UCM 84157 (Cretaceous of the United States)

Where: Garfield County, Utah (38.1° N, 110.9° W: paleocoordinates 45.9° N, 81.8° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Middle Member (Masuk Formation), Early/Lower Campanian (83.5 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: fluvial; mudstone and carbonaceous shale

• "the middle member of the Masuk Formation [was] deposited in a meander-belt system with point bar, levee, crevasse splay, and overbank deposits"
• "It shows a marked decrease in sandstone compared to the lower member and is dominated by drab mudstones and carbonaceous shales"

Size class: mesofossils

Collected by J. G. Eaton

Primary reference: J. G. Eaton. 1990. Stratigraphic revision of Campanian (Upper Cretaceous) rocks in the Henry Basin, Utah. The Mountain Geologist 27(1):27-38 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 167502: authorized by Matthew Carrano, entered by Matthew Carrano on 19.03.2015

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Hadrosauridae
Hadrosauridae indet. Cope 1869 hadrosaurid
tooth partial
Chondrichthyes
 Hybodontiformes - Hybodontidae
Hybodus sp. Agassiz 1834 elasmobranch
tooth
 Hybodontiformes - Lonchidiidae
Lonchidion sp. Estes 1964 elasmobranch
tooth partial
 Chimaeriformes - Chimaeridae
Chimaeridae indet. chimaera
teeth