5 km northwest of Marmarth (MRF) (Cretaceous of the United States)

Where: Slope County, North Dakota (46.3° N, 104.0° W: paleocoordinates 52.6° N, 77.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Hell Creek Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• upper 1/3 of formation

• bed-level stratigraphic resolution

Environment/lithology: channel lag; poorly lithified, intraclastic sandstone

• "a channel lag deposit"
• "poorly consolidated sandstone rich in clay rip-up clasts"

Size classes: macrofossils, mesofossils

Collected by T. Lyson

Collection methods: surface (in situ), mechanical,

• Marmarth Research Foundation (MRF)

Primary reference: M. C. Lamanna, H.-D. Sues, E. R. Schachner and T. R. Lyson. 2014. A New large-bodied oviraptorosaurian theropod dinosaur from the latest Cretaceous of western North America. PLoS ONE 9(3):e92022:1-16 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 154928: authorized by Matthew Carrano, entered by Matthew Carrano on 20.03.2014

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Theropoda - Caenagnathidae
Anzu wyliei
Anzu wyliei Lamanna et al. 2014 chicken from hell
MRF 319
 Ornithischia -
Ornithischia indet.
Ornithischia indet. Seeley 1888 ornithischian
"a single water-worn bone"
Actinopteri
 Lepisosteiformes - Lepisosteidae
Lepisosteidae indet.
Lepisosteidae indet. Cuvier 1825 gar
gar scales