PBDB Collection

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

Where: Ontario, Canada (44.5° N, 79.0° W: paleocoordinates 24.9° S, 55.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Plectodina tenuis conodont zone, Lower Member (Verulam Formation), Shermanian (457.3 - 449.6 Ma)

• 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 26272: authorized by Steven Holland, entered by Tori Hanson on 10.10.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

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Trilobita
Asaphida - Asaphidae	Isotelus gigas Isotelus gigas Dekay 1824 trilobite
Proetida - Bathyuridae	"Raymondites ingalli" = Bathyurus (Raymondites) ingalli "Raymondites ingalli" = Bathyurus (Raymondites) ingalli Raymond 1913 trilobite
Phacopida - Cheiruridae	Ceraurinus marginatus, Ceraurus pleurexanthemus Ceraurinus marginatus Barton 1913 trilobite Ceraurus pleurexanthemus Green 1832 trilobite
Phacopida - Calymenidae	"Flexicalymene senaria" = Flexicalymene (Flexicalymene) senaria "Flexicalymene senaria" = Flexicalymene (Flexicalymene) senaria Conrad 1841 trilobite
Phacopida - Pterygometopidae	cf. Achatella achates cf. Achatella achates Billings 1860 trilobite
Stenolaemata
Trepostomata - Heterotrypidae	Dekayia cf. typica Dekayia cf. typica
Trepostomata - Halloporidae	Hallopora ampla, Hallopora dumalis Hallopora ampla Hallopora dumalis Ulrich 1893 Hallopora dumalis magna
Cystoporata - Ceramoporidae	Favositella laxata Favositella laxata
Cryptostomata - Rhinidictyidae	Rhinidictya mutabilis Rhinidictya mutabilis Ulrich 1882
Trepostomida - Monticuliporidae	Prasoporina selwyni, Mesotrypa whiteavesi, Homotrypa similis Prasoporina selwyni Mesotrypa whiteavesi Homotrypa similis Foord 1883
Craniata
Trimerellida - Trimerellidae	Dinobolus sp., Dinobolus cf. canadensis Dinobolus sp. Hall 1871 Dinobolus cf. canadensis
Rhynchonellata
Protorthida - Skenidiidae	? Skenidioides merope ? Skenidioides merope
Orthida - Dalmanellidae	Paucicrura rogata Paucicrura rogata Sardeson 1892
Orthida - Plaesiomyidae	Dinorthis pectinella, "Dinorthis iphigenia" = Plaesiomys iphigenia Dinorthis pectinella Emmons 1842 Dinorthis pectinella and D. cf. pectinella sweeneyi "Dinorthis iphigenia" = Plaesiomys iphigenia Billings 1865
Orthida - Hesperorthidae	Hesperorthis cf. tricenaria Hesperorthis cf. tricenaria Conrad 1843
Orthida - Plectorthidae	Doleroides pervetus Doleroides pervetus D. pervetus ottawanus
Orthida - Platystrophiidae	Platystrophia felis, Platystrophia preponderosa, Platystrophia uxoris, Platystrophia cf. trentonensis Platystrophia felis Platystrophia preponderosa Platystrophia uxoris Platystrophia cf. trentonensis McEwan 1919
Rhynchonellida - Rhynchotrematidae	Rhynchotrema intermedia, Rhynchotrema increbescens Rhynchotrema intermedia Rhynchotrema increbescens Hall 1847
Strophomenata
Strophomenida - Furcitellidae	"Microtrypa altilis" = Trigrammaria altilis "Microtrypa altilis" = Trigrammaria altilis Wilson 1945
Strophomenida - Strophomenidae	Opikina tumida, Opikina septata Opikina tumida Opikina septata Salmon 1942 Opikina septata borealis
