Also known as ETE Locality 180, Almont,
Where: Morton County, North Dakota (46.9° N, 101.4° W: paleocoordinates 51.1° N, 81.3° W)
• outcrop-level geographic resolution
When: Sentinel Butte Member (Fort Union Formation), Clarkforkian (56.8 - 55.8 Ma)
• ETE dating method: time_unit, ETE age comment: .
• bed-level stratigraphic resolution
Environment/lithology: lacustrine; lithified, brown, yellow, cherty/siliceous shale
Size class: macrofossils
Preservation: mold/impression, permineralized, replaced with silica
Collection methods: quarrying,
• ETE Size: .; ETE reference list: 122, 121, 88, ; ETE museum list:
Primary reference: P. R. Crane, S. R. Manchester, and D. L. Dilcher. 1990. A Preliminary Survey of Fossil Leaves and Well-Preserved Reproductive Structures from the Sentinel Butte Formation (Paleocene) near Almont, North Dakota. Fieldiana, Geology, New Series 20 [S. Wing/S. Wing/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 21372: authorized by Scott Wing, entered by Scott Wing on 14.10.1992, edited by John Alroy, Hallie Sims, Hongshan Wang and Patricia Holroyd
Creative Commons license: CC BY (attribution)
Taxonomic list
• Relative abundance: abundant (>120 specimens), very common (60 - 90), common (30 - 59), occasional (16 - 29), rare (6 - 15), very rare (1 - 5).
Show authors, comments, and common names
unclassified |
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Meliosoma rostellata, Angiospermeae "Schizocarpic samara", Angiospermeae "nonschizocarpic samara", Angiospermeae "Elliptical biwinged fruit", Angiospermeae "Fruit with 3 laterally attached wings", Angiospermeae "Pedicellate capsule with papillate seeds", Angiospermeae "head of tricarpellate fruits", Angiospermeae "6- to 7- loculed fibrous fruit", Angiospermeae "Fruit of 9 to 11 single-seeded locules", Angiospermeae "Thick-walled unilocular fruit", Angiospermeae "Globose fruit with irregular surface pits", Angoispermeae "Six-lobed calyx", Angiospermeae "Fruit with 5 to 6 concrescent follicles", Angiospermeae "Clavate structure", Angiospermeae "Fleshy fruit", Angiospermeae "Four-loculed winged fruit", Angiospermeae "Globose pedicellate capsule", Angiospermeae "Asymmetric ellipsoidal seed", Angiospermeae "Elongate infructescence", Angiospermeae "Staminate inflorescence with tricolpate pollen", Angiospermeae "Staminate inflorescence with monosulcate pollen", Angiospermeae "Lacunate leaf", Angiospermeae "Leaf type I", Angiospermeae "Leaf type II", Angiospermeae "Leaf type III", Angiospermeae "Leaf type IV", Angiospermeae "Leaf type V", Angiospermeae "Leaf type VI", Angiospermeae "Leaf type VII", Angiospermeae "Leaf type VIII", Angiospermeae "Leaf type IX", Angiospermeae "Leaf type X", Angiospermeae "Leaf type XI"
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Ginkgoopsida |
Ginkgoales - Ginkgoaceae |
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Angiospermae |
Oxalidales - Oxalidaceae |
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Fagales - Juglandaceae |
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Dicotyledoneae |
Myrtales - Myrtaceae |
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Angiospermae |
Cornales - Cornaceae |
Nyssidium articum
follicles (rare), leaves (very rare), staminate inflorescences (very rare)
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Icacinales - Icacinaceae |
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Dipsacales - Caprifoliaceae |
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Trochodendrales - Trochodendraceae |
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Ranunculales - Menispermaceae |
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Proteales - Platanaceae |
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Mesangiosperms - Araceae |
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Monocotyledoneae - |
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Pinopsida |
Pinales - Taxodiaceae |
cf. Parataxodium sp. Arnold and Lowther 1955
leafy shoots (common), ovulate cones (occasional), pollen cones (common), seeds (rare)
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Amphibia |
Caudata - Urodela |
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Actinopteri |
Teleostei - |
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Life - |
Palaeocarpinus sp. Crane 1981
infructescences + fruits (abundant), staminate inflorescences (common), leaves (abundant)
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