lowland. Geological Survey of Canada Bulletin 8:1-149 [P. Wagner/P. Wagner]