Strophomenida - Rafinesquinidae	Rafinesquina cf. okulitchi, Rafinesquina praedeltoidea, Rafinesquina gibbosa, Rafinesquina trentonensis, "Rafinesquina intermedia" = Rafinesquina alternata intermedia, Rafinesquina deltoidea Rafinesquina cf. okulitchi Rafinesquina praedeltoidea Rafinesquina gibbosa Wilson 1944 Rafinesquina trentonensis Hall 1847 "Rafinesquina intermedia" = Rafinesquina alternata intermedia Wilson 1944 R. alternata intermedia and R. alternata plana and R. alternata transversa Rafinesquina deltoidea Conrad 1838
Strophomenida - Sowerbyellidae	Sowerbyella subovalis, "Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea, "Sowerbyella punctostriata" = Sowerbyella curdsvillensis Sowerbyella subovalis Wilson 1932 "Sowerbyella sericea" = Sowerbyella (Sowerbyella) sericea Sowerby 1839 "Sowerbyella punctostriata" = Sowerbyella curdsvillensis Foerste 1912
Lingulata
Lingulida - Trematidae	Trematis ottawaensis Trematis ottawaensis Trematis ottawaensis and T. cf. ottawaensis
Gastropoda
Bellerophontida - Bucaniidae	"Salpingostoma expansum" = Salpingostoma expansa "Salpingostoma expansum" = Salpingostoma expansa Hall 1847 snail
Bellerophontida - Sinuitidae	Sinuites cancellatus Sinuites cancellatus Hall 1847 snail
Euomphalina - Holopeidae	Raphistomina cf. rugata, Raphistomina distincta Raphistomina cf. rugata Ulrich and Scofield 1897 snail Raphistomina distincta Wilson 1921 snail
Murchisoniina - Subulitidae	"Hormotoma bellicincta" = Eroicaspira bellicincta "Hormotoma bellicincta" = Eroicaspira bellicincta Hall 1847 snail
Murchisoniina - Murchisoniidae	"Hormotoma salteri" = Cyrtostropha salteri "Hormotoma salteri" = Cyrtostropha salteri Ulrich and Scofield 1897 snail H. salteri canadensis
Murchisoniina - Hormotomidae	Hormotoma gracilis, Hormotoma simplex Hormotoma gracilis Hall 1847 snail Hormotoma simplex Wilson 1932 snail H. simplex and H. simplex paquettensis
Murchisoniina - Lophospiridae	"Hormotoma cf. major" = Lophospira major, Lophospira perangulata "Hormotoma cf. major" = Lophospira major Hall 1852 snail Lophospira perangulata Hall 1847 snail
Murchisoniina - Loxonematidae	"Hormotoma trentonensis" = Omospira trentonensis "Hormotoma trentonensis" = Omospira trentonensis Ulrich and Scofield 1897 snail H. trentonensis and H. trentonensis crassa
Murchisoniina - Eotomariidae	Eotomaria sp., Eotomaria cf. dryope, Liospira americana, Liospira cf. progne, Liospira micula Eotomaria sp. Ulrich and Scofield 1897 snail Eotomaria cf. dryope Billings 1865 snail Liospira americana Billings 1860 snail Liospira cf. progne Billings 1860 snail Liospira micula Hall and Whitney 1862 snail
Bivalvia
Myalinida - Ambonychiidae	Ambonychia cf. orbicularis Ambonychia cf. orbicularis Emmons 1842 clam
Cyrtodontida - Cyrtodontidae	Cyrtodonta glabella, Cyrtodonta obtusa, "Whitella sp." = Cyrtodontula, Vanuxemia media Cyrtodonta glabella clam Cyrtodonta obtusa clam "Whitella sp." = Cyrtodontula Tomlin 1931 clam Vanuxemia media clam
Modiomorphida - Modiomorphidae	"Endodesma cf. orthonotum" = Cymatonota, Modiolopsis lata "Endodesma cf. orthonotum" = Cymatonota clam Modiolopsis lata clam
Paracrinoidea
Comarocystitida - Amygdalocystitidae	Amygdalocystites florealis Amygdalocystites florealis Billings 1854
Crinoidea
Porocrinida -	Palaeocrinus pulchellus, Porocrinus conicus Palaeocrinus pulchellus Sea lily Porocrinus conicus Billings 1857 Sea lily
Anthozoa
Stauriida - Streptelasmatidae	Streptelasma corniculum Streptelasma corniculum Hall 1847 horn coral
Scyphozoa
Conulariida - Conulariidae	Conularia trentonensis Conularia trentonensis jellyfish