Camperdown, Nottawasaga Bay, Lake Simcoe Area (Ordovician of Canada)

Where: Ontario, Canada (44.5° N, 80.4° W: paleocoordinates 23.8° S, 53.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Climacograptus pygmaeus graptolite zone, Thornbury Member (Whitby Formation), Maysvillian (452.0 - 449.5 Ma)

• Charts make it clear that it's Maysvillian. This is now considered part of the Blue Mountain formation

• member-level stratigraphic resolution

Environment/lithology: shallow subtidal; gray, blue shale and brown, carbonaceous shale

• Shallow but clear water.
• Gray and blue shale; gray, bluish and greenish soft shale and clay shale, weathers gray, bluish gray, with minor brown, bituminous and carbonaceous shale. Sometimes compact with hackly or conchoidal fracture, moderately fossiliferous.

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 26302: authorized by Steven Holland, entered by Tori Hanson on 11.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
"Calmanella" fultonensis
"D." fulmonensis lorrainensis
Trilobita
 Phacopida - Calymenidae
Flexicalymene meeki Foerste 1910 trilobite
 Olenida - Olenidae
Triarthrus spinosus Billings 1857 trilobite
T. spinosus rougensis
 Asaphida - Asaphidae
Homotelus stegops Green 1832 trilobite
 Asaphida - Trinucleidae
Cryptolithus bellulus Ulrich 1879 trilobite
Cryptolithus cf. recurvus Ulrich 1919 trilobite
Ostracoda
 Palaeocopida -
Palaeoscolecida
  -
Strophomenata
 Strophomenida - Sowerbyellidae
Sowerbyella cf. rugosa Meek 1873
S. cf. rugosa clarkesvillensis
 Strophomenida - Rafinesquinidae
Brachiopoda
 Inarticulata -
Lingulata
 Lingulida - Obolidae
 Lingulida - Lingulidae
Lingula cf. curta Conrad 1842
Bivalvia
 Unioni - Lyrodesmatidae
 Nuculida - Praenuculidae
"Ctenodonta filistriata" = Homilodonta filistriata
"Ctenodonta filistriata" = Homilodonta filistriata Ulrich 1894 clam
 Protobranchia -
"Cleidophorus neglectus" = Nuculites, "Cleidophorus planulatus" = Nuculites planulatus
"Cleidophorus neglectus" = Nuculites clam
"Cleidophorus planulatus" = Nuculites planulatus Conrad 1841 clam
Gastropoda
 Bellerophontida - Plectonotidae
Tetranota cf. rugosa Emmons 1855 snail
 Murchisoniina - Eotomariidae
Liospira cf. micula Hall and Whitney 1862 snail
Tentaculita
 Cornulitida - Cornulitidae
Tergomya
 Archinacellida - Archinacellidae
Archinacella cf. subcarinata Ulrich and Scofield 1897
Cephalopoda
 Orthocerida -
 Orthocerida - Geisonoceratidae
Stenolaemata
 Fenestrata -
 Trepostomida -
 Cystoporata - Ceramoporidae
Graptolithina
 Diplograptoidea - Diplograptidae
"Glossograptus quadrimucronatus" = Orthograptus quadrimucronatus Hall 1865 diplograptoid
Diplograptus montis diplograptoid
 Dithecoidea -
Mastigograptus tenuiramosus Walcott 1883 graptolite
 Graptoloida -
 Bireclinata -