Also known as ETE Locality 1564
Where: Glacier County, Montana (48.6° N, 113.8° W: paleocoordinates 56.5° N, 79.1° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Two Medicine Formation (Montana Group), Campanian (83.6 - 72.1 Ma)
• ETE dating method: absolute, ETE age comment: frm bentonites radiometric intage_max, radiometric intage_min
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•Foreman et al. 2008: 40Ar/39Ar radioisotopic age data reported for the Two Medicine Formation (Rogers et al., 1993; present study) are consistent with the unit accumulating during most of the Campanian Stage (83.5–70.6 Ma, Gradstein et al., 2004), with deposition definitively commencing prior to 80 Ma and terminating shortly after 74 Ma.
• bed-level stratigraphic resolution
Environment/lithology: lacustrine; silty mudstone
Size classes: macrofossils, mesofossils
Collection methods: quarrying, mechanical,
• ETE reference list: 478, 483, 81
•Includes coprolites.
Primary reference: D. J. Varricchio. 1992. Taphonomy and histology of the Upper Cretaceous theropod dinosaur Troodon formosus: life history implications. Journal of Vertebrate Paleontology 12(3, suppl.):57A [M. Carrano/M. Carrano/M. Carrano]more details
Purpose of describing collection: taphonomic analysis
PaleoDB collection 22689: authorized by Anna Behrensmeyer, entered by Anna Behrensmeyer on 29.05.2001, edited by Victoria Egerton and Matthew Carrano
Creative Commons license: CC BY (attribution)
Taxonomic list
Pinopsida | |
Taxodiaceae indet.5 Saporta 1865 | |
unclassified | |
Charophyta indet.5 Migula 1890 | |
Gastropoda | |
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Bivalvia | |
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Deuteropoda | |
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Gnathostomata | |
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Amphibia | |
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Mammalia | |
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Reptilia | |
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"Chelonia indet." = Testudines5
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Hadrosauridae indet.5, Hadrosaurinae indet.3, Gryposaurus sp.4, "Prosaurolophus blackfeetensis" = Prosaurolophus maximus4, Lambeosaurinae indet.3, Hypacrosaurus cf. stebingeri3
"Prosaurolophus blackfeetensis" = Prosaurolophus maximus4 Brown 1916 hadrosaurine ETE occurrence; species: .
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Aves | |
"Avisaurus gloriae n. sp." = Gettyia gloriae6
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Reptilia | |
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Actinopteri | |
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Notogoneus montenensis n. sp.3
Notogoneus montenensis n. sp.3 |