Melville Peninsula, west-southwest Hall Beach, Bad Cache Rapids Formation (Ordovician of Canada)

Where: Northwest Territories, Canada (68.8° N, 81.6° W: paleocoordinates 4.0° S, 42.0° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Bad Cache Rapids Formation, Wildernessian (457.3 - 449.6 Ma)

• formation-level stratigraphic resolution

Environment/lithology: open shallow subtidal; brown, argillaceous limestone

• Thin-bedded, knobby-weathered, light brown fossiliferous limestone, argillaceous partings, low gentle dip westward, 10 ft. exposed.

Size class: macrofossils

Primary reference: T. E. Bolton. 1977. Ordovician megafauna, Melville Peninsula, southeastern District of Franklin. Geological Survey of Canada, Bulletin 269:23-75 [S. Holland/T. Hanson/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 26949: authorized by Steven Holland, entered by Tori Hanson on 09.11.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Echinodermata spp., "Astraeospongid" sp., "Isotelid" sp.
Echinodermata spp. Klein 1754
Columnal debris and echinoderm plates
Rhynchonellata
 Atrypida - Anazygidae
Zygospira sp.
Zygospira sp. Hall 1862
 Orthida - Plaesiomyidae
"Plaesiomys (Dinorthis) sp." = Dinorthis
"Plaesiomys (Dinorthis) sp." = Dinorthis Hall and Clarke 1892
Stenolaemata
 Trepostomida - Amplexoporidae
Amplexopora arctica
 Cryptostomata - Arthrostylidae
Helopora sp.
Helopora sp. Hall 1851
 Cryptostomata - Rhinidictyidae
Rhinidictya sp.
Rhinidictya sp. Ulrich 1882
Cephalopoda
 Endocerida - Endoceratidae
Endoceras sp.
Endoceras sp. Hall 1847
 Actinocerida - Actinoceratidae
Actinoceras ruedemanni
Actinoceras ruedemanni
Actinoceras ruedemanni var. clarkei [entered as Actinoceras ruedemanni]
Gastropoda
 Euomphalina - Macluritidae
Maclurites sp.
Maclurites sp. Le Sueur 1818 snail
Ostracoda
 Leperditicopida - Leperditiidae
Eoleperditia sp.
Eoleperditia sp. Swartz 1949 ostracod
Trilobita
 Corynexochida - Illaenidae
"Bumastus (Bumastoides) sp." = Bumastoides
"Bumastus (Bumastoides) sp." = Bumastoides Whittington 1954 trilobite
Anthozoa
 Heliolitida - Cyrtophyllidae
Cyrtophyllum pattersoni
Chlorophyceae
  - Receptaculitidae
Receptaculites sp.
Receptaculites sp. Defrance 1827