UMNH Locality 303 (GS-ENM) (Cretaceous of the United States)

Also known as The Blues

Where: Kane County, Utah (37.6° N, 111.9° W: paleocoordinates 45.6° N, 83.0° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Kaiparowits Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

• Collected from around 400 m above the base of the formation, well within the middle unit, and approximately 20 m below a bentonite bed dated to 75.02 +- 0.15 Ma

• bed-level stratigraphic resolution

Environment/lithology: dry floodplain; fine-grained, intraclastic sandstone and silty mudstone

• Grain size increases in the bone bearing horizon from a predominantly clay-sized mudstone that forms the upper and lower bound of the bone-horizon to a layer rich in sand and silt sized clasts surrounding the fossils

Size classes: macrofossils, mesofossils

Preservation: trace

Collected in 2002

Collection methods: surface (float), surface (in situ), mechanical,

Primary reference: C. A. Boyd, S. K. Drumheller, and T. A. Gates. 2013. Crocodyliform feeding traces on juvenile ornithischian dinosaurs from the Upper Cretaceous (Campanian) Kaiparowits Formation, Utah. PLoS ONE 8(2):e57605:1-8 [P. Mannion/P. Mannion/M. Carrano]more details

Purpose of describing collection: taphonomic analysis

PaleoDB collection 140241: authorized by Philip Mannion, entered by Philip Mannion on 05.03.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Neornithischia - Hypsilophodontidae
"Hypsilophodontidae" indet. Dollo 1882 hypsilophodontid
UMNH VP 21104 and 21107 - remains of at least three juvenile ‘hypsilophodontid’ ornithopods
 Loricata -
Crocodyliformes indet. crocodilian
Partial tooth embedded in hypsilophodontid femur, plus bite marks on bones