West Hadrosaur Bonebed, MOR TM-067 (Cretaceous of the United States)

Also known as ETE Locality 1566, Badger Creek

Where: Glacier County, Montana (48.5° N, 112.7° W: paleocoordinates 56.1° N, 78.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Two Medicine Formation (Montana Group), Campanian (83.6 - 72.1 Ma)

• ETE dating method: time_unit, ETE age comment: 0 radiometric intage_min

•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: fluvial; silty mudstone

• ETE sed env 1: fluvial, ETE sed env 2: . ETE event: ., ETE env comment: drought
• ETE rock type adj: silty, ETE lithology comments: .

Size class: macrofossils

Collection methods: quarrying, mechanical,

• ETE reference list: 478, 479, 480, 482, 485, 483, 454

Primary reference: D. J. Varricchio. 1993. Taphonomy of Jack's Birthday site, a diverse dinosaur bone bed. Journal of Vertebrate Paleontology 13(3, suppl.):61A [A. Behrensmeyer/A. Behrensmeyer/M. Carrano]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 22691: authorized by Anna Behrensmeyer, entered by Anna Behrensmeyer on 29.05.2001, edited by Matthew Carrano and Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Pachycephalosauridae
Pachycephalosauridae indet.1 Sternberg 1945 ornithischian
 Ornithischia - Hadrosauridae
Maiasaura peeblesorum Horner and Makela 1979 hadrosaurine
adults and juveniles
 Ornithischia - Hypsilophodontidae
Hypsilophodontidae indet.1 hypsilophodontid
 Theropoda -
 Loricata -
Crocodylia indet. crocodilian
 Choristodera -
Champsosaurus sp. Cope 1876 choristodere
 Testudinata -
Testudinata indet.2 Oppel 1811 turtle