Where: Billings County, North Dakota (47.0° N, 103.7° W: paleocoordinates 52.0° N, 81.9° W)
• coordinate stated in text
• small collection-level geographic resolution
When: Bullion Creek Formation, Tiffanian (61.7 - 56.8 Ma)
• Bullion Creek (Tongue River) Fm., 20 m below lignite bed marking base of Sentinel Butte Fm.
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•Two beds, upper and lower (lignitic)
• group of beds-level stratigraphic resolution
Environment/lithology: mire or swamp; gray shale and carbonaceous shale
Size class: macrofossils
Collected by B. Erickson and crew in 1970–1996
Collection methods: quarrying, surface (in situ),
Primary reference: B. R. Erickson. 1991. Flora and fauna of the Wannagan Creek Quarry: Late Paleocene of North America. Scientific Publications of the Science Museum of Minnesota 7(3):1-19 [J. Alroy/J. Alroy/M. Carrano]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 15000: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jered Karr, Philip Mannion, Matthew Carrano and Patricia Holroyd
Creative Commons license: CC BY (attribution)
Taxonomic list
Polypodiopsida | |
Azolla sp.7 Lamarck 1783 | |
Angiospermae | |
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Amphibia | |
Scapherpeton sp. Cope 1876 salamander | |
Anura indet. frog | |
Reptilia | |
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Varanidae indet. Hardwicke and Gray 1824 monitor lizard | |
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Amphisbaenidae indet. worm lizard | |
Aves | |
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Dakotornis cooperi n. gen. n. sp.5
Dakotornis cooperi n. gen. n. sp.5 Erickson 1975 shorebird SMM P74.24.106 - holotype (complete right humerus), P.75.22.7, P.75.22.25
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Reptilia | |
"Leidyosuchus formidabilis n. sp." = Borealosuchus formidabilis6
"Leidyosuchus formidabilis n. sp." = Borealosuchus formidabilis6 Erickson 1976 crocodilian SMM P71.16.28 Complete skull
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Wannaganosuchus brachymanus n. gen. n. sp.7
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Champsosaurus gigas Erickson 1972 choristodere | |
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Protochelydra zangerli n. gen. n. sp.
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Baenidae indet. Cope 1882 turtle | |
Mammalia | |
Ignacius sp. Matthew and Granger 1921 primate | |
Plesiadapis sp. Gervais 1877 primate
Plesiadapis cf. fodinatus Jepsen 1930 primate | |
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Entomolestes sp. Matthew 1909 hedgehog | |
Leptacodon sp. Matthew and Granger 1921 placental "cf. Leptacodon" is also listed, but as a lipotyphlan instead of a proteuthere, indicating that both the true Leptacodon and the "L." packi genus are present
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Thryptacodon sp. Matthew and Granger 1915 condylarth
Thryptacodon cf. australis Simpson 1935 condylarth | |
Ectocion sp. Cope 1882 condylarth
Phenacodus sp. Cope 1873 condylarth | |
Labidolemur soricoides Matthew and Granger 1921 eutherian | |
cf. Palaeoryctes sp. Matthew 1913 eutherian
cf. Pararyctes sp. Van Valen 1966 eutherian | |
Peradectes sp. Matthew and Granger 1921 marsupial | |
Ptilodus sp. Cope 1881 multituberculate
Ptilodus wyomingensis Jepsen 1940 multituberculate | |
Neoplagiaulax cf. hunteri Simpson 1936 multituberculate
Neoplagiaulax mckennai Sloan 1987 multituberculate
Neoplagiaulax hazeni Jepsen 1940 multituberculate | |
Insecta | |
Gomphaeschna schrankii n. sp.8
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