Where: Alberta, Canada (49.4° N, 110.4° W: paleocoordinates 56.5° N, 75.7° W)
• coordinate stated in text
• local area-level geographic resolution
When: Bearpaw Formation, Late/Upper Campanian (83.5 - 70.6 Ma)
• STRATIGRAPHIC RELATIONS: From the Bearpaw [Shale] Formation, which overlies the Late Campanian Oldman Formation (brackish to non-marine), andis overlain by the Eastend Fm (Maastrichtian). AGE: Late Campanian on the basis of ammonite (and other groups) biostratigraphy; Baculites compressus biozone. STRATIGRAPHIC POSITION: From unknown position within formation.
• group of beds-level stratigraphic resolution
Environment/lithology: offshore; poorly lithified, gray shale and lithified, concretionary shale
Size class: macrofossils
Preservation: cast, mold/impression, original calcite
Collected by Russell & Landes in 1934-1936; reposited in the GSC
Collection methods: surface (in situ),
• COLLECTOR: L.S. Russell and R. W. Landes. REPOSITORY: Geological Survey of Canada (GSC)
Primary reference: L. S. Russell and R. W. Landes. 1937. Geology of the Southern Alberta Plains. Part II. Paleontology of the marine formations of the Montana Group. Geological Survey of Canada Memoir 221 [A. Hendy/A. Hendy/P. Wagner]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 82638: authorized by Austin Hendy, entered by Austin Hendy on 30.07.2008
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Baculites compressus Say 1920 ammonite
Baculites ovatus Say 1820 ammonite
Baculites crickmayi Williams 1930 ammonite | |
"Rhaeboceras albertensis" = Rhaeboceras albertense, Rhaeboceras whiteavesi, "Rhaeboceras subglobosus" = Rhaeboceras subglobosum, Acanthoscaphites quadrangularis, Acanthoscaphites plenus, "Acanthoscaphites nodosus" = Hoploscaphites nodosus
"Rhaeboceras albertensis" = Rhaeboceras albertense Warren 1930 ammonite
Rhaeboceras whiteavesi Russell and Landes 1937 ammonite
"Rhaeboceras subglobosus" = Rhaeboceras subglobosum Whiteaves 1885 ammonite
Acanthoscaphites quadrangularis ammonite
Acanthoscaphites plenus Meek and Hayden 1861 ammonite
"Acanthoscaphites nodosus" = Hoploscaphites nodosus Owen 1852 ammonite | |
Placenticeras meeki ammonite
Placenticeras intercalare ammonite | |
Eutrephoceras dekayi Morton 1834 nautiloid | |
Actinosepia canadensis Whiteaves 1897 vampire squids | |
Scaphopoda | |
Dentalium gracile tusk shell | |
Cadulus sp. Philippi 1844 tusk shell | |
Gastropoda | |
Cinulia concinna snail | |
Anisomyon centrale Meek 1871 pulmonate | |
Polinices obliquata moon snail | |
Fasciolaria sp. Lamarck 1799 tulip snail | |
Anchura americana snail | |
Vanikoropsis sp. Meek 1876 snail | |
Bivalvia | |
Yoldia scitula clam
Yoldia evansi Meek and Hayden 1857 clam | |
Nucula planimarginata Meek and Hayden 1857 nut clam
Nucula cancellata Meek and Hayden 1857 nut clam | |
Crenella elegantula Meek and Hayden 1862 clam | |
Volsella galpiniana Evans and Shumard 1854 mussel
Volsella attenuata Meek and Hayden 1857 mussel
Volsella wrighti Warren 1934 mussel
Volsella anomala Russell and Landes 1937 mussel | |
"Inoceramus tenuilineatus" = Inoceramus (Cataceramus) tenuilineatus, Inoceramus sagensis, Inoceramus barabini, Inoceramus vanuxemi, Inoceramus proximus, Inoceramus subcircularis
"Inoceramus tenuilineatus" = Inoceramus (Cataceramus) tenuilineatus Hall and Meek 1855 clam
Inoceramus sagensis clam
Inoceramus barabini clam
Inoceramus vanuxemi clam
Inoceramus proximus clam | |
Pecten nebrascensis scallop | |
Anomia sp. Linnaeus 1758 jingle | |
Syncyclonema hallii scallop | |
Gervillia borealis oyster | |
Pteria linguiformis pearl oyster
Pteria notukeuensis Warren 1934 pearl oyster | |
Ostrea patina oyster
Ostrea sp. Linnaeus 1758 oyster | |
Nemodon canadensis Russell and Landes 1937 clam | |
Limopsis parvula clam | |
Protocardia borealis cockle
Protocardia subquadrata Evans and Shumard 1857 cockle | |
Mactra warrenana clam | |
Arctica ovata clam
Veniella sp. Stoliczka 1870 clam | |
Martesia sp. Sowerby 1824 clam | |
Leptosolen albertensis Russell and Landes 1937 clam | |
Cuspidaria sp. Dall 1886 clam | |
Pholadomya sp. Sowerby 1823 clam | |
Thracia gracilis clam | |
Clisocolus moreauensis Meerk and Hayden 1861 clam | |
Lucina occidentalis clam
Lucina subundata clam